A multipurpose intelligent bit return device

By designing a new type of intelligent position return device, the problems of damper not opening and closing properly and the inability of traditional devices to measure displacement have been solved. This has enabled intelligent monitoring and visual operation of damper opening, improving equipment operating efficiency and troubleshooting efficiency.

CN114353118BActive Publication Date: 2026-04-17BEIFANG WEIJIAMAO COAL POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIFANG WEIJIAMAO COAL POWER CO LTD
Filing Date
2021-11-30
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In existing technologies, malfunctions caused by improper damper opening and closing in thermal equipment can affect the start-up and load adjustment of coal mills. Furthermore, traditional mechanical position return devices cannot effectively measure the displacement of connecting rods, resulting in inaccurate measurement of the damper opening.

Method used

A novel multi-purpose intelligent position return device is designed, including a data acquisition component and a processing component. The data acquisition component acquires the displacement of the cylinder through a robotic arm and a sampling pulley, and displays and outputs switch and analog signals in real time through a motherboard module and a digital display module.

Benefits of technology

It enables intelligent monitoring and visual operation of damper opening, reduces maintenance workload, and improves equipment operating efficiency and troubleshooting efficiency, making it suitable for secondary equipment in industrial sites.

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Abstract

This invention discloses a novel multi-purpose intelligent position tracking device. The device includes a data acquisition component 100 mounted on a cylinder, comprising a fixed disk, a robotic arm connected to the fixed disk, and sampling pulleys mounted on the robotic arm. A processing component, connected to the data acquisition component, includes a mainboard module, a digital display module connected to the mainboard module, and a power supply module connected to both the digital display module and the mainboard module. This invention solves the problem of operator monitoring, achieving dual functionality (outputting both digital and analog signals), intelligent visual programmable operation, and the ability to adapt to special working conditions. The device employs a separate design for vulnerable modules, including sensors, facilitating maintenance and replacement of damaged modules, reducing maintenance costs, and significantly improving fault diagnosis efficiency. Its functionality can be expanded according to different usage environments, making it a suitable secondary device for industrial sites.
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Description

Technical Field

[0001] This invention relates to the technical field of thermoelectric equipment, and more particularly to a novel multi-purpose intelligent position return device. Background Technology

[0002] In the daily troubleshooting of thermal power plants and boilers, a common type of defect often plagues us: the main damper is not properly switched on. The inability of the hot and cold dampers to be switched on properly leads to the failure of the remote panel gate switch status, which affects the start-up and operation of the coal mill and, in turn, affects the start-up or load adjustment of the unit.

[0003] Currently, thermal measurement uses two sensors, one corresponding to the closed position and the other to the open position. In daily use, mechanical jamming of the cylinder or door often causes the sensor positions to shift from a fixed location, making it difficult to effectively convey positional information to operators. The current improvement strategy involves replacing the existing sensor switches with those with a holding function and adjusting their installation positions, which has already been implemented on some dampers. Operational observations have reduced the aforementioned issues, but occasional switch malfunctions have resulted in simultaneous occurrences of fully open and fully closed signals, causing the main damper's closing feedback signal to fail to lock, preventing the damper from closing.

[0004] Meanwhile, in reality, the exposed portion of the connecting rod between the cylinder and the gate is very short, far less than the displacement of the connecting rod between the cylinder and the gate during normal operation. Therefore, it is impossible to use a traditional mechanical LVDT (position return device) to measure the displacement of the gate opening. This necessitates a novel mechanical device to cleverly measure the displacement of the connecting rod, thereby reflecting the gate opening. Therefore, a new intelligent position return device was conceived and developed, capable of outputting both analog signals to determine the opening position and digital signals for local intelligent display. Its functions include visualized operation and intelligent adjustment, making it easier for operation and thermal engineers to coordinate and handle special operating conditions, increasing convenience and efficiency while reducing the maintenance workload of thermal maintenance personnel. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the above-mentioned novel multi-purpose intelligent position return devices, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a novel multi-purpose intelligent position return device, which can output analog signals to determine the opening position of the door panel, and can also output switch signals for local intelligent digital display.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a novel multi-purpose intelligent position return device, comprising a data acquisition component mounted on a cylinder, including a fixed plate, a robotic arm connected to the fixed plate, and a sampling pulley mounted on the robotic arm; and a processing component connected to the data acquisition component, including a mainboard module, a digital display module connected to the mainboard module, and a power supply module connected to the digital display module and the mainboard module.

[0009] In a preferred embodiment of the novel multi-purpose intelligent positioning device of the present invention, the fixing plate is fixed on the cylinder fixing end.

[0010] As a preferred embodiment of the novel multi-purpose intelligent positioning device of the present invention, the robotic arms are provided in a plurality of units, which are equidistantly arranged on the fixed plate. The robotic arms are located around the telescopic end of the cylinder. The robotic arms also include a sliding part, a spring disposed inside the sliding part, and a data interface disposed outside the sliding part.

[0011] In a preferred embodiment of the novel multi-purpose intelligent positioning device of the present invention, the robotic arm is disposed within the sliding part and slidably connected thereto, the spring is disposed within the sliding part, a compression cavity is provided within the sliding part, the spring is disposed within the compression cavity, one end of the spring is connected to the inner wall of the compression cavity, and the other end is connected to the robotic arm, and the spring is in a compressed state in its natural state.

[0012] As a preferred embodiment of the novel multi-purpose intelligent position return device of the present invention, the sampling pulley is disposed at the end of the robotic arm, the sampling pulley is in close contact with the side wall of the cylinder telescopic arm, and sampling points are uniformly perforated on the sampling pulley.

[0013] In a preferred embodiment of the novel multi-purpose intelligent position return device of the present invention, the data interface is connected to the sampling pulley and sends sampling point data to the mainboard module in the processing component.

[0014] In a preferred embodiment of the novel multi-purpose intelligent position return device of the present invention, the main board module further includes a protection circuit, a display interface, a power interface, and a processor. The display interface is connected to the digital display module, the power interface is connected to the power module, and the processor receives data from the sampling pulley and calculates the displacement of the cylinder extension rod.

[0015] As a preferred embodiment of the novel multi-purpose intelligent positioning device of the present invention, the digital display module provides an intelligent visual programmable operation panel and displays the door opening degree and switch status.

[0016] In a preferred embodiment of the novel multi-purpose intelligent position return device of the present invention, the power supply module adopts a pin-type design.

[0017] As a preferred embodiment of the novel multi-purpose intelligent position return device of the present invention, each sampling pulley on the robotic arm is connected to a data interface, each data interface is set independently, and the sampling data is sent to the processing component in parallel.

[0018] The beneficial effects of this invention are:

[0019] This invention solves the monitoring problem for operators, achieving dual functionality (outputting both digital and analog signals), intelligent visual programmable operation, and the ability to adapt to special working conditions. The invention employs a separate design for vulnerable modules, including sensors, facilitating maintenance and replacement of damaged modules, reducing maintenance costs, and significantly improving fault-finding efficiency. Its functionality can be expanded to suit different usage environments, making it a suitable secondary device for industrial sites. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of the novel multi-purpose intelligent position return device of the present invention.

[0022] Figure 2 This is a schematic diagram of the acquisition component structure of the novel multi-purpose intelligent position return device of the present invention.

[0023] Figure 3 This is a cross-sectional view of the acquisition component structure of the novel multi-purpose intelligent position return device of the present invention.

[0024] Figure 4 This is a schematic diagram of the processing component structure of the novel multi-purpose intelligent position return device of the present invention. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1

[0030] Reference Figures 1-3 This is the first embodiment of the present invention, which provides a novel multi-purpose intelligent position tracking device. The device includes a data acquisition component 100 mounted on a cylinder, comprising a fixed disk 101, a robotic arm 102 connected to the fixed disk 101, and a sampling pulley 103 mounted on the robotic arm 102; and a processing component 200 connected to the data acquisition component 100, comprising a mainboard module 201, a digital display module 202 connected to the mainboard module 201, and a power supply module 203 connected to the digital display module 202 and the mainboard module 201.

[0031] The acquisition component 100 collects and quantifies the extension and retraction of the cylinder telescopic rod, converts it into data, and sends it to the main board module 201. The main board module 201 analyzes the data. The fixed plate 101 installs the device on the cylinder. The robotic arm 102 places the sampling pulley 103 close to the cylinder telescopic rod and moves with it, converting the mechanical displacement into an electrical signal and sending it to the processing component 200. The main board module 201 then calculates the displacement.

[0032] A fixed plate 101 is fixed to the fixed end of the cylinder. Several robotic arms 102 are provided, equidistantly arranged on the fixed plate 101. Each robotic arm 102 is located around the telescopic end of the cylinder. Each robotic arm 102 also includes a sliding part 102a, a spring 102b disposed inside the sliding part 102a, and a data interface 102c disposed outside the sliding part 102a. Part of the robotic arm 102 is disposed within and slidably connected to the sliding part 102a. The spring 102b is disposed within the sliding part 102a, and a compression chamber 102a-1 is formed within the sliding part 102a-1. One end of the spring 102b is connected to the inner wall of the compression chamber 102a-1, and the other end is connected to the robotic arm 102. The spring 102b is in a compressed state in its natural state. The sampling pulley 103 is located at the end of the robotic arm 102. The sampling pulley 103 is in close contact with the side wall of the cylinder telescopic arm. Sampling points are evenly punched on the sampling pulley 103.

[0033] Furthermore, the spring 102b presses the robotic arm 102 into the sliding part 102a, ensuring that its end sampling pulley 103 is in close contact with the cylinder telescopic arm. The compression chamber 102a-1 can fix the robotic arm 102 onto the cylinder. The spring 102b applies force to the robotic arm 102 in the direction of the center of the cylinder telescopic rod, ensuring that the sampling pulley 103 and the telescopic rod are in close contact. The fixing plate 101 also ensures that the angle of the sampling pulley 103 is fixed, allowing for stable sampling. The sampling principle is that the extension and retraction of the rod drives the sampling pulley 103 to generate mechanical displacement. The sensor converts the mechanical displacement into an electrical signal and sends it to the processing component 200, which calculates the specific displacement.

[0034] Based on the required accuracy, the sampling pulley 103 is divided into equal parts (by counting the holes drilled in the pulley). As the number of holes accumulates during the movement of the sampling pulley 103, the movement length can be calculated based on the circumference of the pulley and the number of holes (with a slight error). This method is relatively simple and suitable for long-distance telescopic rods. Furthermore, because the opening process of the door panel is often not uniform due to jamming, the speed change can be judged by the strength of the mechanical force generated by the sampling pulley 103. Given the parameters of the pulley, the displacement can be calculated using functions and integral relationships. This method is more expensive and involves a larger workload, making it suitable for short-distance telescopic rods.

[0035] In addition to the mechanical structure that provides stable support for the polygonal shape, multiple sensors can still operate normally when one sensor fails, without affecting normal sampling and improving the overall lifespan.

[0036] Example 2

[0037] Reference Figure 4This is the second embodiment of the present invention, which differs from the first embodiment in that: the data interface 102c is connected to the sampling pulley 103 and sends sampling point data to the mainboard module 201 within the processing component 200. The mainboard module 201 further includes a protection circuit 201a, a display interface 201b, a power interface 201c, and a processor 201d. The display interface 201b is connected to the digital display module 202, the power interface 201c is connected to the power module 203, and the processor 201d receives data from the sampling pulley 103 and calculates the displacement of the cylinder extension rod. The digital display module 202 provides an intelligent visual programmable operation panel and displays the door opening degree and switch status. The power module 203 is a pin-type module. Each sampling pulley 103 on the robotic arm 102 is connected to a data interface 102c, and each data interface 102c is independently configured, sending sampling data to the processing component 200 in parallel.

[0038] Compared to Embodiment 1, the motherboard module 201 further features a rich array of interfaces, including sensor interfaces, output interfaces (including on / off, 4-20mA analog output interfaces, and power terminals), and, depending on the selected processor 201d, in addition to a storage module and necessary circuitry (including protection circuit 201a), an AD converter, voltage regulation and filtering circuitry, and timing circuitry. The power module 203 (voltage conversion, providing a suitable and stable operating voltage to the board) on the power terminal uses a pin-type connector for easy fault replacement. It also includes a matching LCD display interface, a 485 debugging interface, and a pin-type operation panel.

[0039] Within the specified indentation range, the distance traveled by the sampling pulley 103 can be converted into an opening degree, which is output through a current of 4–20 mA. The processor 201d determines the direction by judging the positive or negative sign of the switch logic indentation. When the preset indentation is met, a switch signal is output and sent out through the open and closed output terminals. (The preset indentation can be changed according to the field equipment conditions).

[0040] The 202 digital display module is of a reasonable size. Besides displaying content correctly, it features a backlight function with sleep mode (an optional LCD digital display module offers excellent display quality at a relatively low cost). The main display shows the door's opening degree and open / closed status. This solves the monitoring problem for operators, achieving dual functionality (outputting both digital and analog signals), intelligent visual programmable operation, and the ability to handle special applications in specific working conditions. The module utilizes a separate design for vulnerable modules, including sensors, facilitating maintenance and replacement of damaged modules and reducing maintenance costs. Its functionality can be expanded to suit different usage environments. These are the advantages of this product.

[0041] The remaining structure is the same as that in Example 1.

[0042] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0044] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-purpose intelligent position return device, characterized in that: include, The acquisition component (100) is mounted on a cylinder and includes a fixed plate (101), a robotic arm (102) connected to the fixed plate (101), and a sampling pulley (103) mounted on the robotic arm (102). The processing component (200), connected to the acquisition component (100), includes a motherboard module (201), a digital display module (202) connected to the motherboard module (201), and a power supply module (203) connected to the digital display module (202) and the motherboard module (201). The fixed plate (101) is fixed on the cylinder fixed end; The robotic arms (102) are provided in a plurality of units, which are equidistantly arranged on the fixed disk (101). The robotic arms (102) are located around the cylinder extension end. The robotic arms (102) also include a sliding part (102a), a spring (102b) disposed inside the sliding part (102a), and a data interface (102c) disposed outside the sliding part (102a). The robotic arm (102) is partially disposed within the sliding part (102a) and slidably connected thereto. The spring (102b) is disposed within the sliding part (102a). A compression chamber (102a-1) is provided within the sliding part (102a). The spring (102b) is disposed within the compression chamber (102a-1). One end of the spring (102b) is connected to the inner wall of the compression chamber (102a-1), and the other end is connected to the robotic arm (102). The spring (102b) is in a compressed state in its natural state. The sampling pulley (103) is located at the end of the robotic arm (102). The sampling pulley (103) is in close contact with the side wall of the cylinder telescopic arm. Sampling points are evenly punched on the sampling pulley (103). Each sampling pulley (103) on the robotic arm (102) is connected to a data interface (102c). Each data interface (102c) is set independently and sends sampling data to the processing component (200) in parallel.

2. The multi-purpose intelligent position return device as described in claim 1, characterized in that: The data interface (102c) is connected to the sampling pulley (103) and sends the sampling point data to the motherboard module (201) in the processing component (200).

3. The multi-purpose intelligent position return device as described in claim 2, characterized in that: The motherboard module (201) also includes a protection circuit (201a), a display interface (201b), a power interface (201c), and a processor (201d). The display interface (201b) is connected to the digital display module (202), the power interface (201c) is connected to the power module (203), and the processor (201d) receives data from the sampling pulley (103) and calculates the displacement of the cylinder extension rod.

4. The multi-purpose intelligent position return device as described in claim 3, characterized in that: The digital display module (202) provides an intelligent visual programmable operation panel and displays the door panel opening degree and switch status.

5. The multi-purpose intelligent position return device as described in claim 4, characterized in that: The power module (203) is a pin-type module.

Citation Information

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