CN212403514U - Sea water desalting device - Google Patents
Sea water desalting device Download PDFInfo
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- CN212403514U CN212403514U CN202020449669.XU CN202020449669U CN212403514U CN 212403514 U CN212403514 U CN 212403514U CN 202020449669 U CN202020449669 U CN 202020449669U CN 212403514 U CN212403514 U CN 212403514U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a seawater desalination device, which comprises an evaporator, a liquid level buffer container, a controller, an upper computer, a liquid level transmitter, a turning plate liquid level meter and a liquid level sensor for collecting liquid level data of the turning plate liquid level meter; the upper part and the lower part of the liquid level buffer container are respectively communicated with the last effect of the evaporator, and the bottom of the liquid level buffer container is communicated with a water outlet of the evaporator; the turning plate liquid level meter is communicated with the liquid level buffer container; the liquid level sensor is arranged on the turning plate liquid level meter; the liquid level sensor is electrically connected with the liquid level transmitter, the liquid level transmitter is electrically connected with the controller, and the controller is electrically connected with the upper computer. Can accurately monitor the liquid level of strong brine in the seawater desalination main body evaporator.
Description
Technical Field
The utility model relates to a sea water desalination technical field especially relates to a sea water desalination device.
Background
The technological process of hot sea water desalination in coastal steel plant includes conveying sea water to the main sea water desalting evaporator with the sea water replenishing water pump, heat exchange evaporation of sea water with the steam entering the evaporator in the environment, cooling the steam entering the next effect and the sea water to produce distilled water, and conveying the distilled water to the main steel plant. In the production flow of seawater desalination, the strong brine liquid level in the evaporator is too high or too low, which can cause adverse effects on the production stability and safety and the safety of main process equipment, so that a device capable of accurately monitoring the strong brine liquid level in the seawater desalination main body evaporator is urgently needed at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application can accurately monitor the liquid level of the strong brine in the seawater desalination main body evaporator by providing the seawater desalination device.
The application provides the following technical scheme through an embodiment of the application:
a seawater desalination device comprises an evaporator, a liquid level buffer container, a controller, an upper computer, a liquid level transmitter, a flap liquid level meter and a liquid level sensor for collecting liquid level data of the flap liquid level meter; wherein the content of the first and second substances,
the upper part and the lower part of the liquid level buffer container are respectively communicated with the last effect of the evaporator, and the bottom of the liquid level buffer container is communicated with a water outlet of the evaporator;
the turning plate liquid level meter is communicated with the liquid level buffer container;
the liquid level sensor is arranged on the turning plate liquid level meter;
the liquid level sensor is electrically connected with the liquid level transmitter, the liquid level transmitter is electrically connected with the controller, and the controller is electrically connected with the upper computer.
Optionally, a high liquid level switch and a low liquid level switch are arranged inside the liquid level buffer container, and the high liquid level switch and the low liquid level switch are respectively electrically connected with the controller.
Optionally, the evaporator is further connected to a water replenishing pump for replenishing seawater and a drain pump for draining strong brine, and the water replenishing pump and the drain pump are electrically connected to the controller respectively.
Optionally, the controller is electrically connected to the upper computer through a switch.
Optionally, the upper computer includes an alarm device, and the alarm device is electrically connected to the controller.
Optionally, the upper part of the flap liquid level meter is communicated with the upper part of the liquid level buffer container through a first ball valve, and the lower part of the flap liquid level meter is communicated with the lower part of the liquid level buffer container through a second ball valve.
Optionally, a sewage drainage plug is installed at the bottom of the flap liquid level meter.
Optionally, the upper portion of the liquid level buffer container is communicated with the last effect of the evaporator through a first connecting flange, the lower portion of the liquid level buffer container is communicated with the last effect of the evaporator through a second connecting flange, and the bottom of the liquid level buffer container is communicated with the water outlet of the evaporator through a third connecting flange.
Optionally, the liquid level buffer container, the inner wall of the flap level gauge and the float are made of stainless steel.
Optionally, the liquid level sensor is a tubular magnetic induction liquid level sensor.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the utility model discloses a sea water desalination device in one or more embodiments, through adding liquid level buffer container at the last effect of original evaporimeter, the upper and lower part of liquid level buffer container respectively with the last effect intercommunication of evaporimeter, the bottom of liquid level buffer container with the outlet of evaporimeter communicates, guarantee that evaporimeter and the interior gas-liquid space pressure of liquid level buffer container are unanimous to make the strong brine liquid level in the liquid level buffer unanimous with the liquid level of evaporimeter inside; through turning over the board level gauge with liquid level buffer container intercommunication measures the liquid level in the liquid level buffer, and level sensor installs turn over on the board level gauge to gather the liquid level data that turns over the board level gauge, and through being connected liquid level transmitter with level sensor electricity and transmit the controller of being connected with liquid level transmitter electricity, the controller is given the host computer of electricity with liquid level data transmission again, in order to show the liquid level condition on the host computer. Through with the setting of the liquid level buffer tank of strong brine with the liquid level demonstration in the evaporimeter, utilize to turn over board level gauge and host computer and show the liquid level condition of liquid level buffer tank respectively, can accurate monitoring sea water desalination main part evaporimeter in strong brine liquid level.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a seawater desalination plant according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection relationship of the control system of the seawater desalination apparatus according to an embodiment of the present invention;
the reference numerals are explained below:
1. the system comprises an evaporator, 11, a first effect of the evaporator, 111, a first effect heat exchange tube bundle, 12, a last effect of the evaporator, 121, the last effect heat exchange tube bundle, 13, a water outlet, 14, a water discharge pump, 15, a liquid level regulating valve, 16, a water replenishing regulating valve, 17, a water replenishing pump, 2, a liquid level buffer container, 21, a first connecting flange, 22, a second connecting flange, 23, a third connecting flange, 24, a high liquid level switch, 25, a low liquid level switch, 3, a turning plate liquid level meter, 31, a first ball valve, 32, a second ball valve, 33, a sewage plug, 4, a liquid level sensor and 5, and a liquid level transmitter.
Detailed Description
The embodiment of the application can accurately monitor the liquid level of the strong brine in the seawater desalination main body evaporator by providing the seawater desalination device.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a seawater desalination device comprises an evaporator 1, a liquid level buffer container 2, a controller, an upper computer, a liquid level transmitter 5, a flap liquid level meter 3 and a liquid level sensor 4 for collecting liquid level data of the flap liquid level meter 3; the upper part and the lower part of the liquid level buffer container 2 are respectively communicated with the last effect of the evaporator 1, and the bottom of the liquid level buffer container 2 is communicated with a water outlet 13 of the evaporator 1; the turning plate liquid level meter 3 is communicated with the liquid level buffer container 2; the liquid level sensor 4 is arranged on the flap liquid level meter 3; the liquid level sensor 4 is electrically connected with the liquid level transmitter 5, the liquid level transmitter 5 is electrically connected with the controller, and the controller is electrically connected with the upper computer.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Also, the appearances of the phrases "in" and "out" in this document are not necessarily all referring to the same embodiment, but are to be construed broadly and encompass both forms.
In the production process of sea water desalination, the accurate measurement, regulation and control of the liquid level of the strong brine in the subject evaporator 1 are particularly important, and the stable and safe production can be ensured only when the strong brine is ensured within a set target value range, so that the evaporator 1 is reliably and accurately provided with a liquid level measuring device suitable for the field negative pressure process condition in the end effect, and the realization of the remote monitoring of the liquid level has important significance for the stable production of sea water desalination.
In order to solve the above problems, the present embodiment provides a seawater desalination device, which can accurately monitor the liquid level of the strong brine in the seawater desalination main evaporator 1.
Referring to fig. 1 and 2, the seawater desalination apparatus of the present embodiment includes an evaporator 1, a liquid level buffer container 2, a controller, an upper computer, a liquid level transmitter 5, a flap level meter 3, and a liquid level sensor 4 for collecting liquid level data of the flap level meter 3;
referring to fig. 1, the evaporator 1 includes at least a first effect 11 of the evaporator and a last effect 12 of the evaporator, and there are a first effect heat exchange tube bundle 111 and a last effect heat exchange tube bundle 121 in the first effect 11 of the evaporator and the last effect 12 of the evaporator, respectively.
Wherein the content of the first and second substances,
referring to fig. 1, the upper and lower parts of the liquid level buffer container 2 are respectively communicated with the last effect of the evaporator 1, and the bottom of the liquid level buffer container 2 is communicated with a water outlet 13 of the evaporator 1; specifically, the upper part of the liquid level buffer container 2 is communicated with the last effect of the evaporator 1 through a first connecting flange 21, the lower part of the liquid level buffer container 2 is communicated with the last effect of the evaporator 1 through a second connecting flange 22, and the bottom of the liquid level buffer container is communicated with a water outlet of the evaporator through a third connecting flange. So as to ensure that the pressure of the gas-liquid space inside the evaporator 1 is consistent with that inside the liquid level buffer container 2, thereby providing guarantee for real-time and accurate measurement of the actual liquid level of the strong brine;
the turning plate liquid level meter 3 is communicated with the liquid level buffer container 2; specifically, referring to fig. 1, the upper part of the flap liquid level meter 3 is communicated with the upper part of the liquid level buffer container 2 through a first ball valve 31, and the lower part of the flap liquid level meter 3 is communicated with the lower part of the liquid level buffer container 2 through a second ball valve 32. Guarantee that the strong brine can get into 3 level gauge main ducts of magnetism turn over board level gauge, make inside float can float at the strong brine liquid level, correctly show the liquid level on the spot.
The operating principle of the flap level gauge 3 is as follows: when the liquid level of the strong brine rises and falls, the floater in the main conduit of the flap liquid level meter 3 also rises and falls along with the strong brine, the permanent magnet in the floater is transmitted to the magnetic flap window through magnetic coupling to drive the red and white flap columns to turn over for 180 degrees, when the liquid level rises, the flap column turns from white to red, when the liquid level falls, the flap column turns from red to white, and the red and white boundary positions of the indicator are the actual height of the medium liquid level in the container, so that the liquid level is displayed on site.
As an alternative embodiment, the bottom of the flap liquid level meter 3 is provided with a sewage plug 33. The device can be combined with a connecting ball valve to realize online pollution discharge, flushing, float integrity check and the like of the liquid level meter.
The liquid level sensor 4 is arranged on the flap liquid level meter 3; specifically, level sensor 4 is tubular magnetic induction level sensor, conveniently with turn over board level gauge 3 equipment together, be used for gathering turn over board level gauge 3 liquid level data. The tubular magnetic induction liquid level sensor internal resistance material installed together with the turning plate liquid level meter 3 is influenced by the effect of the magnet magnetic field in the float, the resistance value of the resistance chain changes, the changed resistance signal is converted into 4-20 mA current signal through the liquid level transmitter 4 and is transmitted to the controller, and accurate measurement of the strong brine liquid level and remote monitoring of the upper computer on the strong brine liquid level of the field evaporator are achieved.
The liquid level sensor 4 is electrically connected with the liquid level transmitter 5, referring to fig. 2, the liquid level transmitter 5 is electrically connected with the controller, and the controller is electrically connected with the upper computer.
Since the evaporator 1 is generally in a vacuum negative pressure environment (for example, -0.096MPa), in the present embodiment, the liquid level buffer container 2 is a closed tank, and after the evaporator 1 is communicated, the tank is in a state of being communicated with the evaporator 1, and is also in a negative pressure environment, so that the concentrated brine level in the evaporator 1 is accurately displayed. The device of this embodiment, through with the setting of the liquid level buffer tank of strong brine with the liquid level demonstration in the evaporimeter 1, utilize to turn over board level gauge 3 and host computer and show the liquid level condition of liquid level buffer tank respectively, can accurate monitoring sea water desalination main part evaporimeter 1 interior strong brine liquid level.
After the realization is to the accurate detection of strong brine liquid level in the evaporimeter 1, because strong brine liquid level is too high or low can all lead to the fact adverse effect to production stability safety and main process equipment safety excessively, consequently, in order to control the liquid level, as an optional implementation mode, see fig. 1, liquid level buffer container 2 is inside to be provided with high liquid level switch 24 and low liquid level switch 25, high liquid level switch 24 with low liquid level switch 25 respectively with the controller electricity is connected. Since the evaporator 1 is further connected with a water replenishing pump 17 for replenishing seawater and a water draining pump 14 for draining strong brine, the water replenishing pump 17 and the water draining pump 14 are electrically connected with the controller respectively. When the liquid level in the liquid level buffer vessel 2 reaches a preset high level, the high level switch 24 is triggered, otherwise the low level switch 25 is triggered. Consequently, the controller is except can gathering in real time and turning over the liquid level data of board level gauge 3, can also gather high liquid level switch 24 and low liquid level switch 25's status signal, host computer remote monitoring shows can be uploaded on the one hand, adjust the strong brine liquid level and provide reliable foundation for operation personnel control, on the other hand controller is according to liquid level switch signal, when reaching high or low liquid level, control moisturizing pump 17 or 14 operating condition of drain pump, make strong brine liquid level in the evaporimeter 1 within the safety range of predetermineeing high liquid level and predetermineeing low liquid level, and then guaranteed that desalination of sea water production is stable and equipment operation safety. On the other hand, the controller can also be provided with the existing program, and the controller judges whether seawater needs to be supplied or strong brine is discharged according to the liquid level data collected by the liquid level sensor 4 and compared with the preset high liquid level and the preset low liquid level, so that the working state of the water supply pump 17 or the drain pump 14 is controlled, and the strong brine liquid level in the evaporator 1 is within the safety range of the preset high liquid level and the preset low liquid level.
Further, the liquid level data that gathers liquid level sensor 4 and the state signal combination of gathering high liquid level switch 24 and low liquid level switch 25 are judged, as long as gather liquid level sensor 4's liquid level data and high liquid level switch 24 and low liquid level switch 25's state signal simultaneously, can realize through current procedure, the collection of dual data to improve the accuracy of control. Illustratively, when the liquid level of the strong brine is more than or equal to 95% and the signal state of the high liquid level switch is transmitted in place, the controller sends a pump stopping instruction to the water replenishing pump 17 to prevent the strong brine from overflowing into the distilled water flow channel, so that the safety and stability of the production and supply of the distilled water are ensured; when the strong brine liquid level is less than or equal to 5% and the low liquid level signal state is transmitted in place, the controller sends a pump stopping instruction to the drainage pump 14 so as to ensure the safety of the pump and the motor equipment.
As an alternative embodiment, referring to fig. 2, the controller is electrically connected to the upper computer through a switch and an ethernet cable. The liquid level transmitter 5, the drainage pump 14, the water replenishing pump 17, the high liquid level switch 24 and the low liquid level switch 25 are electrically connected with the controller through the substation signal module so as to ensure that data information can be uploaded to the controller in time.
In this embodiment, the upper computer may be a PC, and has display and input functions, and as an optional implementation, the upper computer includes an alarm device, and the alarm device is electrically connected to the controller.
The alarm device can give an alarm when the controller collects the state signals of the high liquid level switch 24 and the low liquid level switch 25, and the alarm mode has various modes, such as pealing, flickering and the like.
As an alternative embodiment, in order to enhance the corrosion resistance under the corrosive environment of strong brine, the liquid level buffer container 2, the inner wall of the flap liquid level meter 3 and the float are made of stainless steel, such as 316L stainless steel.
Further, the blowdown screwed plug 33, the first ball valve 31, the second ball valve 32, the first connecting flange 21 and the connecting pipeline are all made of corrosion-resistant 316L stainless steel, so that the service life of the instrument equipment is prolonged, and the manual maintenance amount is reduced. The long-term accuracy and stability of the liquid level measurement are ensured.
Further, the controller may be a programmable PLC in this embodiment.
Referring to fig. 1, a water replenishing regulating valve may be provided on a pipeline between the water replenishing pump 17 and the evaporator 1 to regulate a water replenishing flow rate, and similarly, a liquid level regulating valve may be provided at a water outlet of the water discharging pump 14 to regulate a water discharging flow rate.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the utility model discloses a sea water desalination device in one or more embodiments, through adding liquid level buffer container 2 at original evaporimeter 1 end effect, the upper and lower part of liquid level buffer container 2 respectively with the end effect intercommunication of evaporimeter 1, the bottom of liquid level buffer container 2 with the outlet 13 of evaporimeter 1 communicates, guarantees that evaporimeter 1 and the interior gas-liquid space pressure of liquid level buffer container 2 are unanimous to make the strong brine liquid level in the liquid level buffer unanimous with the liquid level of evaporimeter 1 inside; through turning over board level gauge 3 with 2 intercommunications of liquid level buffer container, measure the liquid level in the liquid level buffer, level sensor 4 is installed turn over on the board level gauge 3 to gather the liquid level data that turns over board level gauge 3, and through the controller of being connected liquid level transmitter 5 with level sensor 4 electricity and transmitting with 5 electricity of liquid level transmitter, the controller is with the transmission of liquid level data for the host computer of electricity again, with the demonstration liquid level condition on the host computer. Through with the setting of the liquid level buffer tank of strong brine with the liquid level demonstration in the evaporimeter 1, utilize to turn over board level gauge 3 and host computer and show the liquid level condition of liquid level buffer tank respectively, can accurate monitoring sea water desalination main part evaporimeter 1 interior strong brine liquid level.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A seawater desalination device comprises an evaporator and is characterized by further comprising a liquid level buffer container, a controller, an upper computer, a liquid level transmitter, a turning plate liquid level meter and a liquid level sensor for collecting liquid level data of the turning plate liquid level meter; wherein the content of the first and second substances,
the upper part and the lower part of the liquid level buffer container are respectively communicated with the last effect of the evaporator, and the bottom of the liquid level buffer container is communicated with a water outlet of the evaporator;
the turning plate liquid level meter is communicated with the liquid level buffer container;
the liquid level sensor is arranged on the turning plate liquid level meter;
the liquid level sensor is electrically connected with the liquid level transmitter, the liquid level transmitter is electrically connected with the controller, and the controller is electrically connected with the upper computer.
2. The seawater desalination apparatus of claim 1, wherein the liquid level buffer container is internally provided with a high liquid level switch and a low liquid level switch, and the high liquid level switch and the low liquid level switch are respectively electrically connected with the controller.
3. The seawater desalination apparatus of claim 2, wherein the evaporator is further connected with a make-up pump for making up seawater and a drain pump for draining brine, and the make-up pump and the drain pump are respectively electrically connected with the controller.
4. The seawater desalination apparatus of claim 3 wherein the controller is electrically connected to the host computer through a switch.
5. The seawater desalination apparatus of claim 1, wherein the upper computer comprises an alarm device, and the alarm device is electrically connected with the controller.
6. The seawater desalination apparatus of claim 1, wherein the upper portion of the flap level gauge is communicated with the upper portion of the liquid level buffer container through a first ball valve, and the lower portion of the flap level gauge is communicated with the lower portion of the liquid level buffer container through a second ball valve.
7. The seawater desalination apparatus of claim 1, wherein a blowdown plug is installed at the bottom of the flap level gauge.
8. The seawater desalination apparatus of claim 1, wherein the upper part of the liquid level buffer container is communicated with the final effect of the evaporator through a first connecting flange, the lower part of the liquid level buffer container is communicated with the final effect of the evaporator through a second connecting flange, and the bottom of the liquid level buffer container is communicated with the water outlet of the evaporator through a third connecting flange.
9. The seawater desalination plant of any one of claims 1-8, wherein the liquid level buffer container, the inner wall of the flap level gauge and the float are made of stainless steel.
10. The seawater desalination apparatus of claim 1, wherein the liquid level sensor is a tubular magnetic induction liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449669.XU CN212403514U (en) | 2020-03-31 | 2020-03-31 | Sea water desalting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449669.XU CN212403514U (en) | 2020-03-31 | 2020-03-31 | Sea water desalting device |
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| Publication Number | Publication Date |
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| CN212403514U true CN212403514U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020449669.XU Active CN212403514U (en) | 2020-03-31 | 2020-03-31 | Sea water desalting device |
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| CN (1) | CN212403514U (en) |
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- 2020-03-31 CN CN202020449669.XU patent/CN212403514U/en active Active
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