CN114873674B - Low-temperature evaporation system, method and device - Google Patents
Low-temperature evaporation system, method and device Download PDFInfo
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- CN114873674B CN114873674B CN202210569393.2A CN202210569393A CN114873674B CN 114873674 B CN114873674 B CN 114873674B CN 202210569393 A CN202210569393 A CN 202210569393A CN 114873674 B CN114873674 B CN 114873674B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The embodiment of the application provides a low-temperature evaporation system, a low-temperature evaporation method and a low-temperature evaporation device. The system comprises: the device comprises a controller, a temperature measuring device, a compressor, an evaporation device, a condensation device, a suction device and a liquid storage device. The bottom of the inner bin of the evaporation device is provided with a heating coil; the condensing device comprises an inner cylinder and an outer cylinder, the water inlet end of the sucking device is connected with the water outlet of the outer cylinder, the water outlet end of the sucking device is connected with the upper port of the outer cylinder, and the water outlet of the outer cylinder is connected with the liquid storage device; the first pipeline is provided with an expansion valve; the temperature measuring device is used for detecting the temperature of the environment where the low-temperature evaporation system is located and the temperature of elements contained in the low-temperature evaporation system according to a preset period; the controller is respectively connected with the expansion valve and the temperature measuring device in a communication way. The efficient operation of the condensing device can be realized by flexibly adjusting the throttling degree of the expansion valve while ensuring that the low-temperature evaporation system safely works in a state of low energy consumption.
Description
Technical Field
The application relates to the field of wastewater treatment, in particular to a low-temperature evaporation system, a low-temperature evaporation method and a low-temperature evaporation device.
Background
With the continuous development of economy, industrial doors are gradually increased, the scale of factories is enlarged, the wastewater discharge amount and the pollutant types are increased, and untreated wastewater is discharged into nearby water bodies to pollute the water quality. The amount and quality of industrial wastewater vary greatly depending on the product and the production process, and typical data are not suitable for being adopted and should be examined in the field. There are three disposal modes for the water used in the factory: 1. is reused after no treatment or only necessary treatment. Sometimes reused in the process to form a circulating water system; sometimes for use in other processes. A sequential water system is formed. 2. The necessary pretreatment is carried out in the factory, and the water is discharged into an urban sewage pipeline or a converging pipeline after meeting the requirement of the city on the water quality. 3. The water is treated in the factory, and the water is directly discharged after reaching the requirements of discharging water bodies or being connected into a city rainwater pipeline or irrigating farmlands.
The industrial wastewater treatment process is complex, the requirements on energy and funds are also great, and at present, enterprises adopt a low-temperature evaporation technology to treat industrial wastewater, but the adjustment of the temperature of the refrigerant is rough and immobilized. Therefore, how to conveniently and efficiently treat industrial wastewater through adjusting an expansion valve is a problem which needs to be solved by the person skilled in the art.
Disclosure of Invention
The embodiment of the application provides a low-temperature evaporation system, a method and a device, which can accurately regulate and control the temperature and flow of a refrigerant of the low-temperature evaporation system by flexibly regulating the throttling degree of an expansion valve, and realize the efficient operation of a condensing device while ensuring the safe operation of the low-temperature evaporation system in a state with lower energy consumption.
In a first aspect, an embodiment of the present application provides a cryogenic evaporation system, which may include: the device comprises a controller, a temperature measuring device, a compressor, an evaporation device, a condensing device, a suction device and a liquid storage device; the bottom of the inner bin of the evaporation device is provided with a heating coil; the condensing device comprises an inner cylinder and an outer cylinder, the inner cylinder comprises a refrigerant chamber and a condensing pipe, the input end of the condensing pipe is connected with a vapor outlet of the evaporating device, the output end of the condensing pipe is connected with a suction end of the suction device, the water inlet end of the suction device is connected with a water outlet of the outer cylinder, the water outlet end of the suction device is connected with an upper port of the outer cylinder, the water outlet of the outer cylinder is connected with the liquid storage device, and a pipeline loop from the evaporating device to the liquid storage device forms a vapor condensing system of the low-temperature evaporating system; the input end of the compressor is connected with the lower port of the refrigerant chamber, the output end of the compressor is connected with the input end of a heating coil of the evaporation device, the output end of the heating coil is connected with the input end of the refrigerant chamber through a first pipeline, the first pipeline is provided with an expansion valve, and a refrigerant heat pump system of the low-temperature evaporation system is formed by a refrigerant loop from the output end of the compressor to the input end of the compressor;
The temperature measuring device is used for detecting the temperature of the environment where the low-temperature evaporation system is located according to a preset period and the working temperature of elements contained in the low-temperature evaporation system;
the controller is respectively in communication connection with the expansion valve and the temperature measuring device and is used for controlling the throttling degree of the expansion valve so that the condensing device can work according to preset conditions.
In one possible embodiment, the cryogenic vaporization system further comprises: a touch panel;
the touch panel is in communication connection with the controller and is used for a user to select a waste liquid type and/or set parameters, wherein the waste liquid type can comprise at least one of organic waste liquid, inorganic waste liquid or mixed waste liquid, and the parameters can comprise at least one of pressure, temperature or power.
In a second aspect, an embodiment of the present application provides a method for cryogenic evaporation, where the method is applied to a cryogenic evaporation system according to the first aspect, and the method may include the following steps:
collecting the ambient temperature according to a first preset period, and determining the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature;
determining an upper temperature control limit of the low-temperature evaporation system according to performance requirements of elements contained in the low-temperature evaporation system, wherein the performance requirements of the elements can comprise a preset working temperature range of the elements;
And adjusting the throttling degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit.
In a possible implementation manner, the method of the embodiment of the present application may further include the following steps:
collecting the internal temperature of the liquid storage device according to a second preset period;
judging whether the internal temperature is lower than a temperature control lower limit;
if yes, reducing the throttling degree of the expansion valve for weakening the condensation effect;
if not, the throttle degree of the expansion valve is lifted or the current throttle degree is kept.
In another possible implementation manner, the method of the embodiment of the present application may further include the following steps:
collecting the working temperature of elements contained in the low-temperature evaporation system according to a third preset period;
judging whether the working temperature of the element exceeds the upper limit of temperature control;
if yes, the throttle degree of the expansion valve is increased, and the working temperature of elements contained in the low-temperature evaporation system is reduced;
if not, the throttle degree of the expansion valve is reduced or the current throttle degree is kept, so that the working temperature of the elements contained in the low-temperature evaporation system accords with the preset condition.
In another possible implementation manner, the method of the embodiment of the present application may further include the following steps:
Receiving a waste liquid selection instruction of a user, wherein the waste liquid selection instruction is used for representing the type of waste liquid to be treated by the low-temperature evaporation system;
determining a target temperature of the waste liquid and a temperature control mode of an expansion valve according to the waste liquid selection instruction, wherein the target temperature represents that the target liquid in the waste liquid is required to be cooled to be in a liquid state after being vaporized, and the temperature control mode can comprise a water vapor mode and/or a mixed gas mode;
and adjusting the throttling degree of the expansion valve according to the target temperature and the temperature control mode.
In another possible implementation manner, the method of the embodiment of the present application may further include the following steps:
responding to the starting of the low-temperature evaporation system, and controlling the throttling degree of the expansion valve to be a first preset value until the air pressure in the evaporation device reaches a preset pressure;
and in response to the closing of the cryogenic evaporation system, controlling the throttling degree of the expansion valve to be a second preset value until the gaseous target liquid in the condensing device is completely cooled to be in a liquid state.
In a third aspect, embodiments of the present application provide a device for cryogenic evaporation, the device may include: the acquisition module and the control module;
the acquisition module can be used for acquiring the ambient temperature according to a first preset period;
The control module can be used for determining a lower temperature control limit of the low-temperature evaporation system according to the ambient temperature, can be used for determining an upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system, and can be used for adjusting the throttling degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit, wherein the performance requirements of the elements can comprise the working temperature range of the elements.
In a possible implementation manner, the device of the embodiment of the present application may further include: the device comprises a judging module and an interaction module;
the acquisition module is also used for acquiring the internal temperature of the liquid storage device according to a second preset period;
the judging module can be used for judging whether the internal temperature is lower than a temperature control lower limit;
the control module can also be used for reducing the throttling degree of the expansion valve when the internal temperature is lower than the lower temperature control limit, and can also be used for improving the throttling degree of the expansion valve or keeping the current throttling degree when the internal temperature is not lower than the lower temperature control limit;
the acquisition module is also used for acquiring the working temperature of the elements contained in the low-temperature evaporation system according to a third preset period;
the judging module is also used for judging whether the working temperature of the element exceeds the upper limit of temperature control;
The control module is also used for improving the throttling degree of the expansion valve when the working temperature of the element exceeds the upper temperature control limit, and reducing the throttling degree of the expansion valve or keeping the current throttling degree when the working temperature of the element does not exceed the upper temperature control limit;
the interaction module can be used for receiving a waste liquid selection instruction of a user, and the waste liquid selection instruction is used for representing the type of waste liquid to be treated by the low-temperature evaporation system;
the control module is further used for determining a target temperature of the waste liquid and a temperature control mode of the expansion valve according to the waste liquid type selection instruction, and adjusting the throttling degree of the expansion valve according to the target temperature and the temperature control mode, wherein the target temperature represents that the target liquid in the waste liquid is required to be cooled to be changed into a liquid state after being gasified, and the temperature control mode can comprise a water vapor mode and/or a mixed gas mode;
the control module is further used for responding to the starting of the low-temperature evaporation system and controlling the throttling degree of the expansion valve to be a first preset value until the air pressure in the evaporation device reaches a preset pressure;
the control module can also be used for responding to the closing of the low-temperature evaporation system and controlling the throttling degree of the expansion valve to be a second preset value until the gaseous waste liquid in the condensing device is completely cooled to be liquid.
In a fourth aspect, an embodiment of the present application provides a device for low-temperature evaporation, which may include: a processor, a memory, and a bus;
the processor and the memory are connected by a bus, wherein the memory is adapted to store a set of program code and the processor is adapted to invoke the program code stored in the memory for performing the method according to the second aspect.
By implementing the embodiment of the application, the temperature and the flow of the refrigerant of the low-temperature evaporation system can be accurately regulated and controlled by flexibly regulating the throttling degree of the expansion valve, and the condensing device can still work efficiently while ensuring that the low-temperature evaporation system works safely in a state of lower energy consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a low temperature evaporation system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of another cryogenic vaporization system according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of a method for low temperature evaporation according to an embodiment of the present application;
FIG. 4 is a schematic flow chart of another method for low temperature evaporation according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a low temperature evaporation apparatus according to an embodiment of the present application;
fig. 6 is a schematic diagram of the composition of another device for low-temperature evaporation setup according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, result, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to better understand the technical scheme of the embodiment of the application, a description is first given of a low-temperature evaporation system possibly related to the embodiment of the application. Referring to fig. 1, an architecture schematic diagram of a low-temperature evaporation system according to an embodiment of the present application includes the following parts: a controller 10, a temperature measuring device 20, a compressor 30, an evaporation device 40, a condensation device 50, a suction device 60 and a liquid storage device 70.
The bottom of the inner bin of the evaporator 40 is provided with a heating coil 410, a liquid inlet a and a vapor outlet b. Wherein, inlet a connects outside feed liquor pipe, and waste liquid can get into evaporation plant 40 through feed liquor pipe from inlet a, and heating coil 410 is used for heating the waste liquid in the evaporation plant 40 for the waste liquid becomes vapor state, and the waste liquid after the vaporization flows out from vapor outlet b.
More, the evaporation device 40 may further be provided with a liquid outlet c, where the liquid outlet c is connected to an external liquid outlet pipe, and a liquid outlet valve may be disposed on the liquid outlet pipe. When the liquid outlet valve is opened, the concentrated waste liquid left after the water in the waste liquid is evaporated can flow from the liquid outlet c to the liquid outlet pipe and is output to an external recovery device through the liquid outlet pipe, so that the staff can further process or recycle the waste liquid.
The condensing unit 50 includes an inner cylinder 510 and an outer cylinder 520. The inner tube 510 is provided with a refrigerant chamber 511 and a condenser tube 512, and an input end d of the condenser tube 512 is connected to a vapor outlet b of the evaporator 40. More, the vapor obtained from the waste liquid flows through the condensing tube 512, is cooled to a liquid state, and flows out from the output end e of the condensing tube 512. The input end d and the output end e of the condensation tube 512 are not communicated with the refrigerant chamber 511, the refrigerant chamber 511 is filled with a refrigerant in advance, and the refrigerant is in contact with the outer wall of the condensation tube 512 so as to perform heat exchange.
The suction end f of the suction device 60 is connected to the output end e of the condensation duct 512, the water inlet end g of the suction device 60 is connected to the water outlet h of the outer tub 520 of the condensation device 50, and the water outlet end i of the suction device 60 is connected to the upper port j of the outer tub 520.
The liquid storage device 70 is connected to the water outlet k of the outer cylinder 520 for storing the target liquid. The target liquid is extracted from the waste liquid, and can be water, alcohol, ammonia water, etc. By heating the waste liquid at a low temperature, the target liquid is vaporized and separated from the waste liquid, and then becomes liquid after condensation by the condensing device 50.
Specifically, after the waste liquid in the evaporation device 40 boils to generate vapor of the target liquid, the vapor flows out from the vapor outlet b of the evaporation device 40, passes through the pipe to the input end d of the condensation duct 512, and enters the condensation duct 512 from the input end. The target liquid vapor is cooled and liquefied by the refrigerant in the refrigerant chamber 511 in the condensation tube 512, the liquefied target liquid flows out from the output end e of the condensation tube 512, the suction device 60 absorbs the fluid through the water inlet end g to form negative pressure at the suction end f, the target liquid can enter the suction device 60 through the suction end f of the suction device 60, then flows out from the water outlet end i and flows into the outer tube 520 through the upper port j of the outer tube 520, and finally the target liquid flows from the water outlet h of the outer tube 520 to the liquid storage device 70. Thus, the vapor condensing system of the cryogenic vaporization system is collectively formed by the vaporization device 40, the condensation device 50, the suction device 60, the liquid storage device 70, and the piping connecting therebetween.
The input terminal t of the compressor 30 is connected to the lower port m of the refrigerant chamber 511, and the output terminal n of the compressor 30 is connected to the input terminal p of the heating coil 410. The output q of the heating coil 410 is connected to the input r of the refrigerant chamber 511 via a first line L provided with an expansion valve 80.
Specifically, the compressor 30 extracts a refrigerant from the refrigerant chamber 511, and the refrigerant is output from the lower port m of the refrigerant chamber 511, reaches the input end t of the compressor 30 through a pipe, and enters the compressor through the input end t to be compressed. The compressor 30 delivers the compressed high-temperature and high-pressure refrigerant to the heating coil 410, and the high-temperature and high-pressure refrigerant is output from the output end n of the compressor 30, reaches the input end p of the heating coil 410 through a pipe, and enters the heating coil 410 through the input end p. The refrigerant of high temperature and high pressure in the heating coil 410 is outputted from the output end q of the heating coil 410, and reaches the expansion valve 80 through the first pipe L. The high-temperature and high-pressure refrigerant is depressurized by the expansion valve 80, reaches the input end r of the refrigerant chamber 511, and passes through the input end r to the refrigerant chamber 511. The refrigerant returned to the refrigerant chamber 511 absorbs the heat of the target liquid vapor in the condensing tube 512 to evaporate, and the evaporated refrigerant is returned to the compressor 30 to form a refrigerant heat pump system of the low-temperature evaporation system.
The temperature measuring device 20 is connected with each element in the low-temperature evaporation system according to the embodiment of the application, the temperature measuring device 20 can be used for measuring the temperature of each element by a temperature sensor or an infrared thermometer, and the temperature measuring device 20 can be also used for detecting the temperature of the environment where the low-temperature evaporation system is located.
The controller 10 is respectively connected with the temperature measuring device 20 and the expansion valve 80 in a communication manner, and is used for controlling the throttling degree of the expansion valve 80 to regulate the temperature and the pressure of the refrigerant flowing through the expansion valve 80, so that the condensing device 50 can work according to preset conditions. Alternatively, the controller 10 may be a Programmable Logic Controller (PLC).
Specifically, the controller 10 may be configured to: determining the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature acquired by the temperature measuring device 20; determining the upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system; the throttle degree of the expansion valve 80 is adjusted according to the lower temperature control limit and the upper temperature control limit.
In a possible implementation manner, the cryogenic evaporation system provided in the embodiment of the present application may further include a touch panel 90, where the touch panel 90 may be communicatively connected to the controller 10, for a user to select a type of waste liquid and/or set parameters. Wherein the waste liquid type can comprise at least one of organic waste liquid, inorganic waste liquid or mixed waste liquid, and the parameter can comprise at least one of pressure, temperature or power.
By adopting the low-temperature evaporation system provided by the embodiment of the application, the throttle degree of the expansion valve can be regulated more efficiently. The determination of the lower temperature limit can avoid unnecessary energy waste due to excessive cooling (indicating that the condensing device is excessively cooling the gaseous target liquid when the temperature of the target liquid collected by the liquid storage device 70 is lower than the ambient temperature, and energy waste is caused when the temperature of the collected target liquid is lower than the ambient temperature because the temperature of the collected target liquid is eventually consistent with the ambient temperature); after the upper limit of the temperature control is determined, the components of the low-temperature evaporation system can be ensured to work normally.
The method of low temperature evaporation according to the embodiment of the present application will be described in detail with reference to the steps shown in fig. 3 to 4.
Fig. 3 is a schematic flow chart of a low-temperature evaporation method according to an embodiment of the application. The method is applied to the cryogenic vaporization system in the previous embodiment. As shown in fig. 3, the method may include the steps of:
s301, collecting the ambient temperature according to a first preset period, and determining the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature.
For example, if the first preset period is set to 10 minutes, the temperature measuring device will start starting the low-temperature evaporation system, and detect the ambient temperature of the environment where the low-temperature evaporation system is located every 10 minutes. And updating the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature every 10 minutes.
The determination of the lower limit of the temperature control is favorable for the low-temperature evaporation system to efficiently finish the task of waste liquid treatment and reduce the waste of energy sources. For example, when the ambient temperature is 20 degrees celsius, if the temperature measuring device measures that the temperature of the target liquid in the liquid storage device is 18 degrees celsius, the condensing device is indicated to excessively cool the target liquid, which causes unnecessary energy waste. And then, the controller can adjust the throttling degree of the expansion valve according to the temperature of target liquid in the liquid storage device and the ambient temperature, so that the lower limit of the temperature control can be seen to have an important indication effect on the overall operation of the low-temperature evaporation system.
S302, determining the upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system.
It should be noted that the performance requirements of the above-mentioned element may include a predetermined operating temperature range of the element.
By way of example, common electronic components are generally classified by temperature of use, radiation, tamper resistance, etc. The class fractions are classified into the following 5 classes: commercial grade, industrial grade, automotive grade, military grade, aerospace grade. Commercial grade: the temperature is 0 ℃ to +70 ℃, the common and frequently-transacted type on the market, computers, mobile phones, household appliances and the like can be seen to be commercial basically, and the price is the least, the most common and practical. Industrial grade: the temperature is-40 ℃ to +85 ℃, the grade is slightly lower than that of the military industry, the price is low, and the precision is slightly poorer. Automobile industry grade: the temperature is-40 ℃ to 125 ℃, the precision components mainly used on automobiles have higher use temperature requirements and are more expensive than industrial grade. Military grade: the temperature is-55 ℃ to +150 ℃, the electronic component is mainly used in the military field of missiles, airplanes, tanks, aircraft carriers and the like, any part of the electronic component in the military is taken out, the process is advanced, the price is high, and the precision is high. Aerospace grade: the temperature is-55 ℃ to +150 ℃, the aerospace-grade components are the highest level of components, are mainly used in the aerospace fields such as rockets, spaceship, satellites and the like, have the same use temperature as the military grade, and have the function of resisting radiation and interference on the basis of the military grade.
Specifically, setting the upper temperature control limit of the cryogenic evaporation system according to the preset operating temperature range of the element contributes to the stable and safe operation of the entire cryogenic evaporation system.
S303, adjusting the throttling degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit.
In one possible embodiment, "adjusting the throttle degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit" may include the steps of:
collecting the internal temperature of the liquid storage device according to a second preset period;
judging whether the internal temperature is lower than the temperature control lower limit;
if yes, reducing the throttling degree of the expansion valve for weakening the condensation effect;
if not, the throttle degree of the expansion valve is lifted or the current throttle degree is kept.
For example, if the second preset period is 5 minutes, the temperature measuring device will start starting from the start of the low temperature evaporation system, and detect the internal temperature of the liquid storage device every 5 minutes.
Specifically, the larger the throttle degree of the expansion valve is, the smaller the opening of the expansion valve is, and the better the cooling and depressurization effects of the expansion valve on the refrigerant are, so that the stronger the cooling effect of the refrigerant in the condensing device is; on the contrary, the smaller the throttle degree of the expansion valve is, the larger the opening of the expansion valve is, and the less obvious the cooling and depressurization effects of the expansion valve on the refrigerant are, so that the weaker the cooling effect of the refrigerant in the condensing device is.
For example, if the internal temperature of the liquid storage device is lower than the lower temperature control limit, it indicates that the condensing device excessively cools the target liquid, and the cooling effect of the condensing device needs to be weakened, so that the throttling degree of the expansion valve is reduced; if the internal temperature of the liquid storage device is higher than the temperature control lower limit, the condensing device is indicated to perform proper cooling on the target liquid (so that the vaporized target liquid is completely cooled into liquid), so that the throttle degree of the expansion valve can be selectively increased (the vaporized target liquid can be further ensured to be completely cooled into liquid), and the current throttle degree of the expansion valve can be selectively maintained.
In another possible embodiment, "adjusting the throttle degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit" may further include the steps of:
collecting the working temperature of elements contained in the low-temperature evaporation system according to a third preset period;
judging whether the working temperature of the element exceeds the upper limit of temperature control;
if yes, the throttle degree of the expansion valve is increased, and the working temperature of elements contained in the low-temperature evaporation system is reduced;
if not, the throttle degree of the expansion valve is reduced or the current throttle degree is kept, so that the working temperature of the elements contained in the low-temperature evaporation system meets the preset condition.
For example, if the third preset period is 5 minutes, the temperature measuring device will start starting the low temperature evaporation system, and detect the working temperature of the components included in the low temperature evaporation system every 5 minutes.
If the working temperature of the element exceeds the upper limit of the temperature control, the internal temperature of the low-temperature evaporation system does not meet the conditions that the element works normally and stably, the temperature of the refrigerant can be reduced, and the internal temperature of the low-temperature evaporation system can be reduced through the refrigerant circulation pipeline, so that the throttling degree of the expansion valve can be increased; if the working temperature of the element is lower than the upper temperature control limit, the internal temperature of the low-temperature evaporation system is indicated to meet the condition that the element works normally and stably, so that the throttling degree of the expansion valve can be reduced (the condition that the internal temperature of the low-temperature evaporation system can enable the element to work normally and stably is further ensured), and the current throttling degree of the expansion valve can be kept.
In another possible implementation manner, the method according to the embodiment of the present application may further include the following steps:
responding to the starting of the low-temperature evaporation system, and controlling the throttling degree of the expansion valve to be a first preset value until the air pressure in the evaporation device reaches a preset pressure;
And in response to the closing of the cryogenic evaporation system, controlling the throttling degree of the expansion valve to be a second preset value until the gaseous target liquid in the condensing device is completely cooled to be in a liquid state.
When the low-temperature evaporation system is just started, the evaporation device does not have enough vapor of the target liquid, so the condensation device is to condense the vapor, so the condensation device does not need too much refrigerant (or refrigerant with lower temperature) at the moment, so the throttle degree of the expansion valve can be kept in a state of a first preset value, and the refrigerant is prevented from being excessively processed (namely the refrigerant is cooled to low temperature and low pressure). When the air pressure in the evaporation device reaches the preset pressure (and/or the preset temperature), the target liquid is fully vaporized, and the gas enters the condensing pipe of the condensing device through the pipeline, so that the throttling degree of the expansion valve can be further adjusted, and the refrigerant adjusted through the expansion valve has a good cooling effect. The adjustment process may be stepwise, gentle, and the specific adjustment mode and the first preset value may be set by the skilled person according to the actual situation, and the present application is not limited thereto.
More, when the user sends a closing instruction to the low-temperature evaporation system, because the evaporation device also has the vapor of the target liquid and the vapor to be cooled in the condensing device, in order not to damage the elements of the low-temperature evaporation device, the condensing device can continue to operate for a period of time (the period of time is set by a worker according to the actual situation) after the low-temperature evaporation system receives the closing instruction, so that the expansion valve can also continue to keep the throttling degree at a second preset value for a period of time, and then can stop operating together with the condensing device. Thus, the safety of the elements in the low-temperature evaporation system is protected, and the service life of the elements is prolonged as much as possible. The second preset value is set by a technician according to practical situations, and the application is not limited herein.
It can be seen that by adopting the embodiment of the application, the throttle degree of the expansion valve can be flexibly adjusted by comparing the actually collected temperature (such as the working temperature of each element in the low-temperature evaporation system or the internal temperature of the liquid storage device) with the preset condition (such as the upper temperature control limit or the lower temperature control limit), thereby being beneficial to realizing efficient cooling of the low-temperature evaporation system with lower energy consumption.
Fig. 4 is a schematic flow chart of another low-temperature evaporation method according to an embodiment of the application. The method is applied to a cryogenic evaporation system as shown in fig. 2, and may comprise the steps of:
s401, collecting the ambient temperature according to a first preset period, and determining the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature.
S402, determining the upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system.
S403, adjusting the throttling degree of the expansion valve according to the lower temperature control limit and the upper temperature control limit.
The specific implementation of the method steps S401 to S403 may refer to examples of the method steps S301 to S303 in fig. 3, and are not described herein.
S404, receiving a waste liquid selection instruction of a user.
It should be noted that the above waste liquid selection instruction may be used to indicate the type of waste liquid to be treated by the low temperature evaporation system.
There are three general classification methods for industrial wastewater:
the first is classified according to the chemical nature of the main pollutants contained in the industrial wastewater, the inorganic wastewater mainly containing inorganic pollutants, and the organic wastewater mainly containing organic pollutants. For example, electroplating wastewater and wastewater from mineral processing are inorganic wastewater, wastewater from food or petroleum processing is organic wastewater, mixed wastewater is produced in the printing and dyeing industry, and wastewater discharged from different industries contains different components.
The second is classified by products and objects of processing of industrial enterprises, such as metallurgical waste water, paper-making waste water, coking gas waste water, metal pickling waste water, chemical fertilizer waste water, textile printing and dyeing waste water, dye waste water, tanning waste water, pesticide waste water, power station waste water, etc.
The third is classified by the main components of the pollutants contained in the wastewater, such as acid wastewater, alkaline wastewater, cyanide-containing wastewater, chromium-containing wastewater, cadmium-containing wastewater, mercury-containing wastewater, phenol-containing wastewater, aldehyde-containing wastewater, oil-containing wastewater, sulfur-containing wastewater, organic phosphorus-containing wastewater, radioactive wastewater, etc.
The first two classifications do not relate to the main components of the contaminants contained in the wastewater nor do they indicate the harmfulness of the wastewater.
S405, determining the target temperature of the waste liquid and the temperature control mode of the expansion valve according to the waste liquid selection instruction.
The target temperature may indicate that the target liquid in the waste liquid is vaporized and then cooled to be in a liquid state.
For example, if the target temperature is 15 degrees celsius, it is indicated that the condensing device needs to provide the gasified target liquid with a temperature at least not higher than 15 degrees celsius to liquefy the gasified target liquid.
Further, the temperature control modes may include a water vapor mode and/or a mixed gas mode.
For example, the mixed gas can comprise alcohol and/or ammonia, and different target liquids can be separated and cooled according to different liquefying temperatures of different gases. For example, at normal atmospheric pressure, water has a boiling point of 100 degrees celsius, alcohol has a boiling point of 78 degrees celsius, and ammonia has a boiling point of-33.5 degrees celsius. The boiling point of the target liquid may be changed by adjusting the pressure, for example, the boiling point of ammonia gas becomes 4.5 degrees celsius at five atmospheres. The above examples of the mixed gas are only for the readers to understand the method of the embodiment of the present application, and should not limit the present application, and the specific mixed gas mode (temperature control mode) is set by the technicians according to the actual situation.
S406, adjusting the throttling degree of the expansion valve according to the target temperature and the temperature control mode.
It can be seen that the embodiment of the application can flexibly attach to different waste liquid treatment schemes by enabling a user to select different temperature control modes (or working parameters), thereby greatly improving the suitability and flexibility of a low-temperature evaporation system and various industrial waste water treatments.
The following describes an apparatus according to an embodiment of the present application with reference to the drawings.
Referring to fig. 5, a schematic composition diagram of a low-temperature evaporation device is provided in an embodiment of the present application, where the device may include: the acquisition module 510 and the control module 520;
the acquisition module 510 may be configured to acquire an ambient temperature at a first preset period;
the control module 520 may be configured to determine a lower temperature limit of the low temperature evaporation system according to an ambient temperature, determine an upper temperature limit of the low temperature evaporation system according to performance requirements of elements included in the low temperature evaporation system, and adjust a throttling degree of the expansion valve according to the lower temperature limit and the upper temperature limit. Wherein the performance requirements of the component include an operating temperature range of the component.
In one possible embodiment, the apparatus may further include: a judgment module 530;
The acquisition module 510 may be further configured to acquire an internal temperature of the liquid storage device according to a second preset period;
a judging module 530, configured to judge whether the internal temperature is lower than a lower temperature control limit;
the control module 520 may also be configured to reduce the degree of throttling of the expansion valve when the internal temperature is below the lower temperature limit, and may also be configured to raise the degree of throttling of the expansion valve or maintain the current degree of throttling when the internal temperature is not below the lower temperature limit.
In another possible embodiment, the apparatus may further include:
the collection module 510 may be further configured to collect, according to a third preset period, an operating temperature of an element included in the low-temperature evaporation system;
the judging module 530 may be further configured to judge whether the operating temperature of the element exceeds an upper temperature control limit;
the control module 520 may also be configured to increase the degree of throttling of the expansion valve when the operating temperature of the component exceeds a preset value, and may also be configured to decrease the degree of throttling of the expansion valve or maintain the current degree of throttling when the operating temperature of the component does not exceed the preset value.
In another possible embodiment, the apparatus may further include: an interaction module 540;
an interaction module 540, configured to receive a waste liquid selection instruction from a user;
The control module 520 may be further configured to determine a target temperature of the waste liquid and a temperature control mode of the expansion valve according to the waste liquid selection command, and may be further configured to adjust a throttle degree of the expansion valve according to the target temperature and the temperature control mode.
It should be noted that the waste liquid selection instruction may be used to indicate a type of waste liquid to be treated by the low-temperature evaporation system; the target temperature means that the target liquid in the waste liquid is required to be cooled to be in a liquid state after being vaporized.
In another possible embodiment, the temperature control mode may include a water vapor mode and/or a mixed gas mode.
In another possible embodiment, the apparatus may further include:
the control module 520 may be further configured to control the throttle level of the expansion valve to a first preset value in response to the start of the cryogenic evaporation system until the air pressure in the evaporation device reaches a preset pressure;
the control module 520 may be further configured to control the degree of throttling of the expansion valve to a second preset value in response to the cryogenic vaporization system being turned off until the gaseous target liquid in the condensing device is fully cooled to a liquid state.
Referring to fig. 6, a schematic diagram of another apparatus for low-temperature evaporation according to an embodiment of the present application may include:
A processor 610, a memory 620, and an I/O interface 630. The processor 610, the memory 620 and the I/O interface 630 may be communicatively connected, the memory 620 being configured to store instructions, the processor 610 being configured to execute the instructions stored by the memory 620 to implement the method steps corresponding to fig. 3-4 as described above.
The processor 610 is configured to execute the instructions stored in the memory 620 to control the I/O interface 630 to receive and transmit signals, thereby completing the steps in the method described above. The memory 620 may be integrated into the processor 610 or may be provided separately from the processor 610.
Memory 620 may also include a storage system 621, cache 622, and RAM623. Wherein the cache 622 is a level one memory that exists between the RAM623 and the CPU, consisting of static memory chips (SRAMs), which are smaller in capacity but much faster than main memory, approaching the CPU's speed; RAM623 is internal memory that exchanges data directly with the CPU, can be read and written at any time (except when refreshed), and is fast, typically as a temporary data storage medium for an operating system or other program in operation. The three combine to implement the memory 620 function.
As an implementation, the functions of the I/O interface 630 may be considered to be implemented by a transceiver circuit or a dedicated chip for transceiving. Processor 610 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
As another implementation, a manner of using a general purpose computer may be considered to implement the apparatus provided by the embodiments of the present application. I.e., program code that implements the functions of the processor 610, i/O interface 630 is stored in the memory 620. A general purpose processor implements the functions of the processor 610, i/O interface 630 by executing code in the memory 620.
The concepts related to the technical solutions provided by the embodiments of the present application, explanation and detailed description of the concepts related to the embodiments of the present application and other steps refer to the foregoing methods or descriptions of the contents of the method steps performed by the apparatus in other embodiments, which are not repeated herein.
As another implementation of this embodiment, a computer-readable storage medium is provided, on which instructions are stored, which when executed perform the method in the method embodiment described above.
As another implementation of this embodiment, a computer program product is provided that contains instructions that, when executed, perform the method of the method embodiment described above.
Those skilled in the art will appreciate that only one memory and processor is shown in fig. 6 for ease of illustration. In an actual terminal or server, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present application are not limited in this respect.
It should be appreciated that in embodiments of the present application, the processor may be a central processing unit (Central Processing Unit, CPU for short), other general purpose processor, digital signal processor (Digital Signal Processing, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.
It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable ROM (Electrically EPROM, EEPROM), or a flash Memory. The volatile memory may be a random access memory (Random Access Memory, RAM for short) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (Direct Rambus RAM, DR RAM).
Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.
It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The bus may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. But for clarity of illustration, the various buses are labeled as buses in the figures.
It should also be understood that the first, second, third, fourth and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of the application.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.
In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block, abbreviated ILBs) and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.
Embodiments of the present application also provide a computer storage medium storing a computer program that is executed by a processor to implement some or all of the steps of any one of the account management methods described in the above method embodiments.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform part or all of the steps of any one of the account management methods described in the method embodiments above.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The low-temperature evaporation method is characterized by being applied to a low-temperature evaporation system, wherein the low-temperature evaporation system comprises a controller, a temperature measuring device, a compressor, an evaporation device, a condensing device, a suction device, a liquid storage device and a touch panel; a heating coil is arranged at the bottom of the inner bin of the evaporation device; the condensing device comprises an inner cylinder and an outer cylinder, the inner cylinder comprises a refrigerant chamber and a condensing pipe, the input end of the condensing pipe is connected with a vapor outlet of the evaporating device, the output end of the condensing pipe is connected with a suction end of the suction device, a water inlet end of the suction device is connected with a water outlet of the outer cylinder, a water outlet end of the suction device is connected with an upper port of the outer cylinder, the water outlet of the outer cylinder is connected with the liquid storage device, and a pipeline loop from the evaporating device to the liquid storage device forms a vapor condensing system of the low-temperature evaporating system; the input end of the compressor is connected with the lower port of the refrigerant chamber, the output end of the compressor is connected with the input end of a heating coil of the evaporation device, the output end of the heating coil is connected with the input end of the refrigerant chamber through a first pipeline, the first pipeline is provided with an expansion valve, and a refrigerant pipeline loop from the output end of the compressor to the input end of the compressor forms a refrigerant heat pump system of the low-temperature evaporation system; the temperature measuring device is used for detecting the temperature of the environment where the low-temperature evaporation system is located and the working temperature of elements contained in the low-temperature evaporation system according to a preset period; the controller is respectively connected with the expansion valve and the temperature measuring device in a communication way and is used for controlling the throttling degree of the expansion valve so that the condensing device can work according to preset conditions; the touch panel is in communication connection with the controller and is used for a user to select a waste liquid type and/or set parameters, wherein the waste liquid type comprises at least one of organic waste liquid, inorganic waste liquid or mixed waste liquid, and the parameters comprise at least one of pressure, temperature or power; the method comprises the following steps:
Collecting the ambient temperature according to a first preset period, and determining the lower temperature control limit of the low-temperature evaporation system according to the ambient temperature;
determining an upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system, wherein the performance requirements of the elements comprise a preset working temperature range of the elements;
collecting the internal temperature of the liquid storage device according to a second preset period;
judging whether the internal temperature is lower than the temperature control lower limit;
if yes, reducing the throttling degree of the expansion valve for weakening the condensation effect;
if not, the throttle degree of the expansion valve is lifted or the current throttle degree is kept.
2. The method of claim 1, further comprising the steps of, after said determining an upper temperature control limit for said cryogenic vaporization system based on performance requirements of components contained in said cryogenic vaporization system:
collecting the working temperature of elements contained in the low-temperature evaporation system according to a third preset period;
judging whether the working temperature of the element exceeds the upper temperature control limit;
if yes, the throttling degree of the expansion valve is increased, and the working temperature of elements contained in the low-temperature evaporation system is reduced;
If not, the throttle degree of the expansion valve is reduced or the current throttle degree is kept, so that the working temperature of the elements contained in the low-temperature evaporation system meets the preset condition.
3. The method according to claim 1, characterized in that the method further comprises the steps of:
receiving a waste liquid selection instruction of a user, wherein the waste liquid selection instruction is used for representing the type of waste liquid to be treated by the low-temperature evaporation system;
determining a target temperature of the waste liquid and a temperature control mode of the expansion valve according to the waste liquid selection instruction, wherein the target temperature represents that the target liquid in the waste liquid is required to be cooled to be in a liquid state after being vaporized, and the temperature control mode comprises a water vapor mode and/or a mixed gas mode;
and adjusting the throttling degree of the expansion valve according to the target temperature and the temperature control mode.
4. A method according to claim 1 or 3, characterized in that the method further comprises the steps of:
responding to the starting of the low-temperature evaporation system, and controlling the throttling degree of the expansion valve to be a first preset value until the air pressure in the evaporation device reaches a preset pressure;
and responding to the closing of the low-temperature evaporation system, and controlling the throttling degree of the expansion valve to be a second preset value until the gaseous target liquid in the condensing device is completely cooled to be liquid.
5. A device for cryogenic evaporation for carrying out the method according to any one of claims 1-4, characterized in that the device comprises: the device comprises an acquisition module, a control module and a judgment module;
the acquisition module is used for acquiring the ambient temperature according to a first preset period;
the control module is used for determining a lower temperature control limit of the low-temperature evaporation system according to the ambient temperature and determining an upper temperature control limit of the low-temperature evaporation system according to the performance requirements of elements contained in the low-temperature evaporation system;
the acquisition module is also used for acquiring the internal temperature of the liquid storage device according to a second preset period;
the judging module is used for judging whether the internal temperature is lower than the lower temperature control limit;
the control module is further configured to reduce a throttle level of the expansion valve when the internal temperature is lower than the lower temperature control limit, and further configured to increase the throttle level of the expansion valve or maintain a current throttle level when the internal temperature is not lower than the lower temperature control limit.
6. The apparatus of claim 5, wherein the apparatus further comprises: an interaction module;
the acquisition module is also used for acquiring the working temperature of the elements contained in the low-temperature evaporation system according to a third preset period;
The judging module is further used for judging whether the working temperature of the element exceeds the upper temperature control limit;
the control module is further used for increasing the throttling degree of the expansion valve when the working temperature of the element exceeds a preset value, and reducing the throttling degree of the expansion valve or keeping the current throttling degree when the working temperature of the element does not exceed the preset value;
the interaction module is used for receiving a waste liquid selection instruction of a user, wherein the waste liquid selection instruction is used for representing the type of waste liquid to be treated by the low-temperature evaporation system;
the control module is further used for determining a target temperature of the waste liquid and a temperature control mode of the expansion valve according to the waste liquid selection instruction, and adjusting the throttling degree of the expansion valve according to the target temperature and the temperature control mode, wherein the target temperature represents that the target liquid in the waste liquid is required to be cooled to be in a liquid state after being gasified, and the temperature control mode comprises a water vapor mode and/or a mixed gas mode;
the control module is further used for responding to the starting of the low-temperature evaporation system, and controlling the throttling degree of the expansion valve to be a first preset value until the air pressure in the evaporation device reaches a preset pressure;
And the control module is also used for controlling the throttling degree of the expansion valve to be a second preset value in response to the closing of the low-temperature evaporation system until the gaseous target liquid in the condensing device is completely cooled to be liquid.
7. A device for cryogenic evaporation comprising:
a processor, a memory and a bus, said processor and said memory being connected by said bus, wherein said memory is adapted to store a set of program code, said processor being adapted to invoke said program code stored in said memory to perform the method according to any of claims 1-4.
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| CN101446463A (en) * | 2007-11-27 | 2009-06-03 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, and self-adaptive control method and device of heat pump device |
| WO2018107982A1 (en) * | 2016-12-12 | 2018-06-21 | 重庆美的通用制冷设备有限公司 | Control method and device for use in electronic expansion valve, and cooling system |
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| CN111111239A (en) * | 2020-01-15 | 2020-05-08 | 上海敏杰制药机械有限公司 | Energy-saving heat pump evaporation concentration automatic control system |
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| JPH0957002A (en) * | 1995-08-25 | 1997-03-04 | Konica Corp | Heat pump type evaporating concentrator and treatment using same |
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| CN101446463A (en) * | 2007-11-27 | 2009-06-03 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, and self-adaptive control method and device of heat pump device |
| WO2018107982A1 (en) * | 2016-12-12 | 2018-06-21 | 重庆美的通用制冷设备有限公司 | Control method and device for use in electronic expansion valve, and cooling system |
| CN208170793U (en) * | 2018-01-23 | 2018-11-30 | 昆山威胜达环保设备有限公司 | A kind of heat-pump-type cryogenic vaporizer vapor cooling device |
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