CN103116373B - Method, device and system of controlling feeding sea water temperature - Google Patents
Method, device and system of controlling feeding sea water temperature Download PDFInfo
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- CN103116373B CN103116373B CN201310024572.9A CN201310024572A CN103116373B CN 103116373 B CN103116373 B CN 103116373B CN 201310024572 A CN201310024572 A CN 201310024572A CN 103116373 B CN103116373 B CN 103116373B
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Abstract
The invention relates to the technical field of sea water desalination, in particular to a method, a device and a system of controlling feeding sea water temperature, and is applied to realize fully automatic control of the feeding sea water temperature in a low-temperature multifunctional sea water desalination system. The method of controlling the feeding sea water temperature comprises the steps of acquiring present temperature, collected by a temperature sensor, of feeding sea water of the low-temperature multifunctional sea water desalination system; confirming a state to be executed according to the present temperature, a state i corresponding to the present temperature, and the corresponding relationship of pre-stored n states and opening degree of a control valve group; skipping to an i+1 state to conducting consecutive adjustments of the feeding sea water temperature when the present temperature is higher than first preset temperature; and skipping to an i-1 state to conduct consecutive adjustments of the feeding sea water temperature when the present temperature is lower than second preset temperature. The first preset temperature is higher than the second preset temperature. i and n are positive integers, and i is within the range of 1 to n.
Description
Technical field
The present invention relates to field of sea water desalting technology, particularly a kind of control method of charging ocean temperature, Apparatus and system.
Background technology
The high evaporation temperature that low temperature multiple-effect distillation sea water desalting technology refers to seawater is lower than the desalination technology of 70 ℃, it is characterized in that a series of evaporator series, with a certain amount of steam input, pass through evaporation and condensation repeatedly, the evaporating temperature of an effect next is all lower than an effect above, thereby obtains being multiple times than the desalination process of the distilled water of quantity of steam.
In low temperature multiple-effect distillation seawater desalination system, former seawater is after preprocessing process, heat interchanger warm, enter falling liquid film condenser and complete heat exchange, degasification process, on the one hand the steam-condensation entering in falling liquid film condenser is become to fresh water, seawater is heated again on the other hand, temperature increase, to scope of design, then enters evaporator and carries out evaporation and concentration.
The seawater that falling liquid film condenser is discharged is system feeding seawater, the temperature stabilization of controlling charging seawater for guarantee system stability, efficiently move most important.Former seawater inflow temperature is the major influence factors of charging ocean temperature fluctuation, and due under extreme operating condition (winter condition and summer condition), former temperature difference of seawater can reach 30 ℃, and the adjustable extent of the heat-exchange system of design is larger, more than one of regulated variable.Therefore the Automatic Control that, how to realize low temperature multi-effect seawater desalting system charging ocean temperature becomes those skilled in the art's urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of control method, Apparatus and system of charging ocean temperature, for realizing the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
For achieving the above object, the invention provides following technical scheme:
A control method for charging ocean temperature, comprising:
Obtain the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
According to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; When described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
Preferably, when described Current Temperatures is greater than the second design temperature, while being less than the first design temperature, continues to carry out state i corresponding to described Current Temperatures.
Preferably, when described Current Temperatures is greater than the first design temperature, after the time delay of setting, the state i+1 of jumping to regulates charging ocean temperature continuously;
When described Current Temperatures is less than the second design temperature, after the time delay of setting, the state i-1 of jumping to regulates charging ocean temperature continuously.
The present invention also provides a kind of control device of charging ocean temperature, comprising:
Obtain equipment, for obtaining the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
Opertaing device, for according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; When described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
Preferably, when described opertaing device is further used for described Current Temperatures and is greater than the second design temperature and is less than the first design temperature, continue to carry out state i corresponding to described Current Temperatures.
Preferably, when described Current Temperatures is greater than the first design temperature, after the time delay of setting, the state i+1 of jumping to regulates charging ocean temperature continuously;
When described Current Temperatures is less than the second design temperature, after the time delay of setting, the state i-1 of jumping to regulates charging ocean temperature continuously.
The present invention also provides a kind of control system of charging ocean temperature simultaneously, comprising:
Be arranged at the temperature sensor on charging seawaterline, for the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that gathers;
Regulate the operation valve group of former seawater supply water temperature;
The controller being connected with operation valve group signal with described temperature sensor respectively, for according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; When described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
Preferably, described operation valve group comprises: be arranged at the first operation valve on cold former seawaterline, be arranged at the second operation valve on pyrogen seawaterline, be arranged at the 3rd operation valve on the concentrated seawater water supply branch road of pyrogen seawaterline, be arranged at the 4th operation valve on the product water water supply branch road of pyrogen seawaterline, and be arranged at the 5th operation valve on the pipeline being communicated with forced condensation device water inlet.
In the present invention, the control method of charging ocean temperature comprises: the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that first timing acquisition temperature sensor gathers, and controller obtains the temperature of the charging seawater that temperature sensor gathers every one-period; Then according to the corresponding relation of this Current Temperatures and n the state prestoring and operation valve group aperture, determine the state that next will carry out; When Current Temperatures is greater than the first design temperature, jumps to next state and regulate continuously charging ocean temperature; When Current Temperatures is less than the second design temperature, jumps to Last status and regulate continuously charging ocean temperature; When Current Temperatures is greater than the second design temperature and is less than the first design temperature, do not carry out state transition, maintain current state and regulate continuously charging ocean temperature.So circulate, can realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
Accompanying drawing explanation
The schematic flow sheet of the control method of a kind of charging ocean temperature that Fig. 1 provides for the embodiment of the present invention;
The Organization Chart of the control system of a kind of charging ocean temperature that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is that the PID of variable valve 5 and variable valve 6 in Fig. 2 regulates schematic diagram;
The schematic diagram of the control device of a kind of charging ocean temperature that Fig. 4 provides for the embodiment of the present invention;
The schematic diagram of the control system of a kind of charging ocean temperature that Fig. 5 provides for the embodiment of the present invention.
Reference numeral:
1-concentrated seawater heat interchanger, 2-product water heat interchanger, 3-forced condensation device, 4-falling liquid film condenser,
5-the first operation valve, 6-the second operation valve, 7-the 3rd operation valve, 8-the 4th operation valve,
9-the 5th operation valve, 10-temperature sensor, 11-obtains equipment, 12-opertaing device,
13-controller, 14-operation valve group.
Embodiment
In order to realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature, the invention provides a kind of control method, Apparatus and system of charging ocean temperature, the corresponding relation of the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system gathering according to temperature sensor and n the state prestoring and operation valve group aperture, carry out the aperture of continuous adjusting control valve group, thereby realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As shown in Figure 1, the control method of the charging ocean temperature that the embodiment of the present invention provides, comprising:
Step 21, obtain the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
Step 22, according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determines the state that will carry out; When Current Temperatures T is greater than the first design temperature T
1time, the state i+1 of jumping to regulates charging ocean temperature continuously; When Current Temperatures T is less than the second design temperature T
2time, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
In embodiments of the present invention, the control method of charging ocean temperature comprises: the Current Temperatures T of the charging seawater of the low temperature multi-effect seawater desalting system that first timing acquisition temperature sensor gathers, obtains the temperature of the charging seawater that temperature sensor gathers at interval one-period; Then according to this current temperature T and state i corresponding to Current Temperatures T, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that next will carry out; When Current Temperatures T is greater than the first design temperature T
1time, the state i+1 of jumping to regulates charging ocean temperature continuously; When Current Temperatures T is less than the second design temperature T
2time, the state i-1 of jumping to regulates charging ocean temperature continuously; When Current Temperatures T is greater than the second design temperature T
2be less than the first design temperature T
1time, do not carry out state transition, maintain current state i and regulate continuously charging ocean temperature.So circulation, thus realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
During concrete enforcement, as shown in Figure 2, in the control system of charging ocean temperature, charging seawaterline is communicated with falling liquid film condenser 4 raw material seawater water delivering orifices, temperature sensor 10 is arranged on charging seawaterline, cold former seawaterline and pyrogen seawaterline are communicated with the former seawater water inlet of falling liquid film condenser 4, and pyrogen seawaterline comprises concentrated seawater water supply branch road and product water water supply branch road, the first operation valve 5 is arranged on cold former seawaterline, the second operation valve 6 is arranged on pyrogen seawaterline, the 3rd operation valve 7 is arranged on concentrated seawater water supply branch road, for regulating the hot sea water amount by concentrated seawater heat interchanger 1, the 4th operation valve 8 is arranged on product water water supply branch road, for regulating the hot sea water amount by product water heat interchanger 2, the forced condensation device 3 being communicated with falling liquid film condenser 4 steam inlets, the 5th operation valve 9 is arranged at forced condensation device 3 water inlets, wherein, the first operation valve 5, the second operation valve 6, the 4th operation valve 8 and the 5th operation valve 9 are electronic or pneumatic control valve, the 3rd operation valve 7 is electronic or pneumatic cut-off valve, and the first operation valve 5, the second operation valve 6, the 3rd operation valve 7, the 4th operation valve 8 and the 5th operation valve 9 have formed operation valve group 14.
Former seawater is divided into two strands after pre-service, one forms pyrogen seawater respectively and enters pyrogen seawaterline after strong brine heat interchanger 1 and 2 heat exchange of product water heat interchanger, another strand directly enters cold former seawaterline without the former seawater (cold former seawater) of heat interchanger, after the former sea water mixing that cold former seawaterline and pyrogen seawaterline are discharged, enter falling liquid film condenser 4 and carry out heat interchange, as charging seawater, enter in the evaporator of low temperature multi-effect seawater desalting system; Wherein, the first operation valve 5 and the second operation valve 6 are main inlet control valve, by regulating the proportioning of cold and hot former seawater, control charging ocean temperature, the setting of the 3rd operation valve 7 and the 4th operation valve 8 is in order to change the temperature of pyrogen seawater, but in the time of still can not making charging ocean temperature reach setting value when the first operation valve 5 and the second operation valve 6 arrival accommodation limit, can change the aperture of the 3rd operation valve 7 and the 4th operation valve 8, to obtain larger range of adjustment; The effect of forced condensation device 3 is the steam in condensation falling liquid film condenser 4, thereby regulates charging ocean temperature.
The control method of charging ocean temperature is specific as follows:
First, in controller, set the scan period, set the corresponding relation of n state and operation valve group aperture, set the operation valve group aperture that each state is corresponding, set the first design temperature T
1with the second design temperature T
2, the first design temperature T
1be greater than the second design temperature T
2, and the redirect condition one between set condition and redirect condition two.Wherein, redirect condition one is for being greater than the first design temperature T as Current Temperatures T
1time, and the first operation valve 5 apertures reach maximal value, to next state transition; Redirect condition two is for being less than the second design temperature T as Current Temperatures T
2time, and the first operation valve 5 apertures reach minimum value, a state transition upwards.
Next perform step 21, step 22, specifically can be referring to table 1.
Table 1
When the control system of charging ocean temperature brings into operation, all operation valves are carried out to set according to the operation valve group aperture of state 1 correspondence, according to state in table 11 pair of the first operation valve 5, the second operation valve 6, the 3rd operation valve 7, the 4th operation valve 8 and the 5th operation valve 9, carry out set; Wherein, the first operation valve 5 apertures are 0, close, and the second operation valve 6 apertures are that 100%, the three operation valve 7 is opened, and the 4th operation valve 8 apertures are that 0, the five operation valve 9 apertures are 0.
Every a scan period temperature sensor 10, gather the temperature of a charging seawater, for example, when the operation valve group Current Temperatures T that temperature sensor 10 gathers during just at executing state i, Current Temperatures T and corresponding the first operation valve 5, the second operation valve 6, the 3rd operation valve 7, the 4th operation valve 8 and the 5th operation valve 9 aperture (set) as shown in table 1 of state i that controller gathers according to temperature sensor 10.When Current Temperatures T is greater than the first design temperature T
1time, to next state transition, jump to the temperature that state i+1 regulates charging seawater continuously, when Current Temperatures T is less than the second design temperature T
2time, the state transition that makes progress, the state i-1 of jumping to regulates the temperature of charging seawater continuously; When Current Temperatures T is greater than the second design temperature T
2be less than the first design temperature T
1shi Ze rests on this state i.So circulation is carried out, and can realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
In table 1,13 pairs of the first operation valves 5 of controller and the second operation valve 6 carry out continuous single loop PID(Proportional Integral Derivative, proportion integration differentiation) regulate, as shown in Figure 3, in this PID regulating loop, controlled variable is charging ocean temperature, and manipulated variable is the aperture of the first operation valve 5 and the second operation valve 6, the action of the first operation valve 5 and the second operation valve 6 is contrary, and two valve opening sum is a fixed value.If carrying out continuous single loop PID, 13 pairs of the 5th operation valves 9 of controller regulate, controlled variable charging ocean temperature, and manipulated variable is the aperture of the 5th operation valve 9.
Preferably, when Current Temperatures T is greater than the second design temperature T
2be less than the first design temperature T
1time, continue to carry out state i corresponding to described Current Temperatures.
Preferably, when Current Temperatures T is greater than the first design temperature T
1time, through time delay of setting, after t, the state i+1 of jumping to regulates charging ocean temperature continuously; When Current Temperatures T is less than the second design temperature T
2time, through time delay of setting, after t, the state i-1 of jumping to regulates charging ocean temperature continuously.Before from a state transition to another state, there is certain t time delay, the state before carrying out redirect in t time delay.So arrange, can avoid external interference and cause the frequent movement of valve, improve control accuracy, t specifically can be summed up and be drawn by test repeatedly time delay.
As shown in Figure 4, the embodiment of the present invention also provides a kind of control device of charging ocean temperature simultaneously, comprising:
Obtain equipment 11, for obtaining the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
Opertaing device 12, for according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; And when described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
Preferably, above-mentioned opertaing device 12 is further used for being greater than the second design temperature T as Current Temperatures T
2be less than the first design temperature T
1time, maintain the state i that Current Temperatures T is corresponding.
Preferably, when Current Temperatures T is greater than the first design temperature T
1time, through time delay of setting, after t, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures T is less than the second design temperature T
2time, through time delay of setting, after t, the state i-1 of jumping to regulates charging ocean temperature continuously.Before from a state transition to another state, there is certain t time delay, the state before carrying out redirect in t time delay; So arrange, can avoid external interference and cause the frequent movement of valve, improve the control accuracy of control device, t specifically can be summed up and be drawn by test repeatedly time delay.
As shown in Fig. 2, Fig. 5, the embodiment of the present invention also provides a kind of control system of charging ocean temperature simultaneously, comprising:
Be arranged at the temperature sensor 10 on charging seawaterline, for the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that gathers;
Regulate the operation valve group 14 of former seawater supply water temperature;
The controller 13 being connected with operation valve group 14 signals with temperature sensor 10 respectively, for according to Current Temperatures T and state i corresponding to Current Temperatures T, and the corresponding relation of the n a prestoring state and operation valve group 14 apertures, determine the state that will carry out; When Current Temperatures T is greater than the first design temperature T
1time, the state i+1 of jumping to regulates charging ocean temperature continuously; When Current Temperatures T is less than the second design temperature T
2time, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
In the present embodiment, the control system of charging ocean temperature comprises: the temperature sensor of the temperature of the charging seawater of the low temperature multi-effect seawater desalting system of collection, regulate the operation valve group of former seawater supply water temperature, and the controller being connected with operation valve group signal with temperature sensor respectively, controller obtains the Current Temperatures T of the charging seawater that temperature sensor gathers every one-period; Then according to the corresponding relation of Current Temperatures T and n the state prestoring and operation valve group aperture, determine the state that next will carry out; When Current Temperatures T is greater than the first design temperature T
1time, jump to next state and regulate continuously charging ocean temperature; When Current Temperatures T is less than the second design temperature T
2time, jump to Last status and regulate continuously charging ocean temperature; When Current Temperatures T is greater than the second design temperature T
2be less than the first design temperature T
1time, do not carry out state transition, maintain current state and regulate continuously charging ocean temperature.So circulate, can realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
Preferably, operation valve group 14 comprises: be arranged at the first operation valve 5 on cold former seawaterline, be arranged at the second operation valve 6 on pyrogen seawaterline, be arranged at the 3rd operation valve 7 on the concentrated seawater water supply branch road of pyrogen seawaterline, be arranged at the 4th operation valve 8 on the product water water supply branch road of pyrogen seawaterline, and be arranged at the 5th operation valve 9 on the pipeline being communicated with forced condensation device 3 water inlets.
In sum, in the present invention, the control method of charging ocean temperature comprises: the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that first timing acquisition temperature sensor gathers, obtains the temperature of the charging seawater that temperature sensor gathers at interval one-period; Then according to the corresponding relation of this Current Temperatures and n the state prestoring and operation valve group aperture, determine the state that next will carry out; When Current Temperatures is greater than the first design temperature, jump to next state and regulate continuously charging ocean temperature, when Current Temperatures is less than the second design temperature, jumps to Last status and regulate continuously charging ocean temperature; When Current Temperatures is greater than the second design temperature and is less than the first design temperature, do not carry out state transition, maintain current state and regulate continuously charging ocean temperature.So circulate, can realize the Automatic Control of low temperature multi-effect seawater desalting system charging ocean temperature.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a control method for charging ocean temperature, is characterized in that, comprising:
Obtain the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
According to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; When described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
2. the control method of charging ocean temperature as claimed in claim 1, is characterized in that, when described Current Temperatures is greater than the second design temperature and is less than the first design temperature, continues to carry out state i corresponding to described Current Temperatures.
3. the control method of charging ocean temperature as claimed in claim 1, is characterized in that,
When described Current Temperatures is greater than the first design temperature, after the time delay of setting, the state i+1 of jumping to regulates charging ocean temperature continuously;
When described Current Temperatures is less than the second design temperature, after the time delay of setting, the state i-1 of jumping to regulates charging ocean temperature continuously.
4. a control device for charging ocean temperature, is characterized in that, comprising:
Obtain equipment, for obtaining the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that temperature sensor gathers;
Opertaing device, for according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; And when described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
5. the control device of charging ocean temperature as claimed in claim 4, is characterized in that, described opertaing device is further used for when described Current Temperatures is greater than the second design temperature and is less than the first design temperature, continues to carry out state i corresponding to described Current Temperatures.
6. the control device of charging ocean temperature as claimed in claim 4, is characterized in that,
When described Current Temperatures is greater than the first design temperature, after the time delay of setting, the state i+1 of jumping to regulates charging ocean temperature continuously;
When described Current Temperatures is less than the second design temperature, after the time delay of setting, the state i-1 of jumping to regulates charging ocean temperature continuously.
7. a control system for charging ocean temperature, is characterized in that, comprising:
Be arranged at the temperature sensor on charging seawaterline, for the Current Temperatures of the charging seawater of the low temperature multi-effect seawater desalting system that gathers;
Regulate the operation valve group of former seawater supply water temperature;
The controller being connected with operation valve group signal with described temperature sensor respectively, for according to described Current Temperatures and state i corresponding to described Current Temperatures, and the corresponding relation of the n a prestoring state and operation valve group aperture, determine the state that will carry out; When described Current Temperatures is greater than the first design temperature, the state i+1 of jumping to regulates charging ocean temperature continuously; When described Current Temperatures is less than the second design temperature, the state i-1 of jumping to regulates charging ocean temperature continuously; Wherein, the first design temperature is greater than the second design temperature; I and n are positive integer, and i ∈ (1, n).
8. the control system of charging ocean temperature as claimed in claim 7, it is characterized in that, described operation valve group comprises: be arranged at the first operation valve on cold former seawaterline, be arranged at the second operation valve on pyrogen seawaterline, be arranged at the 3rd operation valve on the concentrated seawater water supply branch road of pyrogen seawaterline, be arranged at the 4th operation valve on the product water water supply branch road of pyrogen seawaterline, and be arranged at the 5th operation valve on the pipeline being communicated with forced condensation device water inlet.
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| CN107728661B (en) * | 2017-10-26 | 2020-11-03 | 北京金控数据技术股份有限公司 | Control method, system, terminal equipment and medium for seawater desalination and water production |
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| CN100407084C (en) * | 2001-10-01 | 2008-07-30 | 安格斯公司 | Apparatus for conditioning the temperature of a fluid |
| CN100552590C (en) * | 2007-05-24 | 2009-10-21 | 中国船舶重工集团公司第七一一研究所 | Inlet regulating module of distilling sea water desalter |
| CN202512458U (en) * | 2012-04-09 | 2012-10-31 | 北京电子科技职业学院 | Water temperature control device for online DPD (Diethyl-P-Phenylenediamine) residual chlorine analyzer |
| CN102722195B (en) * | 2012-06-29 | 2014-05-28 | 江苏申久化纤有限公司 | Granulating water temperature control system and method for granulator |
| CN203241836U (en) * | 2013-01-23 | 2013-10-16 | 中国电子工程设计院 | Feed seawater temperature control system |
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