Proportioning and mixing management and control method and system applied to bulk cargo wharf ship unloading equipment

Abstract

The invention provides a proportioning and mixing management and control method and system applied to bulk cargo wharf ship unloading equipment, and the method comprises the steps: respectively calculating the feeding speed corresponding to each ship unloading equipment according to the proportioning required by mixing; calculating corresponding delay time according to unloading material hatch positions corresponding to different ship unloading devices; monitoring the belt material flow and the material mixing ratio of each unshipping device after feeding in real time, and comparing the material flow and the material mixing ratio with a preset material mixing ratio value; and when the real-time material mixing ratio is not matched with the preset material mixing ratio, the feeding speed of the corresponding ship unloading equipment is adjusted through the feeding speed adjusting coefficient. The system comprises the feeding analysis and calculation unit, the feeding monitoring unit and the wharf belt material conveying unit, the cost is saved, meanwhile, the later-period matching and mixing operation time is saved, and the overall operation efficiency of the bulk material wharf is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of unloading equipment, and in particular to a proportioning and mixing control method and system applied to bulk material terminal unloading equipment. Background Art

[0002] As an important place for loading and unloading bulk cargo, how to improve the overall operational efficiency of bulk cargo terminals is a major challenge facing terminal operators. Some bulk cargo terminals, especially power plant self-owned terminals, often need to mix high-quality coal and ordinary coal loaded in different compartments of bulk cargo ships to reduce overall operating costs from the perspective of overall cost reduction and efficiency improvement. Therefore, it is necessary to provide a technical solution for automatically mixing the unloaded materials according to the proportion requirements at the bulk cargo terminal to save costs and improve operating efficiency. Summary of the invention

[0003] According to the technical problems raised above, a proportioning and mixing control method and system for bulk material terminal unloading equipment is provided. The present invention mainly utilizes a feeding analysis and calculation unit, a feeding monitoring unit and a terminal belt conveyor unit, and according to the proportioning and mixing requirements, monitors the feeding flow of the material unloading hatch in real time, and dynamically adjusts the feeding speed of various materials in real time through calculation, thereby realizing automatic proportioning and mixing at the terminal end, saving users the cost of purchasing professional mixing equipment, and also saving the operation time of later proportioning and mixing, thereby improving the overall operation efficiency of the bulk material terminal.

[0004] The technical means adopted by the present invention are as follows:

[0005] A proportioning and mixing control method applied to bulk material terminal unloading equipment comprises:

[0006] According to the required mixing ratio, calculate the feeding speed corresponding to each unloading equipment;

[0007] Calculate the corresponding delay time according to the unloading material hatch positions corresponding to different unloading equipment;

[0008] Real-time monitoring of the belt material flow and mixing ratio of each unloading device after feeding, and comparison with the preset mixing ratio value;

[0009] When the real-time mixing ratio does not match the preset mixing ratio, the feeding speed of the corresponding unloading equipment is adjusted by the feeding speed adjustment coefficient.

[0010] Furthermore, the calculation of the feeding speed corresponding to each ship unloading equipment includes:

[0011] Sort the n unloading hatches according to their distance from the yard from far to near, mark the nearest unloading hatch as the nth unloading hatch, each unloading hatch corresponds to a type of material, and the mixing ratio value K corresponding to the i-th type of material in the mixing demand ratio is i , calculate the feeding speed V corresponding to the i-th unloading material hatch i :

[0012]

[0013] Among them, V i额 W represents the rated feeding rate of the i-th unloading hatch; 码头额定 W is the rated conveying material flow value of the terminal belt; i额定 Represents the rated feed flow value of the i-th unloading material hatch.

[0014] Furthermore, the delay time is calculated as follows:

[0015] T i =(S i -S i-1 ) / V0;

[0016] Among them, T i It represents the delay time required for the i-th unloading hatch to open after the i-1-th unloading hatch is opened for feeding, S i represents the hatch position of the i-th unloading hatch, S i-1 represents the hatch position of the i-1th material unloading hatch, and V0 represents the rated operating speed of the terminal belt.

[0017] Furthermore, the feeding speed adjustment coefficient is used to adjust the feeding speed of the corresponding ship unloading equipment, specifically including:

[0018] When (W i -W i-1 ) / W 码头 >k i hour:

[0019] V a =-V n额定 *a;

[0020] When (W i -W i-1 ) / W 码头 <K i hour;

[0021] V a =V n额定 *a;

[0022] Among them, W iW represents the dock belt material flow value of the i-th unloading material hatch; i-1 W represents the dock belt material flow value of the i-1th unloading material hatch; 码头 Indicates the total material flow value of the terminal belt; k i Indicates the mixing ratio of the i-th type of material; V a Indicates the feed speed adjustment value; V a Indicates the rated speed of the device; a indicates the feed speed adjustment coefficient.

[0023] Corresponding to the proportioning and mixing control method applied to bulk material terminal unloading equipment in the present application, the present application also provides a proportioning and mixing control system applied to bulk material terminal unloading equipment, including: a feeding analysis and calculation unit, a feeding monitoring unit and a terminal belt conveyor unit, wherein:

[0024] The feeding analysis and calculation unit is arranged on the material unloading hatch and is used to calculate the feeding speed corresponding to each unloading device according to the ratio of the mixing requirements; the feeding analysis and calculation unit is also used to calculate the corresponding delay time according to the positions of the material unloading hatches corresponding to different unloading devices;

[0025] The feeding monitoring unit is arranged on the unloading material hatch to monitor the belt material flow and mixing ratio of each unloading device after feeding in real time, and compare them with the preset mixing ratio value;

[0026] The wharf belt conveyor unit is installed in the central control room and is used to adjust the feeding speed of the corresponding unloading equipment through the feeding speed adjustment coefficient when the real-time mixing ratio does not match the preset mixing ratio.

[0027] Furthermore, the feeding analysis and calculation unit includes a PLC module, a frequency conversion driver, and a vibrating feeder. The PLC module controls the frequency conversion driver through Profibus DP bus communication, thereby driving the vibrating feeder to feed materials to the wharf belt conveyor unit at different speeds.

[0028] Furthermore, the feeding monitoring unit includes a belt scale device to monitor the real-time material flow on the dock belt, and transmit the real-time monitoring data to the dock belt feeding unit via Profinet bus communication.

[0029] Furthermore, the wharf belt conveyor unit includes: a wharf belt, a wharf belt driving device and a central control PLC; the central control PLC controls the wharf belt driving device through Profibus DP bus communication, thereby driving the wharf belt to operate and transmit the materials unloaded by the wharf unloading equipment to the rear yard.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The proportioning and mixing control method and system for bulk material terminal unloading equipment provided by the present invention respectively calculates the feeding speed corresponding to each unloading equipment according to the proportion of mixing requirements; calculates the corresponding delay time according to the unloading material hatch positions corresponding to different unloading equipment; monitors the belt material flow and the mixing ratio of each unloading equipment after feeding in real time, and compares them with the preset mixing ratio value; when the real-time mixing ratio does not match the preset mixing ratio, adjusts the feeding speed of the corresponding unloading equipment through the feeding speed adjustment coefficient, so as to realize automatic proportioning and mixing at the terminal end, which saves the cost of purchasing professional mixing equipment for users, and also saves the operation time of later proportioning and mixing, thereby improving the overall operation efficiency of the bulk material terminal.

[0032] Based on the above reasons, the present invention can be widely promoted in the fields of unloading equipment and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 The present invention is a flow chart of the proportioning and mixing control method applied to bulk material terminal unloading equipment.

[0035] Figure 2 This is a structural diagram of the proportioning and mixing control system used in bulk material terminal unloading equipment in the present invention.

[0036] Figure 3 This is a system architecture diagram of the present invention.

[0037] Figure 4 This is a structural diagram of the feed analysis and calculation unit in the present invention.

[0038] Figure 5 This is a structural diagram of the feeding monitoring unit in the present invention.

[0039] Figure 6 This is a structural diagram of the wharf belt conveyor unit in the present invention. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0047] like Figure 1 As shown, the present invention provides a proportioning and mixing control method applied to bulk material terminal unloading equipment, comprising:

[0048] According to the required mixing ratio, calculate the feeding speed corresponding to each unloading equipment;

[0049] In specific implementation, as a preferred embodiment of the present invention, the calculation of the feeding speed corresponding to each ship unloading equipment includes:

[0050] Sort the n unloading hatches according to their distance from the yard from far to near, mark the nearest unloading hatch as the nth unloading hatch, each unloading hatch corresponds to a type of material, and the mixing ratio value K corresponding to the i-th type of material in the mixing demand ratio is i , calculate the feeding speed V corresponding to the i-th unloading material hatch i :

[0051]

[0052] Among them, V i额 W represents the rated feeding rate of the i-th unloading hatch; 码头额定 W is the rated conveying material flow value of the terminal belt; i额定 Represents the rated feed flow value of the i-th unloading material hatch.

[0053] Calculate the corresponding delay time according to the unloading material hatch positions corresponding to different unloading equipment;

[0054] In specific implementation, as a preferred embodiment of the present invention, the delay time is calculated as follows:

[0055] T i =(S i -S i-1 ) / V0;

[0056] Among them, T i It represents the delay time required for the i-th unloading hatch to open after the i-1-th unloading hatch is opened for feeding, S i represents the hatch position of the i-th unloading hatch, S i-1 represents the hatch position of the i-1th material unloading hatch, and V0 represents the rated operating speed of the terminal belt.

[0057] Real-time monitoring of the belt material flow and mixing ratio of each unloading device after feeding, and comparison with the preset mixing ratio value;

[0058] When the real-time mixing ratio does not match the preset mixing ratio, the feeding speed of the corresponding unloading equipment is adjusted by the feeding speed adjustment coefficient.

[0059] In specific implementation, as a preferred embodiment of the present invention, the feeding speed of the corresponding ship unloading equipment is adjusted by the feeding speed adjustment coefficient, specifically including:

[0060] When (W i -W i-1 ) / W 码头 >K i hour:

[0061] V a =-V n额定 *a;

[0062] When (W i -W i-1 ) / W 码头 <K i hour;

[0063] V a =V n额定 *a;

[0064] Among them, W i W represents the dock belt material flow value of the i-th unloading material hatch; i-1 W represents the dock belt material flow value of the i-1th unloading material hatch; 码头 Indicates the total material flow value of the terminal belt; K i Indicates the mixing ratio of the i-th type of material; V a Indicates the feed speed adjustment value; V aIndicates the rated speed of the device; a indicates the feed speed adjustment coefficient. In practice, a is 3%-5%. When i is 1, W i-1 =0.

[0065] Corresponding to the proportioning and mixing control method applied to bulk material terminal unloading equipment in the present application, the present application also provides a proportioning and mixing control system applied to bulk material terminal unloading equipment, including: a feeding analysis and calculation unit, a feeding monitoring unit and a terminal belt conveyor unit, wherein:

[0066] The feeding analysis and calculation unit is arranged on the material unloading hatch and is used to calculate the feeding speed corresponding to each unloading device according to the ratio of the mixing requirements; the feeding analysis and calculation unit is also used to calculate the corresponding delay time according to the positions of the material unloading hatches corresponding to different unloading devices;

[0067] The feeding monitoring unit is arranged on the unloading material hatch, and is used to monitor the belt material flow and mixing ratio of each unloading equipment after feeding in real time, and compare it with the preset mixing ratio value;

[0068] The wharf belt conveyor unit is installed in the central control room and is used to adjust the feeding speed of the corresponding unloading equipment through the feeding speed adjustment coefficient when the real-time mixing ratio does not match the preset mixing ratio.

[0069] In specific implementation, as a preferred embodiment of the present invention, the feeding analysis and calculation unit includes a PLC module, a frequency conversion drive, and a vibrating feeder. The PLC module controls the frequency conversion drive through Profibus DP bus communication, and then drives the vibrating feeder to feed materials to the terminal belt conveyor unit at different speeds.

[0070] In specific implementation, as a preferred embodiment of the present invention, the feeding monitoring unit includes a belt scale device to monitor the real-time material flow on the dock belt, and transmit the real-time monitoring data to the dock belt feeding unit via Profinet bus communication.

[0071] In specific implementation, as a preferred embodiment of the present invention, the dock belt conveyor unit includes: a dock belt, a dock belt driving device and a central control PLC; the central control PLC controls the dock belt driving device through Profibus DP bus communication, and then drives the dock belt to operate, and transmits the materials unloaded by the dock unloading equipment to the rear yard.

[0072] Example

[0073] like Figure 1As shown, the present invention provides a proportioning and mixing control method and system applied to bulk material terminal unloading equipment. In this embodiment, three unloading equipments are used to unload three different materials for mixing as an example for explanation. The equipment arranged from the far end to the near end of the bulk material terminal is numbered 1#-3# in sequence, and the materials loaded on the bulk cargo ship hatch from the far end to the near end are numbered as Class 1-Class 3 materials in sequence.

[0074] Step 1: The bulk material terminal unloading operation process is started, and the proportioning and mixing control system applied to the bulk material terminal unloading equipment is activated.

[0075] Step 2: The management and control system controls the start-up of the dock belt in the dock belt conveyor unit.

[0076] Step 3: The management and control system controls the unloading equipment at the farthest end of the terminal to move to the hold position S1 for loading Class 1 materials; the unloading equipment in the middle position moves to the hold position S2 for loading Class 2 materials; and the unloading equipment at the nearest end of the terminal moves to the hold position S3 for unloading Class 3 materials.

[0077] Step 4: The management and control system controls the farthest unloading equipment to start unloading operations. According to the material ratio value K1 corresponding to Class 1 material in the proportion mixing requirement, the feeding speed V1 corresponding to the farthest unloading equipment is calculated and sent to the feeding analysis and calculation unit of the farthest unloading equipment. The farthest unloading equipment starts unloading materials according to this feeding speed.

[0078] Step 5: After the farthest unloading equipment starts feeding, the management and control system delays for T2 time and then controls the middle unloading equipment to start unloading operations.

[0079] Step 6: After the middle unloading equipment starts feeding, the management and control system delays for T3 time and then controls the nearest unloading equipment to start unloading operations.

[0080] Step 7: The management and control system starts the real-time monitoring function of the proportioning and mixing, monitors the unloading material flow of the three unloading equipment in real time, and compares it with the corresponding mixing ratio value. When deviation occurs, the feeding speed of the corresponding unloading equipment is adjusted immediately.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A proportioning and mixing control method applied to bulk material terminal unloading equipment, characterized in that: include: According to the required mixing ratio, calculate the feeding speed corresponding to each unloading equipment; Calculate the corresponding delay time according to the unloading material hatch positions corresponding to different unloading equipment; Real-time monitoring of the belt material flow and mixing ratio of each unloading device after feeding, and comparison with the preset mixing ratio value; When the real-time mixing ratio does not match the preset mixing ratio, the feeding speed of the corresponding unloading equipment is adjusted by the feeding speed adjustment coefficient.

2. The proportioning and mixing control method applied to bulk material terminal unloading equipment according to claim 1 is characterized in that: The calculation of the feeding speed corresponding to each ship unloading equipment includes: Sort the n unloading hatches according to their distance from the yard from far to near, mark the nearest unloading hatch as the nth unloading hatch, each unloading hatch corresponds to a type of material, and the mixing ratio value K corresponding to the i-th type of material in the mixing demand ratio is i , calculate the feeding speed V corresponding to the i-th unloading material hatch i : Among them, V i额 W represents the rated feeding rate of the i-th unloading hatch; 码头额定 W is the rated conveying material flow value of the terminal belt; i额定 Represents the rated feed flow value of the i-th unloading material hatch.

3. The proportioning and mixing control method applied to bulk material terminal unloading equipment according to claim 1 is characterized in that: The delay time is calculated as follows: T i =(S i -S i-1 ) / V0; Among them, T i It represents the delay time required for the i-th unloading hatch to open after the i-1-th unloading hatch is opened for feeding, S i represents the hatch position of the i-th unloading hatch, S i-1 represents the hatch position of the i-1th material unloading hatch, and V0 represents the rated operating speed of the terminal belt.

4. The proportioning and mixing control method applied to bulk material terminal unloading equipment according to claim 1 is characterized in that: The feeding speed adjustment coefficient is used to adjust the feeding speed of the corresponding ship unloading equipment, specifically including: When (W i -W i-1 ) / W 码头 >K i hour: In a =-V n额定 *a; When (W i -W i-1 ) / W 码头 <K i hour; In a =V n额定 *a; Among them, W i W represents the dock belt material flow value of the i-th unloading material hatch; i-1 W represents the dock belt material flow value of the i-1th unloading material hatch; 码头 Indicates the total material flow value of the terminal belt; K i Indicates the mixing ratio of the i-th type of material; V a Indicates the feed speed adjustment value; V a Indicates the rated speed of the device; a indicates the feed speed adjustment coefficient.

5. A proportioning and mixing control system for bulk material terminal unloading equipment implemented based on the proportioning and mixing control method for bulk material terminal unloading equipment according to any one of claims 1 to 4, characterized in that: include: Feeding analysis and calculation unit, feeding monitoring unit and terminal belt conveyor unit, including: The feeding analysis and calculation unit is arranged on the material unloading hatch and is used to calculate the feeding speed corresponding to each unloading device according to the ratio of the mixing requirements; the feeding analysis and calculation unit is also used to calculate the corresponding delay time according to the positions of the material unloading hatches corresponding to different unloading devices; The feeding monitoring unit is arranged on the unloading material hatch, and is used to monitor the belt material flow and mixing ratio of each unloading equipment after feeding in real time, and compare it with the preset mixing ratio value; The wharf belt conveyor unit is installed in the central control room and is used to adjust the feeding speed of the corresponding unloading equipment through the feeding speed adjustment coefficient when the real-time mixing ratio does not match the preset mixing ratio.

6. The proportioning and mixing control system applied to bulk material terminal unloading equipment according to claim 5 is characterized in that: The feeding analysis and calculation unit includes a PLC module, a frequency conversion driver, and a vibrating feeder. The PLC module controls the frequency conversion driver through Profibus DP bus communication, and then drives the vibrating feeder to feed materials to the wharf belt conveyor unit at different speeds.

7. The proportioning and mixing control system applied to bulk material terminal unloading equipment according to claim 5 is characterized in that: The feeding monitoring unit includes a belt scale device, which monitors the real-time material flow on the dock belt and transmits the real-time monitoring data to the dock belt feeding unit through Profinet bus communication.

8. The proportioning and mixing control system applied to bulk material terminal unloading equipment according to claim 5 is characterized in that: The wharf belt conveying unit includes: a wharf belt, a wharf belt driving device and a central control PLC; the central control PLC controls the wharf belt driving device through Profibus DP bus communication, thereby driving the wharf belt to operate and transmit the materials unloaded by the wharf unloading equipment to the rear yard.

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