CN111077098A - Binary or ternary mixed refrigerant concentration detection method, device, equipment and system - Google Patents
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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Abstract
The invention discloses a binary or ternary mixed refrigerant concentration detection method, a binary or ternary mixed refrigerant concentration detection device, binary or ternary mixed refrigerant concentration detection equipment and a binary or ternary mixed refrigerant concentration detection system, wherein the binary or ternary mixed refrigerant concentration detection method comprises the following steps: acquiring a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant, wherein the mixed refrigerant consists of two or three single working medium refrigerants; acquiring the temperature and the pressure of the current mixed refrigerant; acquiring a second group of physical data of each single working medium refrigerant corresponding to the target physical characteristic at the temperature; and determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data. The method for detecting the concentration of the mixed refrigerant realizes real-time monitoring of the concentration of the mixed refrigerant, is simple, and improves the accuracy of the concentration of the mixed refrigerant.
Description
Technical Field
The invention relates to the field of refrigeration, air conditioning and heat pump system analysis, in particular to a binary or ternary mixed refrigerant concentration detection method, device, equipment and system.
Background
With the development of refrigeration, air conditioning and heat pump technologies and the increasing demand of people on environmental protection, the traditional single working medium refrigerant cannot simultaneously meet the requirements of various aspects such as thermal performance, environmental protection, safety and the like, and the mixed refrigerant provides more choices and possibilities and is gradually widely applied. The mixed refrigerant is formed by mixing multiple working medium refrigerants, and in the process of actually using the mixed refrigerant for refrigeration, the actual operation concentration is often different from the filling concentration due to gas-liquid phase stagnation. When the refrigerant leaks from the refrigerating system, the leakage condition of the mixed refrigerant cannot be accurately monitored in real time, and the monitoring result of the actual running state of the refrigerating system is influenced, so that the control of the actual running of the refrigerating system is influenced, and the application of the mixed refrigerant in the refrigerating system is hindered.
In the related art, the concentration of the mixed refrigerant in the current refrigeration system is obtained by sampling the mixed refrigerant and analyzing the sampling result by a gas chromatograph. However, the method cannot realize real-time monitoring of the concentration of the mixed refrigerant, the monitoring result is delayed, and the gas chromatograph is expensive, so that the monitoring cost is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the concentration of the mixed refrigerant in the refrigeration system in the prior art cannot be monitored in real time, so as to provide a method, an apparatus, a device and a system for detecting the concentration of the mixed refrigerant.
According to a first aspect, an embodiment of the present invention provides a binary or ternary mixed refrigerant concentration detection method, including: acquiring a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant, wherein the mixed refrigerant consists of two or three single working medium refrigerants; acquiring the temperature and the pressure of the current mixed refrigerant; acquiring a second group of physical data of each single working medium refrigerant corresponding to the target physical characteristic at the temperature and/or the pressure; and determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data. The concentration of the mixed refrigerant is directly determined through the obtained first group of physical data and the second group of physical data, the efficiency of obtaining the concentration of the mixed refrigerant is improved, the real-time monitoring on the concentration of the mixed refrigerant is realized, and the monitoring method is simple and high in accuracy.
Optionally, the determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data includes: and obtaining the mass ratio of each single working medium refrigerant in the mixed refrigerant according to the first group of physical data and the second group of physical data, and taking the mass ratio as the concentration of each component of the mixed refrigerant.
According to a second aspect, an embodiment of the present invention provides a binary or ternary mixed refrigerant concentration detection apparatus, including: the system comprises a first data acquisition module, a second data acquisition module and a data processing module, wherein the first data acquisition module is used for acquiring a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant, and the mixed refrigerant consists of two or three single working medium refrigerants; the acquisition module is used for acquiring the temperature and the pressure of the mixed refrigerant at present; the second data acquisition module is used for acquiring a second group of physical data of each single working medium refrigerant corresponding to the target physical characteristic under the temperature and the pressure; and the determining module is used for determining the concentration of each component of the mixed refrigerant according to the first set of physical data and the second set of physical data. The concentration of the mixed refrigerant is directly determined through the obtained first group of physical data and the second group of physical data, the efficiency of obtaining the concentration of the mixed refrigerant is improved, the real-time monitoring on the concentration of the mixed refrigerant is realized, and the monitoring method is simple and high in accuracy.
According to a third aspect, an embodiment of the present invention provides a binary or ternary mixed refrigerant concentration detection apparatus, including: the physical characteristic acquisition device is used for acquiring physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of the mixed refrigerant; the temperature acquisition device is used for acquiring the temperature of the mixed refrigerant; the pressure acquisition device is used for acquiring the pressure of the mixed refrigerant; a controller, comprising a memory and a processor, wherein the memory and the processor are communicatively connected with each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the binary or ternary mixed refrigerant concentration detection method according to the first aspect or any one of the optional embodiments of the first aspect. Through setting up the collection system who contains the physical data physical characteristics who gathers mixed refrigerant, gather the temperature acquisition device of mixed refrigerant temperature and gather the pressure acquisition device of mixed refrigerant pressure, and receive the physical characteristics collection system, the mixed refrigerant concentration detection equipment of the controller of the data that temperature acquisition device and pressure acquisition device gathered, can directly be used for detecting mixed refrigerant concentration, the convenience of mixed refrigerant concentration detection has been improved, the real-time supervision to mixed refrigerant concentration has been realized simultaneously, the monitoring method is simple, the accuracy is high.
Optionally, the apparatus further comprises: a data interface for receiving physical data.
According to a fourth aspect, an embodiment of the present invention provides a mixed refrigerant concentration detection system, including: the refrigeration equipment comprises a condenser, a first expansion valve, an evaporator and a compressor, wherein the condenser, the first expansion valve, the evaporator and the compressor contain mixed refrigerant; the binary or ternary mixed refrigerant concentration detection apparatus as described in the third aspect or any one of the alternative embodiments of the third aspect. Through setting up the collection system who contains the physical data physical characteristics who gathers mixed refrigerant, gather the temperature acquisition device of mixed refrigerant temperature and gather the pressure acquisition device of mixed refrigerant pressure, and receive the physical characteristics collection system, the mixed refrigerant concentration detection equipment of the controller of the data that temperature acquisition device and pressure acquisition device gathered, be connected this equipment with refrigeration plant, can directly be used for detecting mixed refrigerant concentration in the refrigeration plant, the convenience of mixed refrigerant concentration in the detection refrigeration plant has been improved, the real-time supervision to mixed refrigerant concentration has been realized simultaneously, monitoring method is simple, and the accuracy is high.
Optionally, the physical characteristic collecting device in the mixed refrigerant concentration detecting device is detachably connected to a pipe between the condenser and the first expansion valve.
Optionally, the refrigeration plant further comprises a flash tank, the flash tank is arranged at the output side of the first expansion valve, the evaporator is arranged at the output side of the flash tank, and a second expansion valve is arranged between the flash tank and the evaporator.
Optionally, the physical characteristic collecting device in the mixed refrigerant concentration detecting device is detachably connected to a pipeline between the flash tank and the second expansion valve.
According to a fifth aspect, an embodiment of the present invention provides a computer apparatus, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to cause the at least one processor to perform the binary or ternary mixed refrigerant concentration detection method of the first aspect or any one of the alternative embodiments of the first aspect.
According to a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute the binary or ternary mixed refrigerant concentration detection method described in the first aspect or any one of the alternative embodiments of the first aspect.
The technical scheme of the invention has the following advantages:
the invention provides a binary or ternary mixed refrigerant concentration detection method, which comprises the steps of obtaining a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant consisting of two or three single working medium refrigerants and the temperature and the pressure of the current mixed refrigerant, obtaining a second group of physical data corresponding to target physical characteristics of each single working medium refrigerant under the temperature and/or the pressure, and determining the concentration of the mixed refrigerant according to the first group of physical data and the second group of physical data. The concentration of the mixed refrigerant is directly obtained through the obtained first group of physical data and the second group of physical data, the efficiency of obtaining the concentration of the mixed refrigerant is improved, the real-time monitoring on the concentration of the mixed refrigerant is realized, and the monitoring method is simple and high in accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a binary or ternary mixed refrigerant concentration detection method according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a binary or ternary mixed refrigerant concentration detection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of a binary or ternary mixed refrigerant concentration detection apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of a binary or ternary mixed refrigerant concentration detection system in an embodiment of the present invention;
FIG. 5 is a schematic block diagram of a binary or ternary mixed refrigerant concentration detection system in an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a binary or ternary mixed refrigerant concentration detection system in an embodiment of the present invention;
FIG. 7 is a functional block diagram of a computer device in an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a binary or ternary mixed refrigerant concentration detection method, which can be used for monitoring the mixed refrigerant concentration in refrigeration equipment in real time, wherein the refrigeration equipment can be applied to a heat pump system or a refrigeration system or an air conditioning system. The method can be used in a terminal and a server, and the embodiment of the application takes the terminal as an example for description. As shown in fig. 1, the mixed refrigerant concentration detection method includes:
s11, obtaining a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of the mixed refrigerant, wherein the mixed refrigerant is composed of two or three single working medium refrigerants.
Illustratively, if the mixed refrigerant is composed of two refrigerants of a single working medium, the first set of physical data may be any one of optical refractive index, infrared spectrum and density. If the mixed refrigerant is composed of three refrigerants with single working medium, the first group of physical data can be any two of the optical refractive index, the infrared spectrum and the density. If the first group of physical data is the optical refractive index, corresponding physical data can be obtained through the refractive index sensor; if the first set of physical data is the optical refractive index and the infrared spectrum, the corresponding physical data can be obtained through the refractive index sensor and the infrared spectrum sensor. The type of the target physical characteristic of the mixed refrigerant is different, and the device or the mode used for acquiring the physical data can be different, and can be determined by those skilled in the art according to the actual needs, and the mode for acquiring the physical data is not limited in the present application.
And S12, acquiring the temperature and the pressure of the current mixed refrigerant.
For example, the temperature of the current mixed refrigerant can be obtained by using a temperature sensor, and the temperature sensor can be arranged in the refrigeration equipment where the mixed refrigerant is located to collect the temperature of the mixed refrigerant in real time; or the temperature of the current mixed refrigerant can be determined according to the working condition of the current mixed refrigerant based on the corresponding relation between the working condition and the temperature of the mixed refrigerant in the historical data. Similarly, the pressure of the current mixed refrigerant can be obtained by using a pressure sensor; or the pressure of the current mixed refrigerant is determined according to the working condition of the current mixed refrigerant based on the corresponding relation between the working condition and the pressure of the mixed refrigerant in historical data. The obtaining mode of the temperature and the pressure is not limited in the present application, and can be determined by those skilled in the art according to actual needs.
And S13, acquiring a second set of physical data of the target physical characteristics corresponding to each single working medium refrigerant under the temperature and/or the pressure.
Illustratively, according to the obtained temperature and pressure of the mixed refrigerant, a second set of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of the single working medium refrigerants at the same temperature is obtained respectively. At the same temperature, the second group of physical data can be obtained by obtaining a data table of the second group of physical data corresponding to the temperature, the light refractive index, the infrared spectrum and the density of the single working medium refrigerant under different temperatures and pressures, and obtaining the second group of physical data corresponding to the single working medium refrigerant under the current temperature and pressure according to the data table. When the physical characteristics of the obtained mixed refrigerant are the refractive index and the infrared spectrum, because the influence of temperature on the refractive index and the infrared spectrum is large, in order to improve the efficiency of obtaining the second group of physical data, the refractive index or the infrared spectrum of the light at the current temperature can be obtained only by searching a data table corresponding to the refractive index or the infrared spectrum of the single working medium refrigerant or the temperature, and the data table corresponding to the refractive index or the infrared spectrum, the temperature and the pressure can also be searched, so that the refractive index or the infrared spectrum of the light at the current temperature and the pressure can be obtained; when the physical characteristics of the obtained mixed refrigerant comprise density, the influence of temperature and pressure on the density of the refrigerant is large, and in order to ensure the accuracy of second physical data corresponding to the obtained single working medium refrigerant, a data table of the density, the temperature and the pressure of the single working medium refrigerant can be searched simultaneously, and the density of the single working medium refrigerant under the current temperature and the current pressure is obtained. The acquisition mode of the second group of physical data can also be obtained by calculating the functional relationship between the second group of physical data of the single working medium refrigerant and the temperature; or the user may actually measure the second set of physical data through the corresponding measuring device, and upload the second set of physical data to the terminal through the data interface on the terminal.
If the existing database contains the functional relationship between the current first group of physical data and the second group of physical data, after the first group of physical data is obtained, the second group of physical data corresponding to the single working medium refrigerant at the temperature can be obtained by reading the functional relationship in the database. If the existing database does not contain the functional relationship between the first group of physical data of the mixed refrigerant and the second group of physical data of each single working medium refrigerant forming the mixed refrigerant, performing relationship fitting after acquiring the second group of physical data of the target physical characteristics corresponding to each single working medium refrigerant under the temperature and/or pressure and the first group of physical data of the target physical characteristics of the mixed refrigerant under the typical proportion to obtain a fitted functional relationship, and storing the fitted functional relationship into the database.
And S14, determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data.
For example, the manner of determining the concentrations of the components of the mixed refrigerant according to the acquired first set of physical data and the acquired second set of physical data may be to acquire the first set of physical data, the second set of physical data and the concentrations at different temperatures in a target historical time period in advance, perform fitting calculation on the first set of physical data, the second set of physical data and the concentrations at different temperatures and/or pressures to obtain a fitting relation function between the first set of physical data, the second set of physical data and the concentrations at different temperatures and/or pressures, and store the fitting relation function. Obtaining the concentration of the mixed refrigerant through a fitting relation function based on the first group of physical data and the second group of physical data acquired in real time; or acquiring a data table of corresponding relations between a first group of physical data, a second group of physical data and the concentration of the mixed refrigerant, wherein the first group of physical data, the second group of physical data and the concentration of the mixed refrigerant correspond to each other at different temperatures within a target historical time, storing the data table, and traversing the data table according to the acquired first group of physical data and the acquired second group of physical data to obtain the concentrations of the components of the mixed refrigerant, which correspond to the current first group of physical data and the current second group of physical data.
The binary or ternary mixed refrigerant concentration detection method provided by this embodiment obtains a first set of physical data corresponding to any one or two physical characteristics of a light refractive index, an infrared spectrum, and a density of a mixed refrigerant composed of two or three single working medium refrigerants, and a temperature and a pressure of the current mixed refrigerant, obtains a second set of physical data corresponding to each single working medium refrigerant at the temperature and/or the pressure, and determines the mixed refrigerant concentration according to the first set of physical data and the second set of physical data. The concentration of the mixed refrigerant is directly obtained through the obtained first group of physical data and the second group of physical data, the efficiency of obtaining the concentration of the mixed refrigerant is improved, the real-time monitoring on the concentration of the mixed refrigerant is realized, and the monitoring method is simple and high in accuracy.
As an alternative embodiment of the present application, step S13 includes:
and obtaining the mass ratio of the single working medium refrigerant in the mixed refrigerant according to the first group of physical data and the second group of physical data, and taking the mass ratio as the concentration of each component of the mixed refrigerant.
Illustratively, if the mixed refrigerant is comprised of a single working fluid refrigerant a and a single working fluid refrigerant B, the selected physical characteristic is optical refractive index, and the first set of physical data and the second set of physical data are optical refractive index. The mixing mass ratio of the two single working medium refrigerants is A: b ═ x: (1-x), at a certain temperature T, the optical refractive index of the mixed refrigerant A + B measured by the refractive index sensor is R (A + B), at the temperature T, the optical refractive indexes of the single working medium refrigerant A and the single working medium refrigerant B are respectively R (A) and R (B), and the refractive index functional relation of the mixed refrigerant can be obtained by fitting through the mixed mass ratio and the measured related data: r (a + B) ═ f (x, R (a), R (B)). According to the known R (A), R (B) and the R (A + B) measured by an instrument, the mass ratio of two single working medium refrigerants is obtained as x: (1-x) the mass ratio is defined as the mixed refrigerant concentration ratio.
If the mixed refrigerant consists of a single working medium refrigerant A, a single working medium refrigerant B and a single working medium refrigerant C, the selected physical characteristics are the optical refractive index and the density, and the first group of physical data and the second group of physical data are the optical refractive index and the density. The mixing mass ratio of the three single working medium refrigerants is A: b: c ═ x 1: x 2: (1-x1-x2), the optical refractive index of the mixed refrigerant A + B + C measured by the refractive index sensor at a certain temperature T is R (A + B + C), and the optical refractive indexes of the single working medium refrigerant A, the single working medium refrigerant B and the single working medium refrigerant C at the temperature T are R (A), R (B) and R (C) respectively. Through the mixing ratio and the measured related data, the refractive index functional relation of the mixed refrigerant can be obtained through fitting:
R(A+B+C)＝f(x1,x2,R(A),R(B),R(C))
under the temperature T and the pressure P, the densities of the single working medium refrigerant A, the single working medium refrigerant B, the single working medium refrigerant C and the mixed refrigerant A + B + C are respectively rho (A), rho (B), rho (C) and rho (A + B + C) through measurement of a density sensor, and the density functional relation of the mixed refrigerant can be obtained through fitting according to the mixing proportion and measured density related data:
ρ(A+B+C)＝f(x1,x2,ρ(A),ρ(B),ρ(C))
according to the known R (A), R (B) and R (C), and the measured R (A + B + C), rho (A), rho (B), rho (C) and rho (A + B + C), the mass ratio of three single working medium refrigerants is x 1: x 2: (1-x1-x2) and the mass ratio is used as the concentration ratio of the mixed refrigerant.
Example 2
The present embodiment provides a binary or ternary mixed refrigerant concentration determining apparatus, which is used to implement the foregoing embodiments and any optional embodiments, and the details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. As shown in fig. 2, the binary or ternary mixed refrigerant concentration determining apparatus includes:
the first data acquisition module 21 is configured to acquire a first set of physical data corresponding to any one or two physical characteristics of a light refractive index, an infrared spectrum, and a density of a mixed refrigerant, where the mixed refrigerant is composed of two or three single working medium refrigerants.
And the obtaining module 22 is used for obtaining the temperature and the pressure of the current mixed refrigerant.
And the second data acquisition module 23 is used for acquiring a second group of physical data of the physical characteristics corresponding to each single working medium refrigerant under temperature and/or pressure.
And the determining module 24 is used for determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data.
The mixed refrigerant concentration determining device provided by the embodiment acquires a first group of physical data corresponding to any one or two physical characteristics of a light refractive index, an infrared spectrum and density of a mixed refrigerant consisting of two or three single working medium refrigerants and the temperature and pressure of the current mixed refrigerant, acquires a second group of physical data corresponding to the physical characteristics of each single working medium refrigerant under the temperature and/or pressure, and determines the concentration of each component of the mixed refrigerant according to the first group of physical data and the second group of physical data. The concentration of the mixed refrigerant is directly obtained through the obtained first group of physical data and the second group of physical data, the efficiency of obtaining the concentration of the mixed refrigerant is improved, the real-time monitoring on the concentration of the mixed refrigerant is realized, and the monitoring method is simple and high in accuracy.
As an optional embodiment of the present application, the determining module 24 includes:
and the calculating submodule is used for obtaining the mass ratio of the single working medium refrigerant in the mixed refrigerant according to the first group of physical data and the second group of physical data, and the mass ratio is used as the concentration of each component of the mixed refrigerant.
Example 3
This embodiment provides a binary or ternary mixed refrigerant concentration detection device, can be used to monitor the mixed refrigerant concentration of refrigeration plant in real time, as shown in fig. 3, this binary or ternary mixed refrigerant concentration detection device includes:
and the physical characteristic acquisition device 31 is used for acquiring physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of the mixed refrigerant.
Illustratively, the physical characteristic acquisition device may be one or more of a refractive index sensor, an infrared spectrum sensor, and a density sensor. The physical characteristic acquisition device is not limited in the embodiment of the application, and a person skilled in the art can select different physical characteristic acquisition devices for acquiring physical data of target physical characteristics in the mixed refrigerant and the corresponding single working medium refrigerant according to actual use requirements.
The physical characteristic acquisition device can be connected with a refrigerating device where the mixed refrigerant is located in the refrigerating system or connected with a circulation pipeline where the mixed refrigerant is located so as to acquire physical data of the mixed refrigerant in real time. The physical characteristic acquisition device is connected with the refrigeration equipment pipeline in the embodiment of the application, so that the related physical data of the refrigerant in the liquid state can be conveniently acquired, and the accuracy of the acquired related physical data is improved.
The physical characteristic acquisition devices are not limited in category and number, and a person skilled in the art can determine the category and number according to the number of the single working medium refrigerants included in the mixed refrigerant, for example, if the mixed refrigerant is composed of two single working medium refrigerants, one physical characteristic acquisition device can be selected, if the mixed refrigerant is composed of three single working medium refrigerants, two physical characteristic acquisition devices can be selected, and so on.
And the temperature acquisition device 32 is used for acquiring the temperature of the mixed refrigerant.
The temperature acquisition device may be any device that can acquire temperature, such as a temperature sensor or a thermometer, for example, and the temperature acquisition device is not limited in the embodiments of the present application and may be determined by a person skilled in the art according to actual use needs. The temperature acquisition device is used for acquiring the temperature of the current mixed refrigerant, so that the physical data corresponding to the single working medium refrigerant at the same temperature can be acquired conveniently based on the temperature.
And a pressure collecting device 33 for collecting the pressure of the mixed refrigerant.
The pressure acquisition device may be any device that can acquire pressure, such as a pressure sensor or a pressure gauge, for example, and the embodiment of the present application does not limit the pressure acquisition device, and a person skilled in the art may determine the pressure acquisition device according to actual use needs. The pressure acquisition device is used for acquiring the pressure of the current mixed refrigerant, so that the physical data corresponding to the single working medium refrigerant under the same corresponding pressure can be acquired conveniently based on the pressure.
When the mixed refrigerant consists of three single working medium refrigerants, the first group of physical data can comprise any two of the optical refractive index, the infrared spectrum and the density, and if the first group of physical data is the optical refractive index and the infrared spectrum, the optical refractive index acquisition device and the infrared spectrum acquisition device can be selected to acquire the first group of physical data at the current temperature; if the first group of physical data is the optical refractive index and the density, acquiring the temperature and the pressure of the current mixed refrigerant by using a pressure acquisition device, and respectively selecting the optical refractive index acquisition device and the density acquisition device to acquire the optical refractive index and the density at the current temperature and the current pressure; if the target physical characteristics are infrared spectrum and density, the pressure of the current mixed refrigerant needs to be acquired by using a pressure acquisition device while the temperature is acquired, and the infrared spectrum acquisition device and the density acquisition device can be selected to acquire the infrared spectrum and the density respectively at the current temperature and the current pressure.
The controller 34, including the memory 341 and the processor 342, is communicatively coupled between the memory 341 and the processor 342.
Illustratively, the processor 342 may be a Central Processing Unit (CPU). The Processor 342 may also be other general purpose processors, Digital Signal Processors (DSPs), Graphics Processing Units (GPUs), embedded Neural Network Processors (NPUs), or other dedicated deep learning coprocessors, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof.
The memory 341, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the mixed refrigerant concentration determination method in the embodiment of the present invention (for example, the first data acquisition module 21, the acquisition module 22, the second data acquisition module 23, and the determination module 24 shown in fig. 2). The memory 341 stores therein computer instructions that the processor 342 executes to perform the binary or ternary mixed refrigerant concentration detection method in the above-described method embodiments.
The memory 341 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 342, and the like. Further, memory 341 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 331 optionally includes memory located remotely from processor 342, and such remote memory may be coupled to processor 342 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 341 and, when executed by the processor 342, perform a binary or ternary mixed refrigerant concentration detection method as in the embodiment of fig. 1.
According to the mixed refrigerant concentration detection equipment provided by the embodiment of the application, the physical characteristic acquisition device is used for acquiring the physical data of the target physical characteristic of the mixed refrigerant, the temperature acquisition device is used for acquiring the temperature of the mixed refrigerant, the pressure acquisition device is used for acquiring the pressure of the mixed refrigerant, and the controller is used for sending out the control command, so that the system completes the concentration detection of the mixed refrigerant according to the control command sent out by the controller according to the mixed refrigerant concentration detection method. The binary or ternary mixed refrigerant concentration detection method comprises the steps of obtaining a first group of physical data corresponding to any one or two physical characteristics of the light refractive index, the infrared spectrum and the density of a mixed refrigerant consisting of two or three single working medium refrigerants, obtaining the temperature and the pressure of the current mixed refrigerant, obtaining a second group of physical data corresponding to the physical characteristics of each single working medium refrigerant at the temperature and/or the pressure, and determining the concentration of each component of the mixed refrigerant according to the first group of physical data and the second group of physical data, so that the concentration of the mixed refrigerant can be monitored in real time, and the monitoring method is simple and high in accuracy.
As an optional embodiment of the present application, the binary or ternary mixed refrigerant concentration detecting apparatus further includes: a data interface for receiving physical data.
Illustratively, when the device does not store corresponding single working medium refrigerant physical data, the data interface can be used for receiving physical data obtained by actual measurement of a user, and then obtaining the concentration of the mixed refrigerant through the physical data uploaded by the user and the corresponding functional relation.
Example 4
The embodiment of the present application further provides a binary or ternary mixed refrigerant concentration detection system, which can be used for monitoring the mixed refrigerant concentration of a refrigeration device in real time, as shown in fig. 4, the binary or ternary mixed refrigerant concentration detection system includes:
the refrigeration apparatus 41 includes a condenser 411, a first expansion valve 412, an evaporator 413, and a compressor 414, and the condenser 411 contains a mixed refrigerant.
Illustratively, the condenser 411 is used for condensing high-pressure and high-temperature refrigerant vapor sent by the compressor into liquid, the first expansion valve 412 is used for throttling the refrigerant liquid at the pipeline, the evaporator 413 is used for cooling the secondary refrigerant or cooled object by boiling and vaporizing liquid refrigerant, and the compressor 414 is used for compressing sucked gas; the condenser 411, the first expansion valve 412, the evaporator 413, and the compressor 414 are sequentially connected by pipes into a whole in the order in which the refrigeration cycle operates. When the system works, the refrigerant in the evaporator absorbs heat and is evaporated into gas-phase refrigerant, the outlet of the gas-phase refrigerant is connected with the inlet of the compressor, after the gas-phase refrigerant is sucked and compressed by the compressor, the pressure and the temperature of the refrigerant are increased, the refrigerant enters the inlet of the condenser through the outlet of the compressor, the refrigerant vapor is condensed into liquid with higher pressure through heat release in the condenser, the liquid enters the first expansion valve through the outlet of the condenser, the refrigerant liquid is throttled through the expansion valve at the pipeline to reduce the pressure and the temperature, and then enters the evaporator for evaporation after passing through the outlet of the evaporator, and the circulation work is carried out repeatedly, so that the aim of refrigeration.
The binary or ternary mixed refrigerant concentration detection apparatus as described in the previous embodiment. For details, reference is made to the above embodiment, which is not described herein again.
The binary or ternary mixed refrigerant concentration detection system provided by the embodiment of the application acquires physical data of target physical characteristics of mixed refrigerants in refrigeration equipment through connection of the physical characteristic acquisition device and the refrigeration equipment, and the controller sends out a control command, so that the system completes concentration determination of the mixed refrigerants according to the control command sent out by the controller according to the mixed refrigerant concentration determination method. The binary or ternary mixed refrigerant concentration detection system can realize real-time monitoring of the mixed refrigerant concentration, and the monitoring method is simple and high in accuracy.
As an alternative embodiment of the present application, the physical characteristic collecting device 31 in the binary or ternary mixed refrigerant concentration detecting apparatus is detachably connected to the pipe between the condenser 411 and the first expansion valve 412. The detachable connection can select a thread structure, a connector between the acquisition equipment and the pipeline between the condenser and the first expansion valve can be made into the thread structure, a nut groove is additionally welded at the pipeline to be connected, the acquisition equipment is screwed up according to a thread connection mode, and if pressure requirements exist, a raw material belt can be wound at the thread connection position, and thread glue can be smeared to meet the pressure requirements.
Example 5
The embodiment of the present application further provides a binary or ternary mixed refrigerant concentration detection system, as shown in fig. 5, the refrigeration equipment 41 further includes a flash tank 415, the flash tank 415 is disposed at an output side of the first expansion valve 412, the evaporator 413 is disposed at an output side of the flash tank 415, and a second expansion valve 416 is disposed between the flash tank 415 and the evaporator 413.
Illustratively, the two-stage compression system is provided with a flash tank, and the flash tank is respectively connected with a first expansion valve, an air supplementing one-way valve and a second expansion valve. Wherein the outlet of the first expansion valve is connected with the inlet of the flash tank, the gas outlet of the flash tank is connected with the inlet of the air-supplying one-way valve, and the liquid outlet of the flash tank is connected with the inlet of the second expansion valve. In addition, the outlet of the second expansion valve is connected with the inlet of the evaporator, and the inlet of the air replenishing one-way valve is connected with the outlet of the first compressor and the inlet of the second compressor. After the high-temperature and high-pressure refrigerant vapor is condensed to a liquid phase in the condenser, the first expansion valve is used for throttling the high-temperature and high-pressure refrigerant liquid at the pipeline, the throttled refrigerant enters the flash tank in a gas-liquid two-phase state to perform gas-liquid phase separation, and gas-liquid phase concentration separation is performed at the same time. The gas-phase refrigerant enters the intermediate pressure pipeline, passes through the gas supplementing one-way valve, is mixed with the refrigerant which is subjected to the first-stage compression by the first compressor, and then enters the air suction port of the second compressor to be subjected to the second-stage compression. And a second expansion valve is arranged between the flash tank and the evaporator. And after the liquid-phase refrigerants of the two systems flow out of the flash tank, the liquid-phase refrigerants enter a second expansion valve for secondary throttling to form a low-temperature and low-pressure refrigerant, the evaporator is arranged on the output outlet side of the flash tank, and the second expansion valve is arranged between the flash tank and the evaporator. The refrigerant in the evaporator absorbs heat and evaporates into a gas phase, and is sucked and compressed by the compressor.
Through the mode, the related physical data of the air conditioner and the liquid phase region refrigerant in the heat pump system are obtained. However, it should be noted that, due to the existence of the flash tank, the concentrations of the mixed refrigerant entering the flash tank and the mixed refrigerant of the gas phase and the liquid phase in the flash tank are different, and the concentrations of the mixed refrigerant in the evaporator and the condenser need to be tested at the same time in order to monitor the accurate operation state in the evaporator and the condenser. Preferably, the first test area is a pipeline from the outlet of the condenser to the inlet of the first expansion valve, and the measured physical data is physical data of the mixed refrigerant in the condenser; preferably, the second test area is a pipeline between the liquid phase outlet of the flash tank and the second expansion valve, and the measured physical data is physical data of the mixed refrigerant in the evaporator.
As an alternative embodiment of the present application, the physical characteristic collecting device 31 of the binary or ternary mixed refrigerant concentration detecting apparatus is detachably connected to the pipe between the flash tank 415 and the second expansion valve 416.
Illustratively, a physical characteristic acquisition device is disposed in the conduit between the flash tank and the second expansion valve, where the mixed refrigerant is in a liquid state, for acquiring physical data of a target physical characteristic of the mixed refrigerant. Can dismantle the connection and can select the helicitic texture, the connection head between physics characteristic collection system and the pipeline of flash tank and second expansion valve can make helicitic texture, adds a nut groove of welding in the pipeline department that needs the connection, screws up physics characteristic collection system according to the threaded connection mode, if there is the pressure requirement, can twine the thread seal area at this threaded connection department, wipe the thread gluing and satisfy its pressure requirement.
Example 6
The embodiment of the present application further provides a binary or ternary mixed refrigerant concentration detection system, as shown in fig. 6, the refrigeration equipment 41 further includes a flash tank 415, the flash tank 415 is disposed at an output side of the first expansion valve 412, the evaporator 413 is disposed at an output side of the flash tank 415, and a second expansion valve 416 is disposed between the flash tank 415 and the evaporator 413.
The quasi-two-stage compression system with the flash tank is characterized in that the flash tank is connected with the first expansion valve, the air supply one-way valve and the second expansion valve respectively. Wherein the outlet of the first expansion valve is connected with the inlet of the flash tank, the gas outlet of the flash tank is connected with the inlet of the air-supplying one-way valve, and the liquid outlet of the flash tank is connected with the inlet of the second expansion valve. In addition, the outlet of the second expansion valve is connected with the inlet of the evaporator, and the inlet of the air supply one-way valve is connected with the air supply port of the compressor. After the high-temperature and high-pressure refrigerant vapor is condensed to a liquid phase in the condenser, the first expansion valve is used for throttling the high-temperature and high-pressure refrigerant liquid at the pipeline, the throttled refrigerant enters the flash tank in a gas-liquid two-phase state to perform gas-liquid phase separation, and gas-liquid phase concentration separation is performed at the same time. The gas-phase refrigerant directly enters the compression cavity under the action of pressure difference and is mixed with the refrigerant in the compressor while being compressed. And a second expansion valve is arranged between the flash tank and the evaporator. And after the liquid-phase refrigerants of the two systems flow out of the flash tank, the liquid-phase refrigerants enter a second expansion valve for secondary throttling to form a low-temperature and low-pressure refrigerant, the evaporator is arranged on the output outlet side of the flash tank, and the second expansion valve is arranged between the flash tank and the evaporator. The refrigerant in the evaporator absorbs heat and evaporates into a gas phase, and is sucked and compressed by the compressor.
Through the mode, the related physical data of the air conditioner and the liquid phase region refrigerant in the heat pump system are obtained. However, it should be noted that, due to the existence of the flash tank, the concentrations of the mixed refrigerant entering the flash tank and the mixed refrigerant of the gas phase and the liquid phase in the flash tank are different, and the concentrations of the mixed refrigerant in the evaporator and the condenser need to be tested at the same time in order to monitor the accurate operation state in the evaporator and the condenser. Preferably, the first test area is a pipeline from the outlet of the condenser to the inlet of the first expansion valve, and the measured physical data is physical data of the mixed refrigerant in the condenser; preferably, the second test area is a pipeline between the liquid phase outlet of the flash tank and the second expansion valve, and the measured physical data is physical data of the mixed refrigerant in the evaporator.
And the physical characteristic acquisition device in the binary or ternary mixed refrigerant concentration detection equipment is detachably connected with a pipeline between the flash tank and the second expansion valve.
Illustratively, a physical characteristic acquisition device is disposed in the conduit between the flash tank and the second expansion valve, where the mixed refrigerant is in a liquid state, for acquiring physical data of a target physical characteristic of the mixed refrigerant. Can dismantle the connection and can select the helicitic texture, the connection head between physics characteristic collection system and the pipeline of flash tank and second expansion valve can make helicitic texture, adds a nut groove of welding in the pipeline department that needs the connection, screws up physics characteristic collection system according to the threaded connection mode, if there is the pressure requirement, can twine the thread seal area at this threaded connection department, wipe the thread gluing and satisfy its pressure requirement.
Example 7
An embodiment of the present invention further provides a computer device, as shown in fig. 7, the computer device includes one or more processors 51 and a memory 52, and one processor 51 is taken as an example in fig. 6.
The computer device may further include: an input device 53 and an output device 54.
The processor 51, the memory 52, the input device 53, and the output device 54 may be connected by a bus or other means, and fig. 6 illustrates an example of a bus connection.
The processor 51 may be a Central Processing Unit (CPU). The Processor 51 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 52, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the binary or ternary mixed refrigerant concentration detection method in the embodiment of the present invention (for example, the first data acquisition module 21, the temperature acquisition module 22, the second data acquisition module 23, the determination module 24, and the like shown in fig. 2). The processor 51 executes various functional applications of the server and data processing by running non-transitory software programs, instructions and modules stored in the memory 52, that is, implements the binary or ternary mixed refrigerant concentration detection method described in the above method embodiment.
The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the binary or ternary mixed refrigerant concentration detection device, or the like. Further, the memory 52 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 52 may optionally include a memory remotely located from the processor 51, and these remote memories may be connected to the binary or ternary mixed refrigerant concentration detection device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 53 may receive a query request (or other numerical or character information) input by a user and generate key signal inputs related to user setting and function control of the binary or ternary mixed refrigerant concentration detecting device. The output device 54 may include a display device such as a display screen for outputting the calculation result.
The one or more modules are stored in the memory 52 and, when executed by the one or more processors 51, perform the method shown in fig. 1.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For details of the technology that are not described in detail in this embodiment, reference may be made to the related description in the embodiments shown in fig. 1 to 5.
Example 8
Embodiments of the present invention also provide a non-transitory computer storage medium having stored thereon computer-executable instructions that may perform the binary or ternary mixed refrigerant concentration detection method of any of the above method embodiments. The storage medium may be a magnetic Disk, an optical Disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a flash Memory (FlashMemory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (11)
1. A binary or ternary mixed refrigerant concentration detection method is characterized by comprising the following steps:
acquiring a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant, wherein the mixed refrigerant consists of two or three single working medium refrigerants;
acquiring the temperature and the pressure of the current mixed refrigerant;
acquiring a second group of physical data of each single working medium refrigerant corresponding to the physical characteristics under the temperature and/or the pressure;
and determining the concentrations of the components of the mixed refrigerant according to the first set of physical data and the second set of physical data.
2. The method of claim 1, wherein said determining concentrations of components of said mixed refrigerant based on said first set of physical data and said second set of physical data comprises:
and obtaining the mass ratio of each single working medium refrigerant in the mixed refrigerant according to the first group of physical data and the second group of physical data, and taking the mass ratio as the concentration of each component of the mixed refrigerant.
3. A binary or ternary mixed refrigerant concentration detection device is characterized by comprising:
the system comprises a first data acquisition module, a second data acquisition module and a data processing module, wherein the first data acquisition module is used for acquiring a first group of physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of a mixed refrigerant, and the mixed refrigerant consists of two or three single working medium refrigerants;
the acquisition module is used for acquiring the temperature and the pressure of the mixed refrigerant at present;
the second data acquisition module is used for acquiring a second group of physical data of each single working medium refrigerant corresponding to the physical characteristics under the temperature and the pressure;
and the determining module is used for determining the concentration of each component of the mixed refrigerant according to the first set of physical data and the second set of physical data.
4. A binary or ternary mixed refrigerant concentration detection apparatus, comprising:
the physical characteristic acquisition device is used for acquiring physical data corresponding to any one or two physical characteristics of the optical refractive index, the infrared spectrum and the density of the mixed refrigerant;
the temperature acquisition device is used for acquiring the temperature of the mixed refrigerant;
the pressure acquisition device is used for acquiring the pressure of the mixed refrigerant;
a controller comprising a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the binary or ternary mixed refrigerant concentration detection method according to claim 1 or 2.
5. The apparatus of claim 4, further comprising: a data interface for receiving physical data.
6. A mixed refrigerant concentration detection system, comprising:
the refrigeration equipment comprises a condenser, a first expansion valve, an evaporator and a compressor, wherein the condenser, the first expansion valve, the evaporator and the compressor contain mixed refrigerant;
the binary or ternary mixed refrigerant concentration detecting device according to claim 4 or 5.
7. The system of claim 6, wherein the physical characteristic collecting means of the mixed refrigerant concentration detecting apparatus is detachably connected to a pipe between the condenser and the first expansion valve.
8. The system of claim 6, further comprising a flash tank disposed on an output side of the first expansion valve, the evaporator disposed on an output side of the flash tank, a second expansion valve disposed between the flash tank and the evaporator.
9. The system of claim 8, wherein the physical characteristic collection device in the mixed refrigerant concentration detection apparatus is removably connected to the conduit between the flash tank and the second expansion valve.
10. A computer device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to cause the at least one processor to perform the binary or ternary mixed refrigerant concentration detection method of claim 1 or 2.
11. A computer-readable storage medium storing computer instructions for causing a computer to execute the binary or ternary mixed refrigerant concentration detection method according to claim 1 or 2.
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| CN114763951A (en) * | 2021-01-13 | 2022-07-19 | 约克（无锡）空调冷冻设备有限公司 | Detection device and refrigerating system comprising same |
| CN114763951B (en) * | 2021-01-13 | 2024-01-05 | 约克（无锡）空调冷冻设备有限公司 | Detection device and refrigerating system comprising same |
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