A method for predicting the power saving rate of a belt conveyor

Abstract

The application relates to the field of power-saving test, in particular to a belt conveyor power-saving rate prediction method. In the application, a belt conveyor power-saving rate prediction method is provided, original power consumption data in an existing conveyor system is extracted, the power consumption data in the existing conveyor system is input into an experimental test system by building the experimental test system, upgraded power consumption data is obtained, and the power-saving rate after the upgrading and reconstruction of the conveyor system is obtained by comparison. The method can effectively predict the power-saving rate after the upgrading and reconstruction of the conveyor system, is favorable for popularization and application of power-saving equipment, and provides a reference for the upgrading and reconstruction of the conveyor system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power saving test, in particular to a belt conveyor power saving rate prediction method. BACKGROUND

[0002] At present, the new transmission mode such as permanent magnet motor replaces the traditional asynchronous motor and speed reducer, which is an important technical means to realize the power saving and consumption reduction of mine belt conveyor equipment, and is a powerful support to realize the "double carbon" target of coal, building materials and metallurgy industries. Before and after the transformation, customers urgently need to understand the expected level of power saving effect and the actual test results of power saving effect after the transformation of permanent magnet motor, as the evaluation basis for project approval and economic benefit return. The current common power saving test method of conveyor system mainly includes: first, comparing the actual power consumption data before and after the upgrade of the conveyor to calculate the power saving rate. However, for upgraded projects, the power consumption after upgrading cannot be accurately known in advance before the project is implemented; second, according to the simple comparison of the rated capacity of the conveyor and the rated working efficiency of the driving system before and after the upgrade, since the actual running condition of the conveyor cannot be completely consistent with the rated condition, and is affected by factors such as uneven incoming material, the deviation is relatively large, resulting in a difference between the prediction and the actual situation. The traditional test method cannot accurately calculate the power saving benefit that the customer can actually get after the upgrade, which affects the popularization and application of power saving equipment such as permanent magnet motor. Therefore, it is necessary to provide an accurate belt conveyor power saving rate prediction method. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a belt conveyor power saving rate prediction method, which extracts the original power consumption data in the existing conveyor system, inputs the power consumption data in the existing conveyor system into the experimental test system by building an experimental test system, obtains the power consumption data after upgrading, and obtains the power saving rate of the conveyor system after upgrading by comparison. Through this method, the power saving rate of the conveyor system after upgrading can be effectively predicted, which is beneficial to the popularization and application of power saving equipment, and provides a reference for the upgrading of the conveyor system.

[0004] Further, the experimental test system comprises a test base, a loading machine arranged on the test base for providing driving, a tested machine arranged on the test base and having an electric control device, and a test computer, wherein the electric control device of the tested machine is further provided with an electric meter.

[0005] Further, the belt conveyor power saving rate prediction method comprises the following steps: S1: extracting the cumulative capacity T0, the cumulative power Q0, the real-time running speed V0 and the running active power P0 of the existing conveyor system in a unit time period; S2: dividing the running active power P0 into n-1 intervals, wherein n is a natural number greater than 1, so as to obtain P1=P0 / n, P2=2P0 / n……P n-1= (n-1) P0 / n, P n = P0, by which n intervals are (0, P0), (P0, P1)……(P n-1 , P n ); S3: statistics of running time of each interval section, respectively recorded as t1, t2……t n , the running time is reduced m times to obtain t 11 , t 21 ……t n1 ; S4: respectively, the active power p1, P2……P n is input into the test computer according to the corresponding running time t 11 , t 21 ……t n1 , the test computer controls the operation of the loading machine, and the operation time is the corresponding running time;

[0006] S5: after the operation of step S4, the total power Q1 is read from the power meter of the tested machine, and the total power Q2 of the simulated upgraded conveyor system is obtained by expanding m times; S6: according to the data in step S1, the power consumption H1 of the existing conveyor system is Q0 / T0, and according to the data in step S5, the power consumption H2 of the simulated conveyor system is Q2 / T0; S7: according to step S6, the predicted power saving rate of the existing conveyor system after upgrading is: .

[0007] Further, the loading machine is the same type of device as in the existing conveyor system, and has a power generation feedback function.

[0008] Further, the test computer internally stores a program for executing the belt conveyor power saving rate prediction method.

[0009] Further, the tested machine is a driving device to be upgraded.

[0010] The belt conveyor power saving rate prediction method in the application can predict the upgraded conveyor belt according to the existing conveyor system parameters. The system and method are simple, easy to operate, fast and convenient, which is beneficial to the popularization and application of power saving equipment, and provides a reference for the upgrading of the conveyor system, and has great application and promotion significance. BRIEF DESCRIPTION OF DRAWINGS

[0011] The above and other objects and advantages of the present application will become more complete and clear from the following detailed description taken in conjunction with the accompanying drawings, in which the same or similar elements are denoted by the same reference numerals.

[0012] Figure 1 is a schematic diagram of the experimental test system of the application.

[0013] Label description: 1-test base, 2-load machine, 3-test machine, 4-test computer, wherein the measured 5-electric control device, 6-electric meter. Embodiment

[0014] The advantages and features of the present application will become more apparent with the description. However, these examples are only exemplary and do not constitute any limitation on the scope of the present application. Those skilled in the art should understand that the details and forms of the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application, and such modifications and replacements fall within the protection scope of the present application.

[0015] As Figure 1 shown, the present application provides a belt conveyor power saving rate prediction method, extracts the original power consumption data in the existing conveyor system, inputs the power consumption data in the existing conveyor system into the experimental test system by building an experimental test system, obtains the power consumption data after upgrading and modification, and obtains the power saving rate after upgrading and modification of the conveyor system by comparison. Through this method, the power saving rate after upgrading and modification of the conveyor system can be effectively predicted, which is beneficial to the popularization and application of power saving equipment, and provides a reference for the upgrading and modification of the conveyor system.

[0016] As Figure 1 shown, the experimental test system comprises: a test base 1, a loading machine 2 provided on the test base for providing driving, a test machine 3 provided on the test base and having an electric control device, a test computer 4, wherein the electric control device 5 of the test machine is further provided with an electric meter 6.

[0017] In this embodiment, the belt conveyor power saving rate prediction method comprises the following steps: step one: extracting the cumulative transport volume T0, cumulative power Q0, conveyor real-time running speed V0 and running active power P0 in a unit time period from the existing conveyor system, wherein the unit time period can be one year, one quarter or one month according to the use of the specific conveyor.

[0018] Step two: divide the running active power P0 into n-1 intervals, wherein n is a natural number greater than 1, so that P1=P0 / n, P2=2P0 / n……P n-1 =(n-1) P0 / n, P n = P0, so that n intervals are (0, P0), (P0, P1)……(P n-1 , P n ); the purpose is to better measure the accuracy of power saving rate, and divide the running active power into several intervals, which is beneficial to finding the running power segment with the most time proportion, and according to the needs of customers, repeatedly test the power segment to provide a reference for subsequent optimal power saving design.

[0019] Step three: count the running time of each interval, respectively recorded as t1, t2……t n , t 11 , t 21 ……t n1 ; Because the running time of the existing conveyor system is long, such as one year or one quarter, but the experimental time cannot be too long in the actual test process, because the experimental time is shortened in this way, and effective evaluation can also be carried out.

[0020] S4: respectively, the active power p1, P2……P n According to the corresponding running time t 11 , t 21 ……t n1 , input test computer, test computer control loading machine operation, operation time is the corresponding running time; S5: after running step S4, read the total power Q1 from the power meter of the tested machine, and Q1 is enlarged m times to obtain the total power Q2 of the simulated upgraded conveyor system; Because the experiment is continuous, the value directly read from the power meter is the total power in the entire test time, and according to step three, Q1 is converted into Q2, which is the total power of the upgraded conveyor system.

[0021] Step six: according to the data in step S1, the power consumption H1 of the existing conveyor system is Q0 / T0, and according to the data in step S5, the power consumption H2 of the simulated conveyor system is Q2 / T0; S7: according to step S6, the predicted power saving rate of the existing conveyor system after upgrading is: .

[0022] In this embodiment, the loading machine is the same type of device as the existing conveyor system, which has a power generation feedback function. The test computer internally stores a program for executing the belt conveyor power saving rate prediction method. The tested machine is the driving device used for upgrading.

[0023] Compared with the prior art, the belt conveyor power saving rate prediction method has the following beneficial effects: the belt conveyor power saving rate prediction method can predict the upgraded conveyor belt according to the parameters of the existing conveyor system, the system and method are simple, easy to operate, fast and convenient, which is beneficial to the popularization and application of power saving equipment, and provides reference for the upgrading of the conveyor system, and has great application and popularization significance.

[0024] The embodiments in the above examples can be further combined or replaced, and the examples only describe the preferred embodiments of the present application, and do not limit the concept and scope of the present application. Without departing from the design idea of the present application, various changes and improvements of the technical solutions of the present application made by the skilled in the art all belong to the protection scope of the present application.

Claims

1. A method for predicting the energy saving rate of a belt conveyor, characterized in that: The original power consumption data of the existing conveyor system is extracted. By building an experimental testing system, the power consumption data of the existing conveyor system is input into the experimental testing system to obtain the power consumption data after the upgrade and transformation. By comparison, the power saving rate of the upgraded conveyor system is obtained. The experimental testing system includes: a test base, a loader mounted on the test base for providing drive, a test machine with an electronic control device mounted on the test base, and a test computer, wherein the electronic control device of the test machine also contains a power meter; the steps are as follows: S1: Extract the cumulative transport volume T0, cumulative power consumption Q0, real-time operating speed V0, and operating active power P0 within a unit time period from the existing conveyor system; S2: Divide the operating active power P0 into n-1 intervals, where n is a natural number greater than 1, and we can obtain P1=P0 / n, P2=2P0 / n……P n-1 =(n-1) P0 / n,P n = P0, from which we can obtain n intervals respectively (0, P0), (P0, P1)...(P... n-1 P n ); S3: Calculate the running time for each interval, denoted as t1, t2, ..., t. n Reducing the runtime by a factor of m yields t. 11 t 21 ...t n1 ; S4: Convert the active power p1, P2...P of each interval segment respectively. n According to their respective running times t 11 t 21 ...t n1 Input the test computer, which controls the loader to run. The running time is the corresponding runtime. S5: After running step S4, read the total power consumption Q1 from the power meter of the machine under test, and multiply Q1 by m to obtain the total power consumption Q2 of the conveyor system after the simulated upgrade. S6: According to the data in step S1, the power consumption of the existing conveyor system is H1 = Q0 / T0, and according to the data in step S5, the power consumption of the simulated conveyor system is H2 = Q2 / T0. S7: Based on step S6, the predicted energy saving rate of the existing conveyor system after upgrading and modification is: .

2. The method for predicting the energy saving rate of a belt conveyor according to claim 1, characterized in that: The loader is the same model as the existing conveyor system and has a power generation feedback function.

3. The method for predicting the energy saving rate of a belt conveyor according to claim 2, characterized in that: The test computer contains a program that executes a method for predicting the energy saving rate of a belt conveyor.

4. The method for predicting the energy saving rate of a belt conveyor according to claim 3, characterized in that: The machine under test is a drive unit that is to be upgraded and modified.

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