Method and device for verifying the accuracy of gas consumption meter for pneumatic ash conveying

Abstract

The present invention proposes a method and device for verifying the accuracy of a pneumatic ash conveying gas consumption meter. The method comprises: obtaining the ash conveying energy required under actual pneumatic ash conveying conditions, as well as the actual gas pressure and pipeline differential pressure within a closed pipeline; determining the theoretical gas consumption using the ash conveying energy, actual gas pressure, and pipeline differential pressure; obtaining the actual gas consumption measured by the pneumatic ash conveying gas consumption meter to be tested; and determining the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical and measured gas consumption. This method can quickly and accurately verify the metering accuracy of the pneumatic ash conveying gas consumption meter in an ash conveying system.

Description

Technical Field

[0001] The present invention relates to the technical field of steel casting, and in particular to a method and a device for verifying the accuracy of a pneumatic ash conveying and gas consumption meter. Background Art

[0002] Pneumatic ash conveying, also known as airflow conveying, utilizes the energy of airflow to transport granular materials along the airflow within a closed pipeline. It is a specific application of fluidization technology. Pneumatic conveying devices have a simple structure and are easy to operate, capable of conveying materials horizontally, vertically, or at an angle. The primary energy sources for conveying ash are nitrogen and compressed air. Currently, ash conveying is primarily achieved by manually estimating conveying capacity and pipeline diameter, then introducing nitrogen or compressed air. However, due to the inability to verify the accuracy of existing pneumatic ash conveying gas consumption meters, the gas conveyed cannot be accurately measured, making it difficult to effectively assess the rationality of energy consumption. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention proposes a method and device for verifying the accuracy of the pneumatic ash conveying gas consumption meter, which can quickly and accurately verify the metering accuracy of the pneumatic ash conveying gas consumption meter of the ash conveying system.

[0004] In order to achieve the above object, the present invention provides a method for verifying the accuracy of a gas consumption meter for pneumatic ash conveying, comprising:

[0005] Obtain the ash conveying energy required under actual pneumatic ash conveying conditions, as well as the actual gas pressure in the closed pipeline and the pipeline differential pressure;

[0006] The theoretical gas consumption is determined using the ash transport energy, the actual gas pressure and the pipeline differential pressure;

[0007] Obtain the actual gas consumption measured by the gas consumption instrument for pneumatic ash conveying to be tested;

[0008] The accuracy of the pneumatic ash conveying gas consumption meter is determined based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0009] Optionally, the determining of theoretical gas consumption by using the ash transport energy, the actual gas pressure and the pipeline differential pressure includes:

[0010]

[0011] Among them, Q consumption represents the ash conveying gas consumption per hour, E represents the ash conveying energy, that is, the energy required for ash conveying; P represents the actual gas pressure, △P represents the pipeline differential pressure, and K represents the entrainment coefficient.

[0012] Optionally, the accuracy verification method of the pneumatic ash conveying gas consumption meter further includes:

[0013] Obtain the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume under actual pneumatic ash conveying conditions;

[0014] The ash conveying energy is determined using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount.

[0015] Optionally, determining the ash conveying energy by using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount includes:

[0016] E=m 灰 ×g×(H+L×μ)

[0017] Among them, m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, and μ represents the friction coefficient of the pipeline.

[0018] Another aspect of the present invention provides a device for verifying the accuracy of a gas consumption meter for pneumatic ash conveying, comprising:

[0019] An acquisition module is used to obtain the ash conveying energy required under actual pneumatic ash conveying conditions, as well as the actual gas pressure in the closed pipeline and the pipeline differential pressure; and

[0020] Obtain the actual gas consumption measured by the gas consumption instrument for pneumatic ash conveying to be tested;

[0021] a theoretical gas consumption determination module, configured to determine the theoretical gas consumption using the ash transport energy, the actual gas pressure, and the pipeline differential pressure;

[0022] The verification module is used to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0023] Optionally, the determining of theoretical gas consumption by using the ash transport energy, the actual gas pressure and the pipeline differential pressure includes:

[0024]

[0025] Among them, Q consumption represents the ash conveying gas consumption per hour, E represents the ash conveying energy, that is, the energy required for ash conveying; P represents the actual gas pressure, △P represents the pipeline differential pressure, and K represents the entrainment coefficient.

[0026] Optionally, the acquisition module is further used to obtain the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume under actual pneumatic ash conveying conditions;

[0027] The ash conveying energy is determined using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount.

[0028] Optionally, determining the ash conveying energy by using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount includes:

[0029] E=m 灰 ×g×(H+L×μ)

[0030] Among them, m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, and μ represents the friction coefficient of the pipeline.

[0031] Optionally, the acquisition module is a module stored in the EMS data system;

[0032] The EMS data system is used to store the ash conveying energy required under actual pneumatic ash conveying conditions, the actual gas pressure in the closed pipeline and the pipeline differential pressure; and the actual gas consumption measured by the pneumatic ash conveying gas consumption instrument to be tested.

[0033] Optionally, the theoretical gas consumption determination module and verification module are submodules stored in the main control system.

[0034] The main control system is used to control the theoretical gas consumption determination module to determine the theoretical gas consumption using the ash transport energy, the actual gas pressure and the pipeline differential pressure; and

[0035] The verification module is controlled to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0036] From the above scheme, it can be seen that the advantages of the present invention are:

[0037] The accuracy verification method of the pneumatic ash conveying gas consumption meter provided by the present invention obtains the ash conveying energy required under actual pneumatic ash conveying conditions, the actual gas pressure and pipeline differential pressure in a closed pipeline, and the actual gas consumption measured by the pneumatic ash conveying gas consumption meter to be tested; then, the theoretical gas consumption is determined using the ash conveying energy, the actual gas pressure and pipeline differential pressure; finally, the accuracy of the pneumatic ash conveying gas consumption meter is determined based on the deviation between the theoretical gas consumption and the measured gas consumption. This method can quickly and accurately determine whether the pneumatic ash conveying gas consumption meter of the ash conveying system is measuring accurately and whether there is a possibility of energy waste. In addition, this method can use theoretical gas consumption instead of meter measurement when the meter fails and cannot be restored in the short term. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a flow chart of the accuracy verification method of the gas consumption meter for pneumatic ash conveying;

[0039] Figure 2 This is a framework diagram of the accuracy verification device for the gas consumption meter of pneumatic ash conveying;

[0040] in,

[0041] 101-ash conveying system;

[0042] 200- Accuracy verification device for pneumatic ash conveying gas consumption meter;

[0043] 201-EMS data system;

[0044] 202-main control system;

[0045] 2011-Get module;

[0046] 2022- Theoretical gas consumption determination module;

[0047] 2023-Verification module. DETAILED DESCRIPTION

[0048] In order to make the above features and effects of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings.

[0049] The embodiment of the present invention provides a method for verifying the accuracy of a pneumatic ash conveying gas consumption meter. Specifically, Figure 1 As shown in Figure 1 The specific flow chart of the accuracy verification method of the pneumatic ash conveying gas consumption meter is shown.

[0050] A method for verifying the accuracy of a gas consumption meter for pneumatic ash conveying, specifically comprising:

[0051] S1. Obtain the ash conveying energy E required under actual pneumatic ash conveying conditions, as well as the actual gas pressure P in the closed pipeline and the pipeline differential pressure ΔP.

[0052] In a specific implementation, the ash conveying energy is determined by obtaining the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume under actual pneumatic ash conveying conditions. The ash conveying energy is expressed as:

[0053] E=m 灰 ×g×(H+L×μ) (1)

[0054] Among them, m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, μ represents the friction coefficient of the pipeline, and E represents the ash conveying energy.

[0055] S2. Determine theoretical gas consumption using the ash transport energy, the actual gas pressure, and the pipeline differential pressure.

[0056] In a specific implementation, the theoretical gas consumption is determined using the ash transport energy, the actual gas pressure, and the pipeline differential pressure, including:

[0057]

[0058] Among them, Q consumption represents the ash conveying gas consumption per hour, E represents the ash conveying energy, that is, the energy required for ash conveying; P represents the actual gas pressure, △P represents the pipeline differential pressure, and K represents the entrainment coefficient.

[0059] S3. Obtain the actual gas consumption measured by the gas consumption meter for the pneumatic ash conveying to be tested.

[0060] S4. Determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0061] The following is a specific example to illustrate the accuracy verification method of the pneumatic ash conveying gas consumption meter.

[0062] The calculation and analysis are based on the ash conveying parameters of the C-20 dust collector main pipeline from 13:00 to 14:00 on August 18, 2022. The accuracy of the pneumatic ash conveying gas consumption meter measurement data is verified by the above-mentioned pneumatic ash conveying gas consumption meter accuracy verification method to determine whether there is energy waste. The specific verification process is as follows:

[0063] First, collect the operating parameters of the C-20 dust collector main pipeline on August 18, 2022, as shown in the following table:

[0064]

[0065] Then, use formula (1) to calculate the ash transport energy, and then use formula (2) to calculate the theoretical gas consumption, that is:

[0066]

[0067] Then, the actual measured gas consumption of the pneumatic ash conveying gas consumption meter to be tested is obtained, which is 111 Nm3 / h. By comparing the theoretical gas consumption with the measured gas consumption, the accuracy of the pneumatic ash conveying gas consumption meter is determined based on the deviation between the theoretical gas consumption and the measured gas consumption, which proves that the pneumatic ash conveying gas consumption meter is accurate in measurement and there is no energy waste.

[0068] Therefore, the accuracy verification method of the pneumatic ash conveying gas consumption meter provided in the embodiment of the present invention obtains the ash conveying energy required under the actual pneumatic ash conveying working conditions, the actual gas pressure in the closed pipeline and the pipeline differential pressure, and the actual gas consumption measured by the pneumatic ash conveying gas consumption meter to be tested; then, the theoretical gas consumption is determined using the ash conveying energy, the actual gas pressure and the pipeline differential pressure; finally, the accuracy of the pneumatic ash conveying gas consumption meter is determined based on the deviation between the theoretical gas consumption and the measured gas consumption. This method can quickly and accurately determine whether the pneumatic ash conveying gas consumption meter of the ash conveying system is accurate in measurement and whether there is a possibility of energy waste. In addition, this method can use the theoretical gas consumption instead of the meter measurement when the meter cannot be restored in the short term after a failure.

[0069] On the other hand, the present invention further provides an accuracy verification device 200 for a pneumatic ash conveying gas consumption meter, which can implement each process implemented by the above-mentioned accuracy verification method for a pneumatic ash conveying gas consumption meter.

[0070] like Figure 2 As shown in Figure 2 The following is a diagram showing the structure of a device 200 for verifying the accuracy of a gas consumption meter for pneumatic ash conveying. The device comprises at least:

[0071] Another aspect of the present invention provides a device for verifying the accuracy of a gas consumption meter for pneumatic ash conveying, comprising:

[0072] The acquisition module 2011 is used to obtain the ash conveying energy required under the actual pneumatic ash conveying working conditions, as well as the actual gas pressure in the closed pipeline and the pipeline differential pressure; and

[0073] Obtain the actual gas consumption measured by the gas consumption instrument for pneumatic ash conveying to be tested;

[0074] Theoretical gas consumption determination module 2022 is used to determine the theoretical gas consumption using the ash transport energy, the actual gas pressure and the pipeline differential pressure;

[0075] The verification module 2023 is used to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0076] Optionally, the determining of theoretical gas consumption by using the ash transport energy, the actual gas pressure and the pipeline differential pressure includes:

[0077]

[0078] Among them, Q consumption represents the ash conveying gas consumption per hour, E represents the ash conveying energy, that is, the energy required for ash conveying; P represents the actual gas pressure, △P represents the pipeline differential pressure, and K represents the entrainment coefficient.

[0079] Optionally, the acquisition module is further used to obtain the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume under actual pneumatic ash conveying conditions;

[0080] The ash conveying energy is determined using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount.

[0081] Optionally, determining the ash conveying energy by using the ash conveying height, the ash conveying horizontal distance, the pipeline friction coefficient, and the ash conveying amount includes:

[0082] E=m 灰 ×g×(H+L×μ)

[0083] Among them, m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, and μ represents the friction coefficient of the pipeline.

[0084] In a specific implementation, the accuracy verification device 200 for the pneumatic ash conveying gas consumption meter can be composed of an EMS data system 201 and a main control system 202. The EMS data system 201 and the main control system 202 are interconnected, and the EMS data system 201 is connected to the ash conveying system 101. Among them, the acquisition module 2011 can be a module stored in the EMS data system. The EMS data system is used to store the ash conveying energy required under actual pneumatic ash conveying conditions, the actual gas pressure in the closed pipeline and the pipeline differential pressure; and the actual gas consumption measured by the pneumatic ash conveying gas consumption meter to be tested. The theoretical gas consumption determination module 2022 and the verification module 2023 are submodules stored in the main control system. The main control system is used to control the theoretical gas consumption determination module to use the ash conveying energy, the actual gas pressure and the pipeline differential pressure to determine the theoretical gas consumption; and to control the verification module to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

[0085] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be applied, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A method for verifying the accuracy of a pneumatic ash conveying gas consumption meter, characterized in that: include: Obtain the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume under actual pneumatic ash conveying conditions; The ash conveying energy is determined using the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume, where: E=m 灰 ×g×(H+L×μ) Where E represents the ash transport energy, that is, the energy required for ash transport; m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, and μ represents the friction coefficient of the pipeline; Obtain the actual gas pressure in the closed pipeline and the pipeline differential pressure; The theoretical gas consumption is determined using the ash transport energy, the actual gas pressure, and the pipeline differential pressure, where: Among them, Q 消耗 Indicates the ash conveying gas consumption per hour, P indicates the actual gas pressure, △P indicates the pipeline differential pressure, and K indicates the entrainment coefficient; Obtain the actual gas consumption measured by the gas consumption instrument for pneumatic ash conveying to be tested; The accuracy of the pneumatic ash conveying gas consumption meter is determined based on the deviation between the theoretical gas consumption and the measured gas consumption.

2. A device for verifying the accuracy of a pneumatic ash conveying gas consumption meter, characterized in that: include: An acquisition module is used to obtain the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, ash conveying volume, actual gas pressure in the closed pipeline, and pipeline differential pressure under actual pneumatic ash conveying conditions; and to obtain the actual gas consumption measured by the gas consumption instrument for the pneumatic ash conveying to be tested; The theoretical gas consumption determination module is used to determine the ash conveying energy using the ash conveying height, ash conveying horizontal distance, pipeline friction coefficient, and ash conveying volume, wherein: E=m 灰 ×g×(H+L×μ) Where E represents the ash transport energy, that is, the energy required for ash transport; m 灰 It represents the ash conveying volume per hour, g represents the acceleration of gravity, H represents the ash conveying height, L represents the horizontal distance of ash conveying, and μ represents the friction coefficient of the pipeline; The theoretical gas consumption is determined using the ash transport energy, the actual gas pressure, and the pipeline differential pressure, where: Among them, Q 消耗 Indicates the ash conveying gas consumption per hour, P indicates the actual gas pressure, △P indicates the pipeline differential pressure, and K indicates the entrainment coefficient; The verification module is used to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

3. The accuracy verification device for the gas consumption meter of pneumatic ash conveying according to claim 2 is characterized in that: The acquisition module is a module stored in the EMS data system; The EMS data system is used to store the ash conveying energy required under actual pneumatic ash conveying conditions, the actual gas pressure in the closed pipeline and the pipeline differential pressure; and the actual gas consumption measured by the pneumatic ash conveying gas consumption instrument to be tested.

4. The accuracy verification device for the pneumatic ash conveying gas consumption meter according to claim 2 is characterized in that: The theoretical gas consumption determination module and verification module are submodules stored in the main control system. The main control system is used to control the theoretical gas consumption determination module to determine the theoretical gas consumption using the ash transport energy, the actual gas pressure and the pipeline differential pressure; as well as The verification module is controlled to determine the accuracy of the pneumatic ash conveying gas consumption meter based on the deviation between the theoretical gas consumption and the measured gas consumption.

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