CN105406732A - Intelligent temperature-controlled rectifier cabinet system - Google Patents
Intelligent temperature-controlled rectifier cabinet system Download PDFInfo
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- CN105406732A CN105406732A CN201510850153.XA CN201510850153A CN105406732A CN 105406732 A CN105406732 A CN 105406732A CN 201510850153 A CN201510850153 A CN 201510850153A CN 105406732 A CN105406732 A CN 105406732A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims description 53
- 238000001816 cooling Methods 0.000 claims description 52
- 230000017525 heat dissipation Effects 0.000 claims description 47
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 13
- 238000000746 purification Methods 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- HLLSOEKIMZEGFV-UHFFFAOYSA-N 4-(dibutylsulfamoyl)benzoic acid Chemical compound CCCCN(CCCC)S(=O)(=O)C1=CC=C(C(O)=O)C=C1 HLLSOEKIMZEGFV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to an intelligent temperature-controlled rectifier cabinet system, and belongs to the field of rectifying equipment. The intelligent temperature-controlled rectifier cabinet system comprises a temperature control unit, a rectifier unit, a heat exchanger unit, a heat exchanger, a pure water purifying unit and a detection control unit, wherein the rectifier unit and the heat exchanger unit are connected with the temperature control unit respectively; various electric elements of the detection control unit are connected with a PLC respectively; a set value is input into the PLC through a keyboard and is stored in a memory; a temperature sensor transmits a detection value to the PLC and displays the detection value on a display; and the PLC reads the set value and compares the set value with the detection value, and controls an electromagnetic valve to open and close according to the comparison result. The temperatures of various diodes are respectively adjusted, so that accurate control on the equipment is facilitated; the service lifetime of a rectifier cabinet can be relatively long and can be different along with the difference between the diodes; various positions of the device can be effectively utilized due to the design of the device; the intelligent temperature-controlled rectifier cabinet system is simple in structure and convenient to use and produce; and the service lifetime of the equipment can be effectively prolonged.
Description
Technical field
The present invention relates to a kind of intelligent temperature control rectifier cabinet system, belong to rectifying installation field.
Background technology
Rectifier cabinet adopts cophase counter parallel connection three-phase bridge rectifier circuit structure.Its general principle: two identical three-phase bridge rectification connections, identical by phase sequence from structure, phase 180 degree and just, negative direct current row is only arranged together, form from secondary winding the configuration close as far as possible until two of rectifier arm groups of opposite polarities go between, its electric current passed through is at all equal and opposite in directions of any moment, direction is contrary, make the mechanism that the alternating flux produced separately is cancelled out each other in the outside of two inverse also conductors, thus greatly reduce each several part line reactance, and increase the symmetry of phase to phase impedance, basically solve the housing local overheating caused by alternating flux of big current, reactance pressure drop increases, parallel element current-sharing declines, the specific questions such as loss increase, be conducive to improving unit efficiency and power factor.Rectification circuit utilizes the unilateral conduction of diode that the alternating voltage of positive and negative change is become the circuit of unidirectional pulsating voltage.Under the effect of AC power, rectifier diode is conducting and cut-off periodically, makes load obtain Rectified alternating current.The kind of heat exchanger is more, particle coagulation type heat exchanger is comprised according to purpose classification, particle coagulation type heat exchanger is used for the heat in absorption fluids, makes the steam heat release in air-flow condense into droplet and on the fin being adsorbed on heat exchanger and coiled pipe, is usually used in the middle of flue gas treating process.But containing sour gas such as more sulfur dioxide in flue gas, the water-soluble rear droplet forming acidity of sour gas, acid droplet can corrode equipment, reduces the useful life of equipment.Particle coagulation type heat exchanger can remove the acid droplet in flue gas, but acid droplet is dropped in below after being adsorbed on coiled pipe and fin easily splashes, cause reentrainment, not only reduce the filtration result of particle coagulation type heat exchanger, also can reduce the useful life of surrounding devices.Based on this, collecting acid drop becomes problem demanding prompt solution.。
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of intelligent temperature control rectifier cabinet system is provided, by the action of each electromagnetically operated valve in the accurate control appliance of PLC, in effective adjustment heat exchanger and rectifier cabinet pure water everywhere or cooling water flow or control the heating power of electric heater, effectively can control the temperature of rectifying installation, effective prolongation also ensures that the temperature of rectifier cabinet is very fixed, ensure the normal use of rectifier cabinet, in addition, the individual difference of each diode when effectively can ensure diode not because producing to the adjustment of the pure water amount of turnover diode, make individual diode temperature too high, conventional water circulation cooling cannot carry out temperature control respectively for the diode of these differences, affect life-span and the use safety of diode and rectifier cabinet.
The technical solution used in the present invention is as follows:
The invention discloses a kind of intelligent temperature control rectifier cabinet system, comprising:
Temperature conditioning unit, comprises temperature controller, and this temperature controller comprises PLC, communicator, memory, display, keyboard;
Rectification unit, comprises rectifier cabinet body, and this rectifier cabinet body has the diode of some composition rectifier circuits and the cabinet for fixing diode; The inside of diode has pure water passage, and pure water is by this pure water passage and lower the temperature to this diode;
Heat exchanger unit, comprise heat exchanger, heat exchanger comprises radiating tube, cooling water pipe and some square heat exchanger tubes side by side, cross cooling chamber, heating chamber and heat dissipation cavity is provided with in heat exchanger tube, another diagonal angle place that heating chamber is positioned at the pair of horns place of cooling chamber outside, heat dissipation cavity is located at but outside, chamber, the both sides of heat dissipation cavity connect import and the outlet of radiating tube respectively, and the two ends of cooling chamber connect import and the outlet of cooling water pipe respectively, in heating chamber, be provided with electric heater, this electric heater is connected with PLC; The import department of cooling water pipe is provided with water intaking valve and circulating water pump;
Purification of water unit, comprises Pure water purification device, and this Pure water purification device adopts industrial pure water Preparation equipment to make the output output conductance rate of this pure water equipment be less than 4.5 μ s/cm;
Detection control unit, comprise the temperature sensor in the exit being separately positioned on cooling chamber exit and heat dissipation cavity, be separately positioned on the electromagnetically operated valve of the porch of cooling chamber porch and heat dissipation cavity, be separately positioned on the temperature sensor on diode, be separately positioned on the electromagnetically operated valve at the pure water feeder connection place of diode; Each electric component of detection control unit is connected with PLC respectively;
In PLC, input set point by keyboard, set point storing and setting value is in memory, and temperature sensor sends detected value and is shown on display to PLC, and PLC reads set point and also compares with detected value, and PLC is according to the opening and closing of comparative result Controlling solenoid valve.
Due to said system, this system is by the action of each electromagnetically operated valve in the accurate control appliance of PLC, in effective adjustment heat exchanger and rectifier cabinet pure water everywhere or cooling water flow or control the heating power of electric heater, effectively can control the temperature of rectifying installation, effective prolongation also ensures that the temperature of rectifier cabinet is very fixed, ensure the normal use of rectifier cabinet, in addition, the individual difference of each diode when effectively can ensure diode not because producing to the adjustment of the pure water amount of turnover diode, make individual diode temperature too high, conventional water circulation cooling cannot carry out temperature control respectively for the diode of these differences, affect life-span and the use safety of diode and rectifier cabinet, its method controlled separately is simple, there is extremely strong promotional value and use value, the average life of rectifier cabinet improves 5-8%.
Further, the temperature control method of this system is:
Step 1: start heat exchanger and rectifier cabinet, the pure water flow that PLC controls diode place is 0.6L/s; It is 1.2L/s that PLC controls porch, controlled cooling model chamber cooling water flow, and heat dissipation cavity porch pure water flow is 0.45L/s, and the gross power of electric heater is 0W;
Step 2: after heat exchanger, rectifier cabinet and Pure water purification device stable operation 5min; PLC detects diode temperature; when its temperature is lower than 21 DEG C; the pure water flow at PLC control diode place is 0.55L/s, cooling chamber porch cooling water flow is 1.2L/s, heat dissipation cavity porch pure water flow is 0.38L/s, and the gross power of electric heater is 500W; When PLC detects that the temperature of diode is 21-30 DEG C, the pure water flow at PLC control diode place is 0.87L/s, cooling chamber porch cooling water flow is 1.5L/s, heat dissipation cavity porch pure water flow is 0.48L/s, and the gross power of electric heater is 150W; When PLC detects that the temperature of diode is 30-40 DEG C, the pure water flow at PLC control diode place is 1.3L/s, cooling chamber porch cooling water flow is 2L/s, heat dissipation cavity porch pure water flow is 0.83L/s, and the gross power of electric heater is 0W; When PLC detects the temperature of diode higher than 40 DEG C, the pure water flow at PLC control diode place is 1.5L/s, cooling chamber porch cooling water flow is 2.5L/s, heat dissipation cavity porch pure water flow is 1.1L/s, and the gross power of electric heater is 0W;
Step 3:PLC detects cooling chamber exit cooling water temperature and heat dissipation cavity exit pure water temperature, when cooling water temperature lower than 5 DEG C or pure water temperature lower than 12 DEG C time, the gross power that PLC controls electric heater is that porch, 1000W, PLC controlled cooling model chamber cooling water flow is 1.5L/s, heat dissipation cavity porch pure water flow is 0.5L/s; When cooling water temperature is 5-15 DEG C or pure water temperature is 12-20 DEG C, the gross power that PLC controls electric heater is that porch, 550W, PLC controlled cooling model chamber cooling water flow is 1.9L/s, heat dissipation cavity porch pure water flow is 0.8L/s; When cooling water temperature higher than 15 DEG C or pure water temperature higher than 20 DEG C time, the gross power that PLC controls electric heater is that porch, 0W, PLC controlled cooling model chamber cooling water flow is 1.0L/s, heat dissipation cavity porch pure water flow is 0.4L/s;
When the required action performed of step 4:PLC detection diode temperature conflicts with detection cooling chamber exit cooling water temperature and the required action performed of heat dissipation cavity exit pure water temperature, preferentially perform the former action.
Owing to have employed said method, temperature detection and flow control is carried out respectively for each diode, the temperature of effective each diode of guarantee reaches rational rectification temperature, the temperature difference opposite sex of diode is effectively eliminated in the normal use of guarantee equipment, the temperature of accurate each diode of control, ensure the useful life of rectifier cabinet, in addition, the heat exchanger tube of heat exchanger carries out temperature control and flow control, improve the efficiency of heat exchange, avoid the waste of resource, avoid equipment local temperature difference excessive and reduce useful life of equipment, effective utilization of equipment can be ensured, Based Intelligent Control is carried out to this controller, effectively can improve the heat exchange efficiency of this heat transmission equipment.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, the rectifier cabinet of this device controls respectively to each diode for rectification, the ease for use of guarantee equipment, prevent the temperature contrast that the individual difference of diode causes, make the temperature equalization of each diode, improve fail safe and the useful life of rectifier cabinet, effectively reduce the impact of diode individual difference on rectifier cabinet.
2, its structure simple, use and convenient for production, can effectively to improve be the production efficiency of equipment, the design of its heater can heat exchanger refrigeration, effectively can prevent the interior medium of equipment from freezing, improve the winter resistance of equipment.
3, the structure of heat exchanger is improved, effectively can improve heat exchange efficiency, and the design of this device effectively can utilize each position of device, effectively can prevent the waste of heat exchanger cavity, the flow 10-20% of turnover heat exchanger can be improved.
Accompanying drawing explanation
Fig. 1 is heat exchanger structure figure in the present invention;
Mark in figure: 1-radiating tube, 2-cooling water pipe, 3-cooling chamber, 4-heat dissipation cavity, 5-heating chamber.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
specific embodiment 1:
A kind of intelligent temperature control rectifier cabinet system of the present invention, comprising:
Temperature conditioning unit, comprises temperature controller, and this temperature controller comprises PLC, communicator, memory, display, keyboard;
Rectification unit, comprises rectifier cabinet body, and this rectifier cabinet body has the diode of some composition rectifier circuits and the cabinet for fixing diode; The inside of diode has pure water passage, and pure water is by this pure water passage and lower the temperature to this diode;
Heat exchanger unit, comprise heat exchanger, heat exchanger comprises radiating tube 1, cooling water pipe 2 and some square heat exchanger tubes side by side, cross cooling chamber 3, heating chamber 5 and heat dissipation cavity 4 is provided with in heat exchanger tube, another diagonal angle place that heating chamber 5 is positioned at the pair of horns place of cooling chamber 3 outside, heat dissipation cavity 4 is located at but outside, chamber, the both sides of heat dissipation cavity 4 connect import and the outlet of radiating tube 1 respectively, the two ends of cooling chamber 3 connect import and the outlet of cooling water pipe 2 respectively, in heating chamber 5, be provided with electric heater, this electric heater is connected with PLC; The import department of cooling water pipe 2 is provided with water intaking valve and circulating water pump; Cooling chamber 3 is cross, another diagonal angle place that heating chamber 5 is positioned at the pair of horns place of cooling chamber 3 outside, heat dissipation cavity 4 is located at but outside, chamber, the both sides of heat dissipation cavity 4 connect import and the outlet of radiating tube 1 respectively, and the two ends of cooling chamber 3 connect import and the outlet of cooling water pipe 2 respectively;
Purification of water unit, comprises Pure water purification device, and this Pure water purification device adopts industrial pure water Preparation equipment to make the output output conductance rate of this pure water equipment be less than 4.5 μ s/cm;
Detection control unit, comprise the temperature sensor in the exit being separately positioned on cooling chamber 3 exit and heat dissipation cavity 4, be separately positioned on the electromagnetically operated valve of the porch of cooling chamber 3 porch and heat dissipation cavity 4, be separately positioned on the temperature sensor on diode, be separately positioned on the electromagnetically operated valve at the pure water feeder connection place of diode; Each electric component of detection control unit is connected with PLC respectively;
In PLC, input set point by keyboard, set point storing and setting value is in memory, and temperature sensor sends detected value and is shown on display to PLC, and PLC reads set point and also compares with detected value, and PLC is according to the opening and closing of comparative result Controlling solenoid valve.
Due to said system, this system is by the action of each electromagnetically operated valve in the accurate control appliance of PLC, in effective adjustment heat exchanger and rectifier cabinet pure water everywhere or cooling water flow or control the heating power of electric heater, effectively can control the temperature of rectifying installation, effective prolongation also ensures that the temperature of rectifier cabinet is very fixed, ensure the normal use of rectifier cabinet, in addition, the individual difference of each diode when effectively can ensure diode not because producing to the adjustment of the pure water amount of turnover diode, make individual diode temperature too high, conventional water circulation cooling cannot carry out temperature control respectively for the diode of these differences, affect life-span and the use safety of diode and rectifier cabinet, its method controlled separately is simple, there is extremely strong promotional value and use value, the average life of rectifier cabinet improves 5-8%.
specific embodiment 2:
Temperature control method according to the intelligent temperature control rectifier cabinet system of embodiment 1 is:
Step 1: start heat exchanger and rectifier cabinet, the pure water flow that PLC controls diode place is 0.6L/s; It is 1.2L/s that PLC controls porch, controlled cooling model chamber 3 cooling water flow, and heat dissipation cavity 4 porch pure water flow is 0.45L/s, and the gross power of electric heater is 0W;
Step 2: after heat exchanger, rectifier cabinet and Pure water purification device stable operation 5min; PLC detects diode temperature; when its temperature is lower than 21 DEG C; the pure water flow at PLC control diode place is 0.55L/s, cooling chamber 3 porch cooling water flow is 1.2L/s, heat dissipation cavity 4 porch pure water flow is 0.38L/s, and the gross power of electric heater is 500W; When PLC detects that the temperature of diode is 21-30 DEG C, the pure water flow at PLC control diode place is 0.87L/s, cooling chamber 3 porch cooling water flow is 1.5L/s, heat dissipation cavity 4 porch pure water flow is 0.48L/s, and the gross power of electric heater is 150W; When PLC detects that the temperature of diode is 30-40 DEG C, the pure water flow at PLC control diode place is 1.3L/s, cooling chamber 3 porch cooling water flow is 2L/s, heat dissipation cavity 4 porch pure water flow is 0.83L/s, and the gross power of electric heater is 0W; When PLC detects the temperature of diode higher than 40 DEG C, the pure water flow at PLC control diode place is 1.5L/s, cooling chamber 3 porch cooling water flow is 2.5L/s, heat dissipation cavity 4 porch pure water flow is 1.1L/s, and the gross power of electric heater is 0W;
Step 3:PLC detects cooling chamber 3 exit cooling water temperature and heat dissipation cavity 4 exit pure water temperature, when cooling water temperature lower than 5 DEG C or pure water temperature lower than 12 DEG C time, the gross power that PLC controls electric heater is that porch, 1000W, PLC controlled cooling model chamber 3 cooling water flow is 1.5L/s, heat dissipation cavity 4 porch pure water flow is 0.5L/s; When cooling water temperature is 5-15 DEG C or pure water temperature is 12-20 DEG C, the gross power that PLC controls electric heater is that porch, 550W, PLC controlled cooling model chamber 3 cooling water flow is 1.9L/s, heat dissipation cavity 4 porch pure water flow is 0.8L/s; When cooling water temperature higher than 15 DEG C or pure water temperature higher than 20 DEG C time, the gross power that PLC controls electric heater is that porch, 0W, PLC controlled cooling model chamber 3 cooling water flow is 1.0L/s, heat dissipation cavity 4 porch pure water flow is 0.4L/s;
When the required action performed of step 4:PLC detection diode temperature conflicts with detection cooling chamber 3 exit cooling water temperature and the required action performed of heat dissipation cavity 4 exit pure water temperature, preferentially perform the former action; That is: when PLC controls the action of each electric component and detection, priority acccess control regulates the temperature of diode, and the temperature controlling heat exchanger subsequently again regulates.
Owing to have employed said method, temperature detection and flow control is carried out respectively for each diode, the temperature of effective each diode of guarantee reaches rational rectification temperature, the temperature difference opposite sex of diode is effectively eliminated in the normal use of guarantee equipment, the temperature of accurate each diode of control, ensure the useful life of rectifier cabinet, in addition, the heat exchanger tube of heat exchanger carries out temperature control and flow control, improve the efficiency of heat exchange, avoid the waste of resource, avoid equipment local temperature difference excessive and reduce useful life of equipment, effective utilization of equipment can be ensured, Based Intelligent Control is carried out to this controller, effectively can improve the heat exchange efficiency of this heat transmission equipment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. an intelligent temperature control rectifier cabinet system, is characterized in that, comprising:
Temperature conditioning unit, comprises temperature controller, and this temperature controller comprises PLC, communicator, memory, display, keyboard;
Rectification unit, comprises rectifier cabinet body, and this rectifier cabinet body has the diode of some composition rectifier circuits and the cabinet for fixing diode; The inside of diode has pure water passage, and pure water is by this pure water passage and lower the temperature to this diode;
Heat exchanger unit, comprise heat exchanger, heat exchanger comprises radiating tube, cooling water pipe and some square heat exchanger tubes side by side, cross cooling chamber, heating chamber and heat dissipation cavity is provided with in heat exchanger tube, another diagonal angle place that heating chamber is positioned at the pair of horns place of cooling chamber outside, heat dissipation cavity is located at but outside, chamber, the both sides of heat dissipation cavity connect import and the outlet of radiating tube respectively, and the two ends of cooling chamber connect import and the outlet of cooling water pipe respectively, in heating chamber, be provided with electric heater, this electric heater is connected with PLC; The import department of cooling water pipe is provided with water intaking valve and circulating water pump;
Purification of water unit, comprises Pure water purification device, and this Pure water purification device adopts industrial pure water Preparation equipment to make the output output conductance rate of this pure water equipment be less than 4.5 μ s/cm;
Detection control unit, comprise the temperature sensor in the exit being separately positioned on cooling chamber exit and heat dissipation cavity, be separately positioned on the electromagnetically operated valve of the porch of cooling chamber porch and heat dissipation cavity, be separately positioned on the temperature sensor on diode, be separately positioned on the electromagnetically operated valve at the pure water feeder connection place of diode; Each electric component of detection control unit is connected with PLC respectively;
In PLC, input set point by keyboard, set point storing and setting value is in memory, and temperature sensor sends detected value and is shown on display to PLC, and PLC reads set point and also compares with detected value, and PLC is according to the opening and closing of comparative result Controlling solenoid valve.
2. intelligent temperature control rectifier cabinet system according to claim 1, it is characterized in that, its temperature control method is:
Step 1: start heat exchanger and rectifier cabinet, the pure water flow that PLC controls diode place is 0.6L/s; It is 1.2L/s that PLC controls porch, controlled cooling model chamber cooling water flow, and heat dissipation cavity porch pure water flow is 0.45L/s, and the gross power of electric heater is 0W;
Step 2: after heat exchanger, rectifier cabinet and Pure water purification device stable operation 5min; PLC detects diode temperature; when its temperature is lower than 21 DEG C; the pure water flow at PLC control diode place is 0.55L/s, cooling chamber porch cooling water flow is 1.2L/s, heat dissipation cavity porch pure water flow is 0.38L/s, and the gross power of electric heater is 500W; When PLC detects that the temperature of diode is 21-30 DEG C, the pure water flow at PLC control diode place is 0.87L/s, cooling chamber porch cooling water flow is 1.5L/s, heat dissipation cavity porch pure water flow is 0.48L/s, and the gross power of electric heater is 150W; When PLC detects that the temperature of diode is 30-40 DEG C, the pure water flow at PLC control diode place is 1.3L/s, cooling chamber porch cooling water flow is 2L/s, heat dissipation cavity porch pure water flow is 0.83L/s, and the gross power of electric heater is 0W; When PLC detects the temperature of diode higher than 40 DEG C, the pure water flow at PLC control diode place is 1.5L/s, cooling chamber porch cooling water flow is 2.5L/s, heat dissipation cavity porch pure water flow is 1.1L/s, and the gross power of electric heater is 0W;
Step 3:PLC detects cooling chamber exit cooling water temperature and heat dissipation cavity exit pure water temperature, when cooling water temperature lower than 5 DEG C or pure water temperature lower than 12 DEG C time, the gross power that PLC controls electric heater is that porch, 1000W, PLC controlled cooling model chamber cooling water flow is 1.5L/s, heat dissipation cavity porch pure water flow is 0.5L/s; When cooling water temperature is 5-15 DEG C or pure water temperature is 12-20 DEG C, the gross power that PLC controls electric heater is that porch, 550W, PLC controlled cooling model chamber cooling water flow is 1.9L/s, heat dissipation cavity porch pure water flow is 0.8L/s; When cooling water temperature higher than 15 DEG C or pure water temperature higher than 20 DEG C time, the gross power that PLC controls electric heater is that porch, 0W, PLC controlled cooling model chamber cooling water flow is 1.0L/s, heat dissipation cavity porch pure water flow is 0.4L/s;
When the required action performed of step 4:PLC detection diode temperature conflicts with detection cooling chamber exit cooling water temperature and the required action performed of heat dissipation cavity exit pure water temperature, preferentially perform the former action.
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| CN201510850153.XA CN105406732B (en) | 2015-11-30 | 2015-11-30 | A kind of intelligent temperature control rectifier cabinet system |
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| CN104197562A (en) * | 2014-07-30 | 2014-12-10 | 国家电网公司 | Transformer substation secondary device arrangement system and method based on terrestrial heat source temperature control mode |
| CN204593556U (en) * | 2015-05-04 | 2015-08-26 | 国网冀北节能服务有限公司 | A kind of electrical heating system with remote temperature regulation device |
| CN105066727A (en) * | 2015-07-31 | 2015-11-18 | 中国华电工程(集团)有限公司 | Heat exchanger for particle coagulation |
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| CN105406732B (en) | 2018-06-26 |
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