CN110686725B - Coil heating performance monitoring system and method and storage medium - Google Patents
Coil heating performance monitoring system and method and storage medium Download PDFInfo
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Abstract
The invention relates to a monitoring system, a monitoring method and a storage medium for heating performance of a coil pipe, wherein the monitoring system comprises the following components: calculating the air side heat load Qa of the coil; calculating the water side heat load Qs of the coil pipe; calculating the actual average heat load Qt of the coil according to the air side heat load and the water side heat load of the coil; acquiring the ratio of the actual average heat load Qt of the coil to the design average heat load RQt, namely the heat load ratio; and judging the heating performance condition of the coil according to the heat load ratio, and controlling the color of the three-color breathing lamp to flicker according to the judgment result. According to the invention, the heating performance of the coil is automatically judged by establishing a system for judging the heating performance of the coil by calculating the ratio of the actual average heat load of the coil to the designed average heat load and formulating the judgment standard according to the heat load ratio, so that some misjudgment conditions caused by manual judgment can be avoided, some burden can be reduced for engineers, the practical efficiency of the coil can be increased to a certain extent, and the service life of the coil can be prolonged.
Description
Technical Field
The invention relates to the field of coil pipes, in particular to a coil pipe heating performance monitoring system and method and a storage medium.
Background
The heating performance and the heating capacity of the heating coil are key indexes for evaluating whether the coil equipment meets the design requirements. After the air conditioner system is installed and operated, the fins of the coil pipe can be accumulated with dust and corroded, and the fins of the coil pipe can be scaled and corroded, so that the thermal resistance can be increased, and the heating performance is reduced. Therefore, the thermal performance test is carried out on the coil pipe regularly, reasonable evaluation can be carried out on the heating performance of the coil pipe, the operating condition of the coil pipe can be supported and held according to the operating condition, scientific data is provided for normal operation management of a nuclear power plant, and normal operation of the system is guaranteed.
The heating performance detection of the heating coil pipe at present usually depends on the regular investigation of a skilled engineer, and whether a problem occurs is judged through experience, although the detection effect is not good, the number of people of the skilled engineer is not large, and the judgment result is not accurate enough due to the interference factors of more or less individuals by adopting manpower and through experience judgment.
The current market urgently needs a monitoring system and a monitoring method aiming at the heating performance of the coil, and the heating performance of the coil can be automatically judged by calculating the ratio of the actual average heat load of the coil to the designed average heat load and formulating a judgment standard according to the heat load ratio.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a coil heating performance monitoring system, a coil heating performance monitoring method and a storage medium.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coil heating performance monitoring system is provided, comprising:
an air volume flow rate measuring unit for measuring an air volume flow rate Gt on the air side of the coil;
a water flow measuring unit for measuring a water flow Gs on the water side of the coil;
an air density measuring unit for measuring an air density ρ of the air side of the coil;
the air outlet and inlet temperature difference measuring module comprises an air inlet temperature measuring unit and an air outlet temperature measuring unit, and is used for acquiring the temperature difference delta Tf of the air outlet and the air inlet;
the water inlet and outlet temperature difference measuring module comprises a water inlet temperature measuring unit and a water outlet temperature measuring unit, and is used for acquiring a water inlet and outlet temperature difference delta Tw;
the three-color breathing lamp is used for feeding back a heating performance detection result of the coil pipe;
a processing module, the processing module comprising:
a gas-side heat load calculation unit for calculating a gas-side heat load Qa of the coil;
a water side heat load calculation unit for calculating a water side heat load Qs of the coil at a single eye;
the actual average heat load calculation unit is used for calculating the actual average heat load Qt of the coil;
a heat duty ratio calculation unit for calculating the ratio of the actual average heat duty Qt of the coil to the design average heat duty RQt.
Further, the three-color breathing lamp comprises three colors of red, yellow and green.
Further, the three-color breathing lamp is arranged on one side wall of the coil pipe.
The invention also provides a coil heating performance monitoring method, which is applied to the coil heating performance monitoring system and comprises the following steps:
calculating the air side heat load Qa of the coil;
calculating the water side heat load Qs of the coil pipe;
calculating the actual average heat load Qt of the coil according to the air side heat load and the water side heat load of the coil;
acquiring the ratio of the actual average heat load Qt of the coil to the design average heat load RQt, namely the heat load ratio;
and judging the heating performance condition of the coil according to the heat load ratio, and controlling the color of the three-color breathing lamp to flicker according to the judgment result.
Further, the method for calculating the air side heat load Qa of the coil comprises the following steps:
obtaining the temperature Tg of the air inlet on the air side of the coil1And the temperature Tg of the air outlet2Calculating the temperature difference between the inlet and the outlet of the air, delta Tf which is Tg2-Tg1；
Acquiring air volume flow Gt;
the air-side thermal load Qa is calculated to be Cp × Gt × ρ × Δ Tf ÷ 3600,
wherein Cp is 1.01kW/(kg DEG C) of specific heat of air, and rho is 1.273kg/m of air density3。
Further, the method for calculating the water side heat load Qs of the coil comprises the following steps:
obtaining temperature T of water side water inlet of coil1And the temperature T of the water outlet2Calculating to obtain the temperature difference delta Tw between the water inlet and the water outlet, wherein the delta Tw is T1-T2；
Acquiring the water side flow Gs of the coil pipe;
the water side thermal load Qs is calculated as Gs × Δ Tw × C ÷ 3.6,
wherein C is the specific heat capacity of water which is 4.2 kW/(kg. DEG C).
Further, the calculation method of the actual average heat load Qt of the coil is as follows:
continuously calculating to obtain a gas side thermal load data set (Qa)i，Qa2…QanGet Qamax＝MAX{Qa1，Qa2…QanGet Qamin＝MIN{Qa1，Qa2…Qan}, then
Continuously calculating to obtain a water side heat load data set (Qs)1，Qs2…QsnGet Qsmax＝MAX{Qs1，Qs2…QsnGet Qsmin＝MIN{Qs1，Qs2…Qsn}, then
Average thermal load
Further, the three-color breathing lamp comprises three colors of red, yellow and green,
when the thermal load ratio is more than or equal to 90%, judging that the heating performance of the coil pipe is qualified, and correspondingly flashing green lamps of the three-color breathing lamps;
when the thermal load ratio is 85 percent to 90 percent, judging that the heating performance of the coil pipe is insufficient, cleaning fins of a heater of the coil pipe, and correspondingly flashing yellow lamps of the three-color breathing lamps;
and when the heat load ratio is less than or equal to 85%, judging that the heating performance of the coil pipe is unqualified, and correspondingly flashing red lamps of the three-color breathing lamp.
Further, the processing module controls the three-color breathing and the like to flicker, and meanwhile generates a log file, wherein the log file comprises the following information: the current time, the thermal load ratio of the coil, and the performance state the coil is in.
A computer-readable storage medium is also proposed, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 4 to 9.
The invention has the beneficial effects that:
according to the invention, the heating performance of the coil is automatically judged by establishing a system for judging the heating performance of the coil by calculating the ratio of the actual average heat load of the coil to the designed average heat load and formulating the judgment standard according to the heat load ratio, so that some misjudgment conditions caused by manual judgment can be avoided, some burden can be reduced for engineers, the practical efficiency of the coil can be increased to a certain extent, and the service life of the coil can be prolonged.
Drawings
FIG. 1 is a flow chart of a coil heating performance monitoring method according to the present invention.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
Referring to fig. 1, the present invention provides a coil heating performance monitoring system, including:
an air volume flow rate measuring unit for measuring an air volume flow rate Gt on the air side of the coil;
a water flow measuring unit for measuring a water flow Gs on the water side of the coil;
an air density measuring unit for measuring an air density ρ of the air side of the coil;
the air outlet and inlet temperature difference measuring module comprises an air inlet temperature measuring unit and an air outlet temperature measuring unit, and is used for acquiring the temperature difference delta Tf of the air outlet and the air inlet;
the water inlet and outlet temperature difference measuring module comprises a water inlet temperature measuring unit and a water outlet temperature measuring unit, and is used for acquiring a water inlet and outlet temperature difference delta Tw;
the three-color breathing lamp is used for feeding back a heating performance detection result of the coil pipe;
a processing module, the processing module comprising:
a gas-side heat load calculation unit for calculating a gas-side heat load Qa of the coil;
a water side heat load calculation unit for calculating a water side heat load Qs of the coil at a single eye;
the actual average heat load calculation unit is used for calculating the actual average heat load Qt of the coil;
a heat duty ratio calculation unit for calculating the ratio of the actual average heat duty Qt of the coil to the design average heat duty RQt.
As a preferred embodiment of the present scheme, the three-color breathing lamp comprises three colors of red, yellow and green.
As a preferred embodiment of this scheme, the lamp is breathed to the tristimulus setting on one side wall of coil pipe. The three-color breathing lamp is arranged on the wall around the coil pipe, so that the condition of the heating performance of the coil pipe, which is easier for a worker, can be mastered, and the three-color breathing lamp is very convenient.
The invention also provides a coil heating performance monitoring method, which is applied to the coil heating performance monitoring system and comprises the following steps:
calculating the air side heat load Qa of the coil;
calculating the water side heat load Qs of the coil pipe;
calculating the actual average heat load Qt of the coil according to the air side heat load and the water side heat load of the coil;
acquiring the ratio of the actual average heat load Qt of the coil to the design average heat load RQt, namely the heat load ratio;
and judging the heating performance condition of the coil according to the heat load ratio, and controlling the color of the three-color breathing lamp to flicker according to the judgment result.
As a preferred embodiment of this aspect, the method of calculating the air-side heat load Qa of the coil includes:
obtaining the temperature Tg of the air inlet on the air side of the coil1And the temperature Tg of the air outlet2Calculating the temperature difference between the inlet and the outlet of the air, delta Tf which is Tg2-Tg1；
Acquiring air volume flow Gt;
the air-side thermal load Qa is calculated to be Cp × Gt × ρ × Δ Tf ÷ 3600,
wherein Cp isAir specific heat of 1.01 kW/(kg. DEG C.), rho is air density of 1.273kg/m3。
As a preferred embodiment of this aspect, the method of calculating the water side heat load Qs of the coil includes:
obtaining temperature T of water side water inlet of coil1And the temperature T of the water outlet2Calculating to obtain the temperature difference delta Tw between the water inlet and the water outlet, wherein the delta Tw is T1-T2；
Acquiring the water side flow Gs of the coil pipe;
the water side thermal load Qs is calculated as Gs × Δ Tw × C ÷ 3.6,
wherein C is the specific heat capacity of water which is 4.2 kW/(kg. DEG C).
As a preferred embodiment of this embodiment, the calculation method of the actual average heat load Qt of the coil is:
continuously calculating to obtain a gas side thermal load data set (Qa)1，Qa2…QanGet Qamax＝MAX{Qa1，Qa2…QanGet Qamin＝MIN{Qa1，Qa2…Qan}, then
Continuously calculating to obtain a water side heat load data set (Qs)1，Qs2…QsnGet Qsmax＝MAX{Qs1，Qs2…QsnGet Qsmin＝MIN{Qs1，Qs2…Qsn}, then
Average thermal load
In the implementation, aiming at the system, the coil heating performance test is carried out by adopting the method, and the test result is shown in the table I:
watch 1
In the first table, the design condition index of each index is a theoretical value obtained by checking an engineering table and a natural law, the test result is an actual value obtained by a specific test, and the test result is qualified when the error between the test value obtained by the specific test and the theoretical value is within 3 percent.
The heating performance of the coil pipe to be tested is found to be qualified through specific tests shown in the table I, so that the green lamp of the three-color breathing lamp correspondingly flickers, and the test is finished.
As a preferred embodiment of the scheme, the three-color breathing lamp comprises three colors of red, yellow and green, the test result is visually fed back by adopting the three-color breathing lamp, the color representing the health meaning of green is set as a qualified representation color by combining the habits of people, the color representing a certain warning degree of yellow is set as a representation color with insufficient heating performance of the coil, and the color representing a strong warning degree of red is set as a representation color with unqualified heating performance of the coil.
When the thermal load ratio is more than or equal to 90%, judging that the heating performance of the coil pipe is qualified, and correspondingly flashing green lamps of the three-color breathing lamps;
when the thermal load ratio is 85 percent to 90 percent, judging that the heating performance of the coil pipe is insufficient, cleaning fins of a heater of the coil pipe, and correspondingly flashing yellow lamps of the three-color breathing lamps;
and when the heat load ratio is less than or equal to 85%, judging that the heating performance of the coil pipe is unqualified, and correspondingly flashing red lamps of the three-color breathing lamp.
As a preferred embodiment of this aspect, the processing module generates a log file while controlling the three-color breathing and the like to blink, the log file including the following information: the current time, the thermal load ratio of the coil, and the performance state the coil is in. According to the scheme, an engineer can conveniently summarize and analyze the working condition of the coil pipe in the future by generating the log file.
A computer-readable storage medium is also proposed, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 4 to 9.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium and can implement the steps of the above-described method embodiments when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
While the present invention has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed as effectively covering the intended scope of the invention by providing a broad, potential interpretation of such claims in view of the prior art with reference to the appended claims. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalent modifications thereto.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (8)
1. A coil heating performance monitoring system, comprising:
an air volume flow rate measuring unit for measuring an air volume flow rate Gt on the air side of the coil;
a water flow measuring unit for measuring a water flow Gs on the water side of the coil;
an air density measuring unit for measuring an air density ρ of the air side of the coil;
the air outlet and inlet temperature difference measuring module comprises an air inlet temperature measuring unit and an air outlet temperature measuring unit, and is used for acquiring the temperature difference delta Tf of the air outlet and the air inlet;
the water inlet and outlet temperature difference measuring module comprises a water inlet temperature measuring unit and a water outlet temperature measuring unit, and is used for acquiring a water inlet and outlet temperature difference delta Tw;
the three-color breathing lamp is used for feeding back a heating performance detection result of the coil pipe;
a processing module, the processing module comprising:
a gas-side heat load calculation unit for calculating a gas-side heat load Qa of the coil;
a water side heat load calculation unit for calculating a water side heat load Qs of the coil;
the actual average heat load calculation unit is used for calculating the actual average heat load Qt of the coil;
a heat load ratio calculation unit for calculating the ratio of the actual average heat load Qt of the coil to the design average heat load RQt;
the three-color breathing lamp comprises three colors of red, yellow and green,
when the thermal load ratio is more than or equal to 90%, judging that the heating performance of the coil pipe is qualified, and correspondingly flashing green lamps of the three-color breathing lamps;
when the thermal load ratio is 85 percent to 90 percent, judging that the heating performance of the coil pipe is insufficient, cleaning fins of a heater of the coil pipe, and correspondingly flashing yellow lamps of the three-color breathing lamps;
and when the heat load ratio is less than or equal to 85%, judging that the heating performance of the coil pipe is unqualified, and correspondingly flashing red lamps of the three-color breathing lamp.
2. The coil heating performance monitoring system of claim 1, wherein the tri-colored breathing light is disposed on a sidewall of the coil.
3. A coil heating performance monitoring method, applied to the system as claimed in claim 1 or 2, comprising the following:
calculating the air side heat load Qa of the coil;
calculating the water side heat load Qs of the coil pipe;
calculating the actual average heat load Qt of the coil according to the air side heat load and the water side heat load of the coil;
acquiring the ratio of the actual average heat load Qt of the coil to the design average heat load RQt, namely the heat load ratio;
judging the heating performance condition of the coil according to the heat load ratio, and controlling the color of the three-color breathing lamp to flicker according to the judgment result;
the three-color breathing lamp comprises three colors of red, yellow and green,
when the thermal load ratio is more than or equal to 90%, judging that the heating performance of the coil pipe is qualified, and correspondingly flashing green lamps of the three-color breathing lamps;
when the thermal load ratio is more than 85% and less than 90%, judging that the heating performance of the coil pipe is insufficient, cleaning fins of a heater of the coil pipe, and correspondingly flashing yellow lamps of the three-color breathing lamp;
and when the heat load ratio is less than or equal to 85%, judging that the heating performance of the coil pipe is unqualified, and correspondingly flashing red lamps of the three-color breathing lamp.
4. A method of monitoring the heating performance of a coil as set forth in claim 3, wherein said method of calculating the air side heat load Qa of the coil includes:
obtaining the temperature Tg of the air inlet on the air side of the coil1And the temperature Tg of the air outlet2Calculating the temperature difference between the inlet and the outlet of the air, delta Tf which is Tg2-Tg1；
Acquiring air volume flow Gt;
the air-side thermal load Qa is calculated to be Cp × Gt × ρ × Δ Tf ÷ 3600,
wherein Cp is 1.01kW/(kg DEG C) of specific heat of air, and rho is 1.273kg/m of air density3。
5. A method of monitoring the heating performance of a coil as set forth in claim 3, wherein said method of calculating the water side heat load Qs of the coil comprises:
acquiring the temperature T1 of a water inlet on the water side of the coil and the temperature T2 of a water outlet, and calculating to obtain the temperature difference delta Tw between the water inlet and the water outlet, wherein the delta Tw is T1-T2；
Acquiring the water side flow Gs of the coil pipe;
the water side thermal load Qs is calculated as Gs × Δ Tw × C ÷ 3.6,
wherein C is the specific heat capacity of water which is 4.2 kW/(kg. DEG C).
6. A method as claimed in claim 3, wherein the actual average heat load Qt of said coil is calculated by:
continuously calculating to obtain a gas side thermal load data set (Qa)1，Qa2...QanGet Qamax＝MAX{Qa1，Qa2...QanGet Qamin＝MIN{Qa1，Qa2...Qan}, then
Continuously calculating to obtain a water side heat load data set (Qs)1，Qs2...QsnGet Qsmax＝MAX{Qs1，Qs2...QsnGet Qsmin＝MIN{Qs1，Qs2...Qsn}, then
Average thermal load
7. The method of claim 3, wherein the processing module generates a log file while controlling the tri-color breathing lamp to flash, wherein the log file contains the following information: the current time, the thermal load ratio of the coil, and the performance state the coil is in.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 3-7.
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