Transportation air quantity adjusting method and related device

Abstract

The invention discloses a conveying air quantity adjusting method and a related device, which can be applied to computer equipment with conveying air quantity adjusting capability and are used for acquiring working condition information and a corresponding relation between the working condition information and an air quantity adjusting mode, and the working condition information is used for describing the change condition of material conveying. And on the basis of the corresponding relation, the air flow adjusting mode corresponding to the working condition information is determined, in the corresponding relation, if the material conveying speed described by the working condition information is low or the ash-air ratio is large, the opening degree of a stroke valve used for controlling the conveying air flow is increased, and if the material conveying speed described by the working condition information is high or the ash-air ratio is small, the opening degree of the stroke valve is reduced. And the opening degree of the stroke valve is adjusted according to the air flow adjusting mode. Therefore, the stroke valve can be adjusted according to the air flow adjusting mode corresponding to the working condition information, the conveying air flow is adjusted in a targeted mode, the pneumatic conveying system can adapt to different working conditions, and the flexibility of the pneumatic conveying process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic conveying, and in particular to a method for adjusting conveying gas volume and a related device. Background Art

[0002] Pneumatic conveying, also known as air flow conveying, is an efficient way of transporting materials. Pneumatic conveying usually uses compressed gas as a power source to push materials to the destination along the air flow direction in a closed pipeline. It is widely used in many fields such as chemical industry, mining, cement production, etc.

[0003] However, in the related art, the flexibility of pneumatic conveying is low. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide a pneumatic conveying method and related devices to solve the problem of low flexibility of pneumatic conveying.

[0005] Based on this, the embodiments of the present application disclose the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a method for adjusting the delivery gas volume, the method comprising:

[0007] Acquire working condition information and the corresponding relationship between the working condition information and the gas volume adjustment method, wherein the working condition information is used to describe the change of material transportation, and the gas volume adjustment method is used to indicate the operation of adjusting the conveying gas volume;

[0008] Based on the corresponding relationship, determine the gas volume adjustment method corresponding to the working condition information, in which if the material conveying speed described by the working condition information is slow or the ash-gas ratio is large, increase the opening of the stroke valve used to control the conveying gas volume; if the material conveying speed described by the working condition information is fast or the ash-gas ratio is small, reduce the opening of the stroke valve;

[0009] According to the gas volume adjustment method, the opening of the travel valve is adjusted.

[0010] Optionally, if the operating condition information includes an output characteristic, the corresponding relationship includes a first corresponding relationship for describing the output characteristic and the gas volume adjustment mode, and determining the gas volume adjustment mode corresponding to the operating condition information based on the corresponding relationship includes:

[0011] Based on the first corresponding relationship, the gas volume adjustment method corresponding to the output characteristic is determined. The output characteristic is used to describe the speed of material transportation. In the first corresponding relationship, if the output characteristic is large, the opening of the stroke valve is reduced. If the output characteristic is small, the opening of the stroke valve is increased.

[0012] Optionally, if the operating condition information includes a pressure characteristic, the stroke valve includes a delivery stroke valve, and the delivery stroke valve is used to control the delivery gas volume of the delivery gas circuit, then the corresponding relationship includes a second corresponding relationship for describing the pressure characteristic and the gas volume adjustment method of the delivery gas circuit, and the determining the gas volume adjustment method corresponding to the operating condition information based on the corresponding relationship includes:

[0013] Based on the second corresponding relationship, determining the gas volume adjustment method of the conveying gas path corresponding to the pressure characteristic, the pressure characteristic is used to describe the ash-gas ratio, in the second corresponding relationship, if the pressure characteristic is large, then the opening of the conveying stroke valve is increased, if the pressure characteristic is small, then the opening of the conveying stroke valve is reduced;

[0014] The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises:

[0015] The opening of the delivery stroke valve is adjusted according to the gas volume adjustment method of the delivery gas circuit.

[0016] Optionally, the stroke valve includes other stroke valves, and the other stroke valves are used to control the delivery gas volume of other gas paths, and the corresponding relationship includes a third corresponding relationship for describing the pressure characteristic and the gas volume adjustment mode, and the method further includes:

[0017] Based on the third corresponding relationship, determining the gas volume ratio adjustment method corresponding to the pressure feature, in the third corresponding relationship, if the pressure feature is large, then increasing the opening ratio between the delivery stroke valve and the other stroke valves, and if the pressure feature is small, then reducing the opening ratio between the delivery stroke valve and the other stroke valves;

[0018] The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises:

[0019] According to the opening ratio indicated by the gas volume ratio adjustment method, the opening of the delivery stroke valve is adjusted, and the openings of the other stroke valves are adjusted.

[0020] Optionally, if the operating condition information includes an output characteristic, the corresponding relationship includes a first corresponding relationship for describing the output characteristic and the gas volume adjustment mode, and the method further includes:

[0021] According to the opening ratio indicated by the gas volume ratio adjustment method and the output characteristic, based on the first corresponding relationship, the gas volume adjustment method of the delivery gas path and the gas volume adjustment methods of other gas paths are determined. In the first corresponding relationship, if the output characteristic is small, the opening of the travel valve is increased;

[0022] The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises:

[0023] Adjusting the delivery stroke valve according to the gas volume adjustment method of the delivery gas circuit;

[0024] The other stroke valves are adjusted according to the gas volume adjustment method of the other gas circuits.

[0025] Optionally, the output characteristic is obtained by:

[0026] Obtaining an actual feed amount and a conveying duration, wherein the actual feed amount is used to indicate the amount of material conveyed by pneumatic conveying, and the conveying duration is the duration of the pneumatic conveying process;

[0027] The output characteristic is obtained according to the ratio between the actual feed amount and the conveying time.

[0028] Optionally, the pressure characteristic is obtained by:

[0029] Obtaining a pressure curve, wherein the pressure curve is used to describe the pressure change inside the pneumatic conveying pipeline;

[0030] The pressure feature is obtained by feature extraction according to the pressure curve.

[0031] In a second aspect, an embodiment of the present application provides a device for adjusting the amount of delivered gas, the device comprising: an acquisition unit, a determination unit, and an adjustment unit;

[0032] The acquisition unit is used to acquire working condition information and the corresponding relationship between the working condition information and the gas volume adjustment mode, wherein the working condition information is used to describe the change of material transportation, and the gas volume adjustment mode is used to indicate the operation of adjusting the conveying gas volume;

[0033] The determining unit is used to determine the gas volume adjustment method corresponding to the working condition information based on the corresponding relationship, in which if the material conveying speed described by the working condition information is slow or the ash-gas ratio is large, the opening of the stroke valve used to control the conveying gas volume is increased, and if the material conveying speed described by the working condition information is fast or the ash-gas ratio is small, the opening of the stroke valve is reduced;

[0034] The adjustment unit is used to adjust the opening of the travel valve according to the gas volume adjustment method.

[0035] In a third aspect, an embodiment of the present application provides a computer device, characterized in that the computer device includes a processor and a memory:

[0036] The memory is used to store a computer program and transmit the computer program to the processor;

[0037] The processor is configured to execute the method described in the first aspect according to the computer program.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method described in the first aspect above.

[0039] It can be seen from the above technical solutions that the present application has at least the following beneficial effects:

[0040] The embodiment of the present application no longer uses a constant airflow for pneumatic conveying, but adjusts the conveying gas volume according to the working condition information, obtains the working condition information, and the corresponding relationship between the working condition information and the gas volume adjustment method, so as to adjust the conveying gas volume according to the changes in material conveying. Based on the corresponding relationship, the gas volume adjustment method corresponding to the working condition information is determined, so that when the material conveying speed is slow or the ash-to-gas ratio is large, an adjustment method for increasing the conveying gas volume can be obtained, and when the material conveying speed is fast or the ash-to-gas ratio is small, an adjustment method for reducing the conveying gas volume can be obtained, so that the gas volume adjustment method can be determined more flexibly for different working conditions. According to the gas volume adjustment method, the opening of the stroke valve is adjusted, so that the pneumatic conveying can be dynamically adjusted according to the working conditions, so that the pneumatic conveying process is in a stable state that is more adapted to the working conditions, optimizes energy utilization, and reduces the failure rate of the pneumatic conveying system, thereby improving the flexibility of pneumatic conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 A schematic diagram of a flow chart of a method for adjusting the amount of gas delivered provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of the structure of a pneumatic conveying system provided in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of the structure of a gas delivery volume adjustment device provided in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0047] The gas volume is a quantitative parameter of the air flow, which is used to indicate the volume of gas entering the pneumatic conveying system per unit time. For example, in the three-stage gas path at a certain moment, the gas volume is 10 standard cubic meters per hour (Nm 3 / h), standard cubic is the volume of gas measured under standard conditions. Usually, standard conditions refer to the state of temperature of 0 degrees Celsius and atmospheric pressure of 101.325 kPa (1 atmosphere), and standard cubic represents the volume of gas under standard conditions.

[0048] In the related art, a constant airflow is usually used to transport materials. The constant airflow means that the transported gas volume does not change, and the volume of gas injected into the pipeline per unit time remains unchanged. However, this method makes it difficult to adjust the transported gas volume, resulting in the pneumatic conveying process being unable to adapt to a variety of working conditions. This may lead to increased energy consumption, energy waste, decreased stability of the pneumatic conveying system, and other problems. Therefore, this method has low flexibility.

[0049] The following three situations that occur during pneumatic conveying are used as examples to illustrate:

[0050] (1) If only a small amount of material needs to be transported, using only constant airflow may result in unnecessary energy waste and high energy consumption, which not only increases operating costs but also has a negative impact on the environment.

[0051] (2) If a large amount of material needs to be conveyed, if only a constant airflow is used without adjustment for the working conditions, material blockage may occur, causing the pneumatic conveying system to shut down and increase maintenance costs.

[0052] (3) If there is equipment leakage or air source fluctuation, if only constant airflow is used, it may not be possible to meet the stable material transportation requirements under such conditions.

[0053] Based on this, an embodiment of the present application provides a method for adjusting the conveying gas volume and a related device, by acquiring operating condition information and determining the gas volume adjustment method corresponding to the operating condition information based on the correspondence between the operating condition information and the gas volume adjustment method, so that the stroke valve can be adjusted according to the gas volume adjustment method, and the conveying gas volume can be adjusted in a targeted manner, so that the pneumatic conveying system can adapt to different operating conditions and improve the flexibility of the pneumatic conveying process.

[0054] The gas delivery volume adjustment method provided in the present application can be applied to computer devices with gas delivery volume adjustment capabilities, such as terminal devices and servers. Specifically, the terminal device can be an electronic control unit, a desktop computer, etc.; the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, and the present application does not limit this.

[0055] See also Figure 1 , which is a flow chart of a method for adjusting the amount of gas delivered provided by an embodiment of the present application. For ease of description, the following embodiment is introduced by taking the execution subject of the method for adjusting the amount of gas delivered as a server as an example. Figure 1 As shown, the method for adjusting the delivery gas volume comprises the following steps:

[0056] S101: Acquire operating condition information and the corresponding relationship between the operating condition information and the gas volume adjustment method.

[0057] The operating condition information refers to the operating status information of the pneumatic conveying system during operation, which is used to describe the changes in material transportation. The operating condition information may include the material feed amount, conveying speed, ash-to-gas ratio (i.e., the ratio of material to gas), pressure changes, etc. The gas volume adjustment method is used to indicate the operation of adjusting the conveying gas volume. For example, one gas volume adjustment method may be to increase the opening of the stroke valve to increase the conveying gas volume. The corresponding relationship reflects the association between the operating condition information and the gas volume adjustment method. Based on the corresponding relationship, the gas volume adjustment method corresponding to the operating condition information can be determined according to the operating condition information.

[0058] See also Figure 2 , which is a structural schematic diagram of a pneumatic conveying system provided in an embodiment of the present application.

[0059] Among them, 201 is a tertiary air flow meter, 202 is a tertiary air stroke valve, 203 is a primary air flow meter, 204 is a primary air stroke valve, 205 is a primary air shuttle valve, 206 is a tertiary air shuttle valve, 207 is a feed swing valve, 208 is a material level meter, 209 is a silo pump, 2010 is a discharge gate valve, 2011 is a pressure transmitter, 2012 is an intelligent mainframe box (a computer device), and 2013 is a weighing sensor. The intelligent mainframe box can connect the various valves and sensors of the pneumatic conveying system through cables.

[0060] The pneumatic conveying system mainly includes the gas path of tertiary gas and the gas path of primary gas. The tertiary gas mainly plays the role of conveying materials in the pneumatic conveying system, responsible for pushing the materials in the silo pump into the transmission pipeline and moving along the direction of the airflow. The primary gas mainly plays the role of fluidization in the pneumatic conveying system. Fluidization refers to the process of evenly passing gas (usually air) into the bottom of solid particle materials to suspend the material particles and form a fluid-like state.

[0061] As a specific implementation of pneumatic conveying, the pneumatic conveying system receives a start command, opens the feed swing valve, and injects material into the silo pump. If the material level meter detects that the preset storage ratio has been reached or the weighing sensor detects that the preset weight threshold has been reached, the injection of material is stopped. The tertiary air shuttle valve and the primary air shuttle valve are opened to open the air path and indicate the direction of material movement, and airflow is provided to the tertiary air path and the primary air path through a blower or a compressor. With the action of the airflow, the material moves long or short distances along the preset pipeline path to reach the material's transportation destination.

[0062] S102: Based on the corresponding relationship, determine the gas volume adjustment method corresponding to the operating condition information.

[0063] In this correspondence, if the material conveying speed described by the working condition information is slow or the ash-gas ratio is large, the opening of the stroke valve used to control the conveying gas volume is increased; if the material conveying speed described by the working condition information is fast or the ash-gas ratio is small, the opening of the stroke valve is reduced. The ash-gas ratio refers to the ratio of material (solid particles) to conveying gas.

[0064] If the material conveying speed described in the operating condition information is slow or the ash-to-gas ratio is large, it means that the current pneumatic conveying system may not be able to meet the actual production needs and may easily lead to pipeline accumulation. By increasing the opening of the stroke valve and increasing the conveying gas volume, the material conveying speed can be increased to meet the actual production needs.

[0065] If the operating condition information describes that the material conveying speed is fast or the ash-to-gas ratio is small, it means that the current pneumatic conveying system may have a state of less material and sufficient airflow. This operating condition will lead to excessive consumption of electricity and other energy and wind energy in the pneumatic conveying process. By reducing the opening of the stroke valve and reducing the conveying gas volume, energy and energy waste can be reduced.

[0066] For example, suppose that in a food processing plant, a pneumatic conveying system is being used to transport grain powder. If the server senses that the weight of the grain powder collected by the weighing sensor installed on the silo pump is decreasing too slowly, it means that the grain powder is being conveyed slowly, which indicates that there may be a problem with poor conveying. For this working condition, based on the correspondence between the working condition information and the gas volume adjustment method, it is determined that the opening of the stroke valve needs to be increased to increase the air flow speed and flow rate, so that the material can pass through the pipeline faster and more smoothly, while reducing the ash-to-gas ratio to prevent blockage.

[0067] As an implementation method, the corresponding relationship can be expressed in the form of fuzzy rules. Fuzzy rules are a method based on fuzzy logic to describe and process imprecise or uncertain information. It expresses the relationship between conditions and results through fuzzy levels (such as "high", "low", "fast", and "slow"). The fuzzy levels can be determined by membership functions, such as trapezoidal membership functions and S-shaped membership functions.

[0068] In pneumatic conveying systems, fuzzy rules can be used to establish a nonlinear mapping relationship between operating information (such as material conveying speed, ash-gas ratio, etc.) and gas volume adjustment methods. Fuzzy rules can better simulate the empirical judgment of human experts and have good robustness to small changes in data. For example, if the material conveying speed is "too slow", the stroke valve opening will "increase more". If the ash-gas ratio is "slightly smaller", the stroke valve opening will "increase less".

[0069] S103: Adjust the opening of the stroke valve according to the gas volume adjustment method.

[0070] By adjusting the opening of the stroke valve, the conveying gas volume can be changed, thereby changing the air flow conveying intensity of the air path corresponding to the stroke valve, and adjusting the working conditions of the pneumatic conveying system to prevent negative effects such as material accumulation and energy loss.

[0071] For example, according to the gas volume adjustment method determined in step S102, it is necessary to increase the opening of the travel valve to increase the gas volume. Based on this, step S103 can trigger the following operations:

[0072] The server sends a command to the stroke valve, requiring it to increase its opening from the current 60% to 75%. After receiving the command, the stroke valve adjusts to the new opening position. As the opening increases, more compressed air enters the pipeline, increasing the conveying gas volume, allowing the material to be pushed forward faster.

[0073] It can be seen from the above technical scheme that the embodiment of the present application no longer uses a constant airflow for pneumatic conveying, but adjusts the conveying gas volume according to the working condition information, obtains the working condition information, and the corresponding relationship between the working condition information and the gas volume adjustment method, so as to adjust the conveying gas volume according to the changes in material conveying. Based on the corresponding relationship, the gas volume adjustment method corresponding to the working condition information is determined, so that under the working condition where the material conveying speed is slow or the ash-to-gas ratio is large, an adjustment method for increasing the conveying gas volume can be obtained, and under the working condition where the material conveying speed is fast or the ash-to-gas ratio is small, an adjustment method for reducing the conveying gas volume can be obtained, so that the gas volume adjustment method can be determined more flexibly for different working conditions. According to the gas volume adjustment method, the opening of the stroke valve is adjusted, so that the pneumatic conveying can be dynamically adjusted according to the working condition, so that the pneumatic conveying process is in a stable state that is more adapted to the working condition, optimizes energy utilization, and reduces the failure rate of the pneumatic conveying system, thereby improving the flexibility of pneumatic conveying.

[0074] The present application does not limit the method for determining the gas volume adjustment method. In one possible implementation method, the operating condition information includes output characteristics and pressure characteristics. The following is an illustration using two determination methods as examples, where determination method one corresponds to the output characteristics, and determination method two corresponds to the pressure characteristics.

[0075] The following is an explanation of determination method 1:

[0076] If the operating condition information includes output characteristics, the corresponding relationship includes a first corresponding relationship for describing the output characteristics and the gas volume adjustment method. Based on the first corresponding relationship, the gas volume adjustment method corresponding to the output characteristics is determined.

[0077] Among them, the output characteristic is a characteristic value reflecting the efficiency of pneumatic conveying and is used to describe the speed of material conveying. In the first corresponding relationship, if the output characteristic is small, the opening of the stroke valve is increased, and if the output characteristic is large, the opening of the stroke valve is reduced.

[0078] As an implementation method, the output characteristics can be obtained as follows, see A1-A2:

[0079] A1: Get the actual feed volume and conveying time.

[0080] Among them, the actual feed amount is used to indicate the amount of material conveyed by pneumatic conveying, which can be obtained through a weighing sensor, or can be calculated based on the storage ratio of the silo pump measured by the level meter according to the type of material and the volume of the silo pump. The conveying time is the duration of the pneumatic conveying process.

[0081] A2: The output characteristics are obtained based on the ratio between the actual feed volume and the conveying time.

[0082] For example, the output characteristics can be determined by the following formula:

[0083]

[0084] Through the above formula, it can be found that the more actual feed volume per unit time, the greater the output characteristic, indicating that the material is transported faster. By determining the output characteristic based on the actual feed volume and the conveying time, the characteristic value reflecting the pneumatic conveying efficiency can be determined without changing the original hardware conditions of the pneumatic conveying system, thereby obtaining working condition information that is more indicative of adjusting the conveying gas volume.

[0085] In the first relationship, if the output characteristic is large, it means that the material is conveyed at a fast speed, reflecting a large conveying gas volume. The conveying gas volume can be reduced by reducing the opening of the stroke valve, thereby reducing energy waste. If the output characteristic is small, it means that the material is conveyed at a slow speed, reflecting a small conveying gas volume. The conveying gas volume can be increased by increasing the opening of the stroke valve, thereby accelerating material conveying and meeting actual production needs. At the same time, it prevents pipeline material accumulation and pneumatic conveying system downtime due to long-term insufficient gas supply.

[0086] By determining the air volume adjustment method corresponding to the output characteristics based on the first corresponding relationship according to the output characteristics, the conveying air volume can be dynamically adapted to the working conditions such as the material conveying speed, so that the material conveying speed is in a stable speed range, ensuring the stability of the pneumatic conveying system and improving the flexibility of the pneumatic conveying system for different material conveying speeds.

[0087] The second determination method is described below, see B1-B2:

[0088] If the operating condition information includes pressure characteristics, the stroke valve includes a delivery stroke valve, and the delivery stroke valve is used to control the delivery gas volume of the delivery gas circuit, then the corresponding relationship includes a second corresponding relationship for describing the pressure characteristics and the gas volume adjustment method of the delivery gas circuit.

[0089] B1: Based on the second corresponding relationship, determine the gas volume adjustment method of the gas delivery path corresponding to the pressure characteristic.

[0090] The pressure characteristic is a characteristic value that reflects the pressure change inside the pneumatic conveying system and is used to describe the ash-gas ratio. In the second corresponding relationship, if the pressure characteristic is large, it means that the ash-gas ratio is large and pipeline congestion is likely to occur. The conveying gas volume can be increased by increasing the opening of the conveying stroke valve. If the pressure characteristic is small, it means that the current conveying gas volume is large, far exceeding the conveying gas volume required by the pneumatic conveying system, then the opening of the conveying stroke valve can be reduced to reduce the conveying gas volume.

[0091] As an implementation method, the pressure characteristics can be obtained as follows, see C1-C2:

[0092] C1: Get the pressure curve.

[0093] Among them, the pressure curve is used to describe the pressure changes inside the pneumatic conveying pipeline and can be obtained through equipment such as pressure transmitters.

[0094] C2: According to the pressure curve, pressure characteristics are obtained through feature extraction.

[0095] The feature extraction process can quantify the pressure curve into a feature value by identifying statistical features such as the mean, variance or standard deviation in the pressure curve within the pressure curve period, thereby obtaining the pressure feature.

[0096] By determining the pressure characteristics based on the pressure curve, the pressure changes inside the pneumatic conveying pipeline can be quantified without changing the original hardware conditions of the pneumatic conveying system, and the characteristic value reflecting the ash-gas ratio can be determined, thereby obtaining operating condition information that is more indicative for adjusting the conveying gas volume.

[0097] B2: Adjust the opening of the delivery stroke valve according to the gas volume adjustment method of the delivery gas circuit.

[0098] According to actual production needs, the pneumatic conveying system may have other gas circuits in addition to the conveying gas circuit, which may assist the pneumatic conveying. Figure 2 As shown, the tertiary gas stroke valve controls the conveying gas volume of the tertiary gas gas circuit. The tertiary gas gas circuit is a conveying gas circuit, which mainly plays the role of conveying materials. The primary gas gas circuit is one of the other gas circuits, which mainly plays the role of fluidization.

[0099] Therefore, according to the pressure characteristics, the gas volume adjustment method corresponding to the pressure characteristics is determined based on the second corresponding relationship. The conveying gas volume of the conveying pipeline can be dynamically adapted to the working conditions such as the ash-gas ratio, so that the material conveying speed is in a stable speed range, ensuring the stability of the pneumatic conveying system and improving the flexibility of the pneumatic conveying system for different ash-gas ratios.

[0100] In view of the scenario where the pneumatic conveying system includes multiple air paths, the embodiment of the present application also provides a method for adjusting the travel valve, see D1-D2:

[0101] D1: Based on the third corresponding relationship, determine the gas volume ratio adjustment method corresponding to the pressure feature.

[0102] Among them, in the third corresponding relationship, if the pressure characteristic is large, it means that the ash-gas ratio is large and pipeline congestion is likely to occur, then the intensity of the conveying gas volume can be increased by increasing the opening ratio between the conveying stroke valve and the other stroke valves. If the pressure characteristic is small, it means that the ash-gas ratio is small and the current intensity of the conveying gas volume is large, then the intensity of the conveying gas volume can be reduced by reducing the opening ratio between the conveying stroke valve and the other stroke valves.

[0103] The opening ratio can be expressed by the following formula:

[0104]

[0105] or,

[0106]

[0107] D2: According to the opening ratio indicated by the gas volume ratio adjustment method, the opening of the delivery stroke valve is adjusted, and the openings of the other stroke valves are adjusted.

[0108] By adjusting the opening ratio between the conveying stroke valve and other stroke valves according to the pressure characteristics, the distribution of the conveying gas volume in different gas paths can be optimized according to the ash-gas ratio described by the pressure characteristics, effectively preventing pipeline blockage, optimizing energy utilization, and improving the flexibility of pneumatic conveying.

[0109] In a possible implementation, the embodiment of the present application further provides a method for adjusting the delivery gas volume by combining the opening ratio and increasing the gas volume, see E1-E3:

[0110] E1: According to the opening ratio indicated by the gas volume ratio adjustment method and the output characteristics, based on the first corresponding relationship, the gas volume adjustment method of the transmission gas circuit and the gas volume adjustment methods of other gas circuits are determined.

[0111] E2: Adjust the delivery stroke valve according to the gas volume adjustment method of the delivery gas circuit.

[0112] E3: Adjust other stroke valves according to the gas volume adjustment method of other gas lines.

[0113] For example, according to the gas volume adjustment method, the opening ratio of the tertiary gas stroke valve and the primary gas stroke valve will be adjusted to 3:1. At the same time, according to the first corresponding relationship, the delivery gas volume needs to be increased. According to this ratio, the delivery gas volume of the tertiary gas gas circuit and the primary gas gas circuit is increased synchronously.

[0114] Therefore, by combining the opening ratio and the adjustment method of increasing the total gas volume, the pneumatic conveying system can adjust the opening of each stroke valve according to the material conveying speed and the ash-gas ratio, thereby adjusting the conveying gas volume of each gas path, thereby reducing unnecessary energy consumption and preventing material accumulation under complex working conditions. The pneumatic conveying system is more stable and the conveying gas volume adjustment process is more flexible.

[0115] In view of the above-described method for adjusting the delivery gas volume, the present application also provides a delivery gas volume adjustment device to enable the above-described delivery gas volume adjustment method to be applied and implemented in practice.

[0116] See also Figure 3, which is a schematic diagram of the structure of a gas delivery volume adjustment device provided in an embodiment of the present application. Figure 3 As shown, the delivery gas volume adjustment device 300 includes: an acquisition unit 301, a determination unit 302 and an adjustment unit 303;

[0117] The acquisition unit 301 is used to acquire operating condition information and the corresponding relationship between the operating condition information and the gas volume adjustment method, wherein the operating condition information is used to describe the change of material transportation, and the gas volume adjustment method is used to indicate the operation of adjusting the transportation gas volume;

[0118] The determining unit 302 is used to determine the gas volume adjustment method corresponding to the operating condition information based on the corresponding relationship. In the corresponding relationship, if the material conveying speed described by the operating condition information is slow or the ash-gas ratio is large, the opening of the stroke valve used to control the conveying gas volume is increased; if the material conveying speed described by the operating condition information is fast or the ash-gas ratio is small, the opening of the stroke valve is reduced;

[0119] The adjustment unit 303 is used to adjust the opening of the travel valve according to the gas volume adjustment method.

[0120] It can be seen from the above technical scheme that the conveying gas volume adjustment device provided in the embodiment of the present application includes an acquisition unit, a determination unit and an adjustment unit. Among them, the acquisition unit acquires the working condition information and the corresponding relationship between the working condition information and the gas volume adjustment method, so as to adjust the conveying gas volume according to the changes in material transportation. The determination unit determines the gas volume adjustment method corresponding to the working condition information based on the corresponding relationship, so that the adjustment method for increasing the conveying gas volume can be obtained under the working condition where the material conveying speed is slow or the ash-to-gas ratio is large, and the adjustment method for reducing the conveying gas volume can be obtained under the working condition where the material conveying speed is fast or the ash-to-gas ratio is small, so as to more flexibly determine the gas volume adjustment method for different working conditions. The adjustment unit adjusts the opening of the stroke valve according to the gas volume adjustment method, so that the pneumatic conveying can be dynamically adjusted according to the working condition, so that the pneumatic conveying process is in a stable state that is more adapted to the working condition, optimizes energy utilization, and reduces the failure rate of the pneumatic conveying system, thereby improving the flexibility of pneumatic conveying.

[0121] As a possible implementation manner, the determining unit 302 is specifically configured to:

[0122] Based on the first corresponding relationship, the gas volume adjustment method corresponding to the output characteristic is determined. The output characteristic is used to describe the speed of material transportation. In the first corresponding relationship, if the output characteristic is large, the opening of the stroke valve is reduced. If the output characteristic is small, the opening of the stroke valve is increased.

[0123] As a possible implementation manner, the determining unit 302 is further configured to:

[0124] Based on the second corresponding relationship, determining the gas volume adjustment method of the conveying gas path corresponding to the pressure characteristic, the pressure characteristic is used to describe the ash-gas ratio, in the second corresponding relationship, if the pressure characteristic is large, then the opening of the conveying stroke valve is increased, if the pressure characteristic is small, then the opening of the conveying stroke valve is reduced;

[0125] The adjustment unit 303 is specifically used for:

[0126] The opening of the delivery stroke valve is adjusted according to the gas volume adjustment method of the delivery gas circuit.

[0127] As a possible implementation manner, the device further includes a ratio determination unit, configured to:

[0128] Based on the third corresponding relationship, determining the gas volume ratio adjustment method corresponding to the pressure feature, in the third corresponding relationship, if the pressure feature is large, then increasing the opening ratio between the delivery stroke valve and the other stroke valves, and if the pressure feature is small, then reducing the opening ratio between the delivery stroke valve and the other stroke valves;

[0129] The adjusting unit 303 is further used for:

[0130] According to the opening ratio indicated by the gas volume ratio adjustment method, the opening of the delivery stroke valve is adjusted, and the openings of the other stroke valves are adjusted.

[0131] As a possible implementation manner, the device further includes a combining unit, which is used to:

[0132] According to the opening ratio indicated by the gas volume ratio adjustment method and the output characteristic, based on the first corresponding relationship, the gas volume adjustment method of the delivery gas path and the gas volume adjustment methods of other gas paths are determined. In the first corresponding relationship, if the output characteristic is small, the opening of the travel valve is increased;

[0133] The adjusting unit 303 is further used for:

[0134] Adjusting the delivery stroke valve according to the gas volume adjustment method of the delivery gas circuit;

[0135] The other stroke valves are adjusted according to the gas volume adjustment method of the other gas circuits.

[0136] As a possible implementation, the output characteristics are obtained by:

[0137] Obtaining an actual feed amount and a conveying duration, wherein the actual feed amount is used to indicate the amount of material conveyed by pneumatic conveying, and the conveying duration is the duration of the pneumatic conveying process;

[0138] The output characteristic is obtained according to the ratio between the actual feed amount and the conveying time.

[0139] As a possible implementation, the pressure characteristic is obtained by:

[0140] Obtaining a pressure curve, wherein the pressure curve is used to describe the pressure change inside the pneumatic conveying pipeline;

[0141] The pressure feature is obtained by feature extraction according to the pressure curve.

[0142] See also Figure 4 , the embodiment of the present application further provides a computer device, the computer device comprising a memory 401 and a processor 402:

[0143] The memory is used to store a computer program and transmit the computer program to the processor;

[0144] The processor is configured to execute the method of the above method embodiment according to the computer program.

[0145] An embodiment of the present application further provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method of the above method embodiment.

[0146] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0147] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0148] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0149] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0150] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for adjusting the amount of conveying gas, characterized in that: The method comprises: Acquire working condition information and the corresponding relationship between the working condition information and the gas volume adjustment method, wherein the working condition information is used to describe the change of material transportation, and the gas volume adjustment method is used to indicate the operation of adjusting the conveying gas volume; Based on the corresponding relationship, determine the gas volume adjustment method corresponding to the working condition information, in which if the material conveying speed described by the working condition information is slow or the ash-gas ratio is large, increase the opening of the stroke valve used to control the conveying gas volume; if the material conveying speed described by the working condition information is fast or the ash-gas ratio is small, reduce the opening of the stroke valve; According to the gas volume adjustment method, the opening of the travel valve is adjusted.

2. The method according to claim 1, characterized in that If the operating condition information includes an output characteristic, the corresponding relationship includes a first corresponding relationship for describing the output characteristic and the gas volume adjustment method, and determining the gas volume adjustment method corresponding to the operating condition information based on the corresponding relationship includes: Based on the first corresponding relationship, the gas volume adjustment method corresponding to the output characteristic is determined. The output characteristic is used to describe the speed of material transportation. In the first corresponding relationship, if the output characteristic is large, the opening of the stroke valve is reduced. If the output characteristic is small, the opening of the stroke valve is increased.

3. The method according to claim 1, characterized in that If the operating condition information includes a pressure characteristic, the stroke valve includes a delivery stroke valve, and the delivery stroke valve is used to control the delivery gas volume of the delivery gas circuit, then the corresponding relationship includes a second corresponding relationship for describing the pressure characteristic and the gas volume adjustment method of the delivery gas circuit, and the determining the gas volume adjustment method corresponding to the operating condition information based on the corresponding relationship includes: Based on the second corresponding relationship, determining the gas volume adjustment method of the conveying gas path corresponding to the pressure characteristic, the pressure characteristic is used to describe the ash-gas ratio, in the second corresponding relationship, if the pressure characteristic is large, then the opening of the conveying stroke valve is increased, if the pressure characteristic is small, then the opening of the conveying stroke valve is reduced; The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises: The opening of the delivery stroke valve is adjusted according to the gas volume adjustment method of the delivery gas circuit.

4. The method according to claim 3, characterized in that The stroke valve includes other stroke valves, and the other stroke valves are used to control the delivery gas volume of other gas circuits. The corresponding relationship includes a third corresponding relationship for describing the pressure characteristic and the gas volume ratio adjustment method. The method also includes: Based on the third corresponding relationship, determining the gas volume ratio adjustment method corresponding to the pressure feature, in the third corresponding relationship, if the pressure feature is large, then increasing the opening ratio between the delivery stroke valve and the other stroke valves, and if the pressure feature is small, then reducing the opening ratio between the delivery stroke valve and the other stroke valves; The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises: According to the opening ratio indicated by the gas volume ratio adjustment method, the opening of the delivery stroke valve is adjusted, and the openings of the other stroke valves are adjusted.

5. The method according to claim 4, characterized in that If the operating condition information includes an output characteristic, the corresponding relationship includes a first corresponding relationship for describing the output characteristic and the gas volume adjustment mode, and the method further includes: According to the opening ratio indicated by the gas volume ratio adjustment method and the output characteristic, based on the first corresponding relationship, the gas volume adjustment method of the delivery gas path and the gas volume adjustment methods of other gas paths are determined. In the first corresponding relationship, if the output characteristic is small, the opening of the travel valve is increased; The step of adjusting the opening of the travel valve according to the gas volume adjustment method comprises: Adjusting the delivery stroke valve according to the gas volume adjustment method of the delivery gas circuit; The other stroke valves are adjusted according to the gas volume adjustment method of the other gas circuits.

6. The method according to claim 2, characterized in that The output characteristics are obtained in the following way: Obtaining an actual feed amount and a conveying duration, wherein the actual feed amount is used to indicate the amount of material conveyed by pneumatic conveying, and the conveying duration is the duration of the pneumatic conveying process; The output characteristic is obtained according to the ratio between the actual feed amount and the conveying time.

7. The method according to claim 3, characterized in that The pressure characteristics are obtained as follows: Obtaining a pressure curve, wherein the pressure curve is used to describe the pressure change inside the pneumatic conveying pipeline; The pressure feature is obtained by feature extraction according to the pressure curve.

8. A conveying gas volume adjustment device, characterized in that: The device comprises: an acquisition unit, a determination unit and an adjustment unit; The acquisition unit is used to acquire working condition information and the corresponding relationship between the working condition information and the gas volume adjustment mode, wherein the working condition information is used to describe the change of material transportation, and the gas volume adjustment mode is used to indicate the operation of adjusting the conveying gas volume; The determining unit is used to determine the gas volume adjustment method corresponding to the working condition information based on the corresponding relationship, in which if the material conveying speed described by the working condition information is slow or the ash-gas ratio is large, the opening of the stroke valve used to control the conveying gas volume is increased, and if the material conveying speed described by the working condition information is fast or the ash-gas ratio is small, the opening of the stroke valve is reduced; The adjustment unit is used to adjust the opening of the travel valve according to the gas volume adjustment method.

9. A computer device, characterized in that: The computer device comprises a processor and a memory: The memory is used to store a computer program and transmit the computer program to the processor; The processor is configured to execute the method according to any one of claims 1 to 7 according to the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method according to any one of claims 1 to 7.

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