Industrial cooling water circulation regulation and control method based on digital twinning

Abstract

The invention provides an industrial cooling water circulation regulation and control method based on digital twinning, and the method comprises the steps: collecting a plurality of related parameters of an industrial cooling water circulation system in real time, building an energy consumption evaluation and optimization model according to the parameters, and building a system actual characteristic curve through the model. The actual characteristic curve of the system is compared with a preset standard curve of the system, so that the energy efficiency grade of the system is determined, and the effectiveness and efficiency of related working parameters of the industrial cooling water circulation system are further improved; the actual consumed power of the industrial cooling water circulation under different working conditions is compared with the preset requirement, so that the system can operate in the optimal state under different working conditions, and the working efficiency of the water circulation system is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial cooling water circulation control, and in particular to an industrial cooling water circulation control method based on digital twins. Background Art

[0002] Steel production requires necessary cooling of steel, and the quality of the cooling effect will directly affect the quality and efficiency of steel products. It has good competitiveness and application prospects for the accuracy and predictability of internal fault diagnosis of steel, saving labor costs, optimizing steel production energy and process structure, and improving the energy efficiency of the steel industry.

[0003] On the one hand, due to the working characteristics of industrial water circulation systems, they often involve multiple parameter data, and there is no relatively mature control method for industrial cooling water circulation systems in the prior art; on the other hand, industrial cooling water circulation systems often have complex operating conditions, involving various complex working conditions such as heat exchange and water supply and drainage. The adjustment priority of the actual operating parameters of the system under different working conditions has a great influence on the accuracy and effectiveness of the adjustment effect, and there is no relevant control method in the prior art.

[0004] Therefore, a new solution needs to be proposed to solve the defects and shortcomings in the above-mentioned prior art. Summary of the invention

[0005] In order to solve the defects and shortcomings in the prior art, the present invention provides an industrial cooling water circulation control method based on digital twin.

[0006] The technical solution provided by the present invention is: A method for regulating and controlling industrial cooling water circulation based on digital twins, characterized in that it comprises the following steps: S1: Establish energy consumption evaluation and optimization model according to the corresponding parameters of industrial cooling water circulation system; S2: Establishing the actual characteristic curve of the system in the energy consumption evaluation and optimization model, comparing the actual characteristic curve of the system with the preset standard curve of the system, judging whether the degree of deviation between the two meets the preset requirements, and proceeding to the next step when the judgment result is satisfied, and determining the energy efficiency level of the system according to the degree of deviation between the two, and proceeding to step S6 when the judgment result is not satisfied; S3: Under the heat exchange condition, determine whether the power consumed per unit heat exchange amount meets the preset requirement. If the determination result is satisfied, proceed to the next step. If not, proceed to step S6. S4: Under the water supply and drainage working condition, determine whether the power consumed per unit water supply and drainage volume meets the preset requirements. If and only if the determination result satisfies the requirements, proceed to the next step. If the determination result does not satisfy the requirements, proceed to step S6. S5: The system maintains normal operation; S6: Establish an industrial cooling water circulation control model, and make corresponding adjustments to the actual operating parameters of the system in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, until the judgment results in steps S2 to S4 meet the preset requirements.

[0007] As a further preferred embodiment of the present invention, in step S1, the corresponding parameters of the industrial cooling water circulation system at least include the speed, flow, pressure, temperature and circulation resistance of the circulating water.

[0008] As a further preferred embodiment of the present invention, in step S2, the water pump curve of the main power equipment is used as a preset standard curve of the system.

[0009] As a further preferred embodiment of the present invention, in step S2, The higher the degree of deviation, the lower the energy efficiency level of the determined system; The lower the deviation, the higher the energy efficiency level of the system is determined to be.

[0010] As a further preferred embodiment of the present invention, in step S3, when judging whether the power consumed per unit heat exchange meets the preset requirements, the actual output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes is compared with the preset output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes.

[0011] As a further preferred embodiment of the present invention, in step S4, when judging whether the power consumed per unit water supply and drainage volume meets the preset requirements, the actual power consumed per unit water supply and drainage volume at a selected time point or within a period of time is compared with the preset power consumed per unit water supply and drainage volume.

[0012] As a further preferred embodiment of the present invention, in step S6, when the judgment result in step S2 is not satisfied, 2.1) First adjust the speed and flow of circulating water; 2.2) Then adjust the pressure of the circulating water; 2.3) Finally, adjust the temperature and circulation resistance of the circulating water.

[0013] As a further preferred embodiment of the present invention, in step S6, when the judgment result in step S3 is not satisfied, 3.1) First adjust the temperature of the circulating water; 3.2) Adjust the speed and flow of circulating water; 3.3) Finally, adjust the circulating water pressure and circulation resistance.

[0014] As a further preferred embodiment of the present invention, in step S6, when the judgment result in step S4 is not satisfied, 4.1) First adjust the pressure and circulation resistance of the circulating water; 4.2) Adjust the speed and flow of circulating water; 4.3) Adjust the temperature of the circulating water first.

[0015] As a further preferred embodiment of the present invention, in step S6, when the actual operating parameters of the system are adjusted accordingly in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, the adjustment parameters corresponding to this adjustment process are collected, and the adjustment parameters of this adjustment process are sorted accordingly according to the quality of the adjustment effect, and the adjustment parameters corresponding to the next adjustment process are corrected according to the current adjustment parameters.

[0016] Compared with the prior art, the technical effects achieved by the present invention include: 1) The present invention provides an industrial cooling water circulation control method based on digital twins. It collects various relevant parameters of the industrial cooling water circulation system in real time, and establishes an energy consumption evaluation and optimization model based on them. The actual characteristic curve of the system is established through the model, and the actual characteristic curve of the system is compared with the preset standard curve of the system to determine the energy efficiency level of the system, thereby further improving the effectiveness and efficiency of the relevant working parameters of the industrial cooling water circulation system.

[0017] 2) The present invention provides an industrial cooling water circulation control method based on digital twins, which compares the actual power consumption under different working conditions of the industrial cooling water circulation with the preset requirements, thereby ensuring that the system can operate in the optimal state under various working conditions, thereby further improving the working efficiency of the water circulation system.

[0018] 3) The present invention provides an industrial cooling water circulation control method based on digital twins, which further improves the adjustment accuracy and effectiveness by adjusting the adjustment priority of the actual operating parameters of the water circulation system under various working conditions, thereby improving the operation efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention provides a schematic flow chart of the steps of the method.

[0020] Figure 2 It is a schematic diagram of the corresponding parameter acquisition process of the industrial cooling water circulation system of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] [First embodiment] like Figure 1-2 The first embodiment provided by the present invention is shown, and its specific technical solution discloses an industrial cooling water circulation control method based on digital twin, comprising the following steps: S1: Establishing an energy consumption evaluation and optimization model according to the corresponding parameters of the industrial cooling water circulation system; the corresponding parameters of the industrial cooling water circulation system mentioned in this embodiment at least include the speed, flow, pressure, temperature and circulation resistance of the circulating water. Since the speed, flow, pressure, temperature and circulation resistance of the circulating water in the water system determine the power of the power equipment in the circulating water system, it is necessary to establish an energy consumption evaluation and optimization model based on them as indicators; like Figure 2As shown, the acquisition of the corresponding parameters mentioned above can be achieved by installing corresponding sensing devices at corresponding positions, and the corresponding parameter data detected in real time by the corresponding sensing devices are transmitted to repeaters 1, 2, and finally n through wired transmission, and then transmitted to the server through wired transmission or wireless transmission. The central processor can perform fault diagnosis and online monitoring on the data transmitted to the server; S2: Establishing the actual characteristic curve of the system in the energy consumption evaluation and optimization model, comparing the actual characteristic curve of the system with the preset standard curve of the system, and judging whether the degree of deviation between the two meets the preset requirements. In this embodiment, the water pump curve of the main power equipment is used as the preset standard curve of the system to facilitate the subsequent power determination process; when the judgment result meets the requirements, proceed to the next step, and determine the energy efficiency level of the system according to the degree of deviation between the two, and when the judgment result does not meet the requirements, proceed to step S6; In this embodiment, the higher the degree of deviation, the greater the deviation from the preset standard curve, and the lower the energy efficiency level of the determined system; the lower the degree of deviation, the smaller the deviation from the preset standard curve, and the higher the energy efficiency level of the determined system. The determined system energy efficiency levels are collected and stored and then classified and managed, so as to facilitate configuration of different adjustment strategies for different system energy efficiency levels; S3: Under the heat exchange condition, determine whether the power consumed per unit heat exchange amount meets the preset requirement, and proceed to the next step when the determination result meets the preset requirement, and proceed to step S6 when the determination result does not meet the preset requirement; specifically, when determining whether the power consumed per unit heat exchange amount meets the preset requirement, compare the actual output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes with the preset output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes, so as to facilitate the real-time reading of the sensing device and the internal calculation process of the system; S4: Under the water supply and drainage working condition, determine whether the power consumed by the unit water supply and drainage volume meets the preset requirements. If and only if the determination result meets the requirements, proceed to the next step. If the determination result does not meet the requirements, proceed to step S6. Since the real-time drainage volume consumption under the water supply and drainage working condition is different at different times and the difference is large (for example, when the water supply and drainage is turned on and off and during the water supply and drainage process), when determining whether the power consumed by the unit water supply and drainage volume meets the preset requirements, the actual power consumed by the unit water supply and drainage volume at a selected time point or within a period of time can be compared with the preset power consumed by the unit water supply and drainage volume. The power consumed by the unit water supply and drainage volume at a selected time point or within a period of time can be selected for comparison, thereby further improving the accuracy and convenience of the comparison. S5: The system maintains normal operation; S6: Establish an industrial cooling water circulation control model, and adjust the actual operating parameters of the system in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, until the judgment results in steps S2 to S4 meet the preset requirements. Specifically, When the judgment result in step S2 is not satisfied, 2.1) First adjust the speed and flow of circulating water; 2.2) Then adjust the pressure of the circulating water; 2.3) Finally, adjust the temperature and circulation resistance of the circulating water; This is because the speed and flow of circulating water are often used as coordinate parameters in the external characteristic curve of the water pump, and they have the most direct impact on the linear shape of the actual characteristic curve of the system, so their adjustment priority at this time is the highest; and the pressure of circulating water affects the speed and flow of circulating water, so its adjustment priority at this time is also relatively high; and the temperature and circulation resistance of circulating water have relatively little impact on the linear shape of the actual characteristic curve of the system, so their adjustment priority is placed at the lowest; When the judgment result in step S3 is not satisfied, 3.1) First adjust the temperature of the circulating water; 3.2) Adjust the speed and flow of circulating water; 3.3) Finally, adjust the circulating water pressure and circulation resistance; This is because the power consumed per unit of heat exchange is directly related to the temperature of the circulating water. The lower the temperature of the circulating water, the more obvious the heat exchange effect. Therefore, the temperature regulation priority of the circulating water needs to be set to the highest. The speed and flow of the circulating water also have a certain impact on the heat exchange effect. Therefore, the speed and flow regulation priority of the circulating water are set to a relatively high level. The pressure and circulation resistance of the circulating water have a relatively low impact on the heat exchange effect. Therefore, their regulation priority is set to the lowest level. When the judgment result in step S4 is not satisfied, 4.1) First adjust the pressure and circulation resistance of the circulating water; 4.2) Adjust the speed and flow of circulating water; 4.3) First adjust the temperature of the circulating water; This is because the pressure and circulation resistance of the circulating water have the most direct impact on the unit water supply and drainage volume, so it is necessary to set its adjustment priority to the highest; the speed and flow of the circulating water also have a certain impact on the unit water supply and drainage volume, so it is also necessary to set its adjustment priority to a relatively high level; the temperature of the circulating water has a smaller impact on the unit water supply and drainage volume, so its adjustment priority can be set to the lowest; By adjusting the adjustment priority of the actual operating parameters of the water circulation system under various working conditions, the adjustment accuracy and effectiveness can be further improved, thereby improving the operating efficiency of the system.

[0026] As a further preference of this embodiment, when the actual operating parameters of the system are adjusted accordingly in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, the adjustment parameters corresponding to this adjustment process are collected, and the adjustment parameters of this adjustment process are sorted accordingly according to the quality of the adjustment effect, and the adjustment parameters corresponding to the next adjustment process are corrected according to the adjustment parameters of this time, so that the adjustment parameters corresponding to each adjustment process are corrected accordingly according to the quality of each adjustment effect through self-learning, so as to further improve the accuracy and efficiency of each adjustment.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for regulating and controlling industrial cooling water circulation based on digital twin, characterized in that: The following steps are involved: S1: Establish energy consumption evaluation and optimization model according to the corresponding parameters of industrial cooling water circulation system; S2: Establishing the actual characteristic curve of the system in the energy consumption evaluation and optimization model, comparing the actual characteristic curve of the system with the preset standard curve of the system, judging whether the degree of deviation between the two meets the preset requirements, and proceeding to the next step when the judgment result is satisfied, and determining the energy efficiency level of the system according to the degree of deviation between the two, and proceeding to step S6 when the judgment result is not satisfied; S3: Under the heat exchange condition, determine whether the power consumed per unit heat exchange amount meets the preset requirement. If the determination result is satisfied, proceed to the next step. If not, proceed to step S6. S4: Under the water supply and drainage working condition, determine whether the power consumed per unit water supply and drainage volume meets the preset requirements. If and only if the determination result satisfies the requirements, proceed to the next step. If the determination result does not satisfy the requirements, proceed to step S6. S5: The system maintains normal operation; S6: Establish an industrial cooling water circulation control model, and make corresponding adjustments to the actual operating parameters of the system in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, until the judgment results in steps S2 to S4 meet the preset requirements.

2. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In the step S1, the corresponding parameters of the industrial cooling water circulation system at least include the speed, flow, pressure, temperature and circulation resistance of the circulating water.

3. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In the step S2, the water pump curve of the main power equipment is used as the system preset standard curve.

4. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In the step S2, The higher the degree of deviation, the lower the energy efficiency level of the determined system; The lower the deviation, the higher the energy efficiency level of the system is determined to be.

5. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In step S3, when judging whether the power consumed per unit heat exchange meets the preset requirements, the actual output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes is compared with the preset output power of the water pump of the main power equipment of the cooling water circulation system when the unit temperature changes.

6. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In step S4, when judging whether the power consumed per unit water supply and drainage volume meets the preset requirement, the actual power consumed per unit water supply and drainage volume at a selected time point or within a period of time is compared with the preset power consumed per unit water supply and drainage volume.

7. The industrial cooling water circulation control method based on digital twin according to claim 2 is characterized in that: In step S6, when the judgment result in step S2 is not satisfied, 2.1) First adjust the speed and flow of circulating water; 2.2) Then adjust the pressure of the circulating water; 2.3) Finally, adjust the temperature and circulation resistance of the circulating water.

8. The industrial cooling water circulation control method based on digital twin according to claim 2 is characterized in that: In step S6, when the judgment result in step S3 is not satisfied, 3.1) First adjust the temperature of the circulating water; 3.2) Adjust the speed and flow of circulating water; 3.3) Finally, adjust the circulating water pressure and circulation resistance.

9. The industrial cooling water circulation control method based on digital twin according to claim 2 is characterized in that: In step S6, when the judgment result in step S4 is not satisfied, 4.1) First adjust the pressure and circulation resistance of the circulating water; 4.2) Adjust the speed and flow of circulating water; 4.3) Adjust the temperature of the circulating water first.

10. The industrial cooling water circulation control method based on digital twin according to claim 1 is characterized in that: In step S6, when the actual operating parameters of the system are adjusted accordingly in the industrial cooling water circulation control model according to the judgment results in steps S2 to S4, the adjustment parameters corresponding to this adjustment process are collected, and the adjustment parameters of this adjustment process are sorted accordingly according to the quality of the adjustment effect, and the adjustment parameters corresponding to the next adjustment process are corrected according to the current adjustment parameters.

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