An electrical valve positioner feedback connection plate

Abstract

The utility model discloses an electrical valve positioner feedback connecting plate relates to electrical valve positioner feedback device technical field, and it is connected with the first connecting hole of at least one for being used as the push rod shaft bolt connection of actuating mechanism to the one end of the plate body, and the second connecting hole of being used for the shaft feedback rod swing joint of valve positioner is established to the other end of the plate body, and the second connecting hole is round hole, and the aperture is greater than the diameter of shaft feedback rod, to form the rotation gap to solve the problem that there is no domestic pneumatic regulating valve and SERIAL YT -3300 series intelligent valve positioner special connecting piece at present, realizes the fusion conversion of domestic equipment and imported equipment, has the characteristics that the logic structure is simple, and the maintenance cost is extremely low, improves equipment maintenance quality, and promotes work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of feedback devices for electric valve positioners, and in particular to a feedback connection plate for an electric valve positioner. Background Technology

[0002] (I) Current Technological Status

[0003] In the field of feedback connection for electric valve positioners, there are already relevant patented technologies:

[0004] The "Shaft Feedback Device for Electric Valve Positioner" (application number 201310317840.6, publication number CN 103363186 A) of Changshu Huaxia Instrument Co., Ltd. is connected between the positioner shaft and the rotary actuator shaft of the valve positioner. It includes upper and lower feedback rods, which are connected by bolts. There is a certain margin for rotation, and the rotation ratio can be adjusted.

[0005] Bi Yingming's "A Valve Positioner for Control Valves" (application number 201620046389.8, publication number CN205479671 U) includes a body and a feedback rod. The body is connected to a bracket, a cylinder is installed under the bracket, a gate is located under the valve stem, the body is provided with an air source inlet, and the feedback rod is installed in the cavity of the bracket. The versatility is improved by setting the bracket.

[0006] The "Universal Mounting Bracket for Electric Valve Positioner" (application number 201920916771.3, published CN210128121 U) by Xinchun Instrument (Changshu) Co., Ltd. includes a first connecting bracket, a rotating device that is snapped into the front and then into the second connecting bracket. Both brackets have four strip-shaped mounting holes on their front sides. The combination of various components makes it suitable for different positioners and improves its practicality.

[0007] (II) Problems and shortcomings of existing technologies

[0008] While the aforementioned patents have addressed some issues with the feedback connection of electric valve positioners, they generally suffer from complex feedback connection structures and logic control. In practical applications, these complex structures increase maintenance costs, hinder rapid adjustment and installation, and fail to meet the needs of metallurgical enterprises for dedicated connectors between domestically produced pneumatic control valves and the SERIAL YT-3300 series intelligent valve positioners. Utility Model Content

[0009] The purpose of this utility model is to provide a feedback connection plate for an electric valve positioner to solve the problem that there is currently no dedicated connection part for domestic pneumatic regulating valves and SERIAL YT-3300 series intelligent valve positioners, so as to realize the integration and conversion of domestic and imported equipment. It has the characteristics of simple logic structure and extremely low maintenance cost, thereby improving equipment maintenance quality and increasing work efficiency.

[0010] To achieve the above objectives, this utility model provides the following solution:

[0011] This utility model provides a feedback connection plate for an electric valve positioner, comprising: a plate body, one end of which has at least one first connection hole for bolting to the push rod shaft of an actuator, and the other end of which has a second connection hole for movably connecting to the shaft feedback rod of the valve positioner. The second connection hole is a circular hole with a diameter larger than that of the shaft feedback rod to form a rotational clearance.

[0012] Preferably, the plate has at least one bend, forming a first connecting section adapted to the mounting surface of the actuator push rod shaft, and a second connecting section adapted to the feedback rod of the valve positioner shaft.

[0013] Preferably, the bending angle of the bent portion is an obtuse angle.

[0014] Preferably, the first connecting hole is a strip-shaped hole.

[0015] Preferably, the plate body is further provided with a scale groove for indicating the stroke.

[0016] Preferably, the plate is integrally formed by stamping and bending of a metal sheet.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This invention provides a feedback connection plate for an electric valve positioner. Through a unique plate structure design, it not only achieves precise connection between domestically produced pneumatic control valves and the SERIAL YT-3300 series intelligent valve positioner, but also significantly simplifies the structure. Compared to existing technologies, this invention eliminates complex transmission components and redundant connection links, making the entire feedback connection structure more compact and rational. This simplified logic structure greatly reduces the equipment failure rate, decreases maintenance frequency and costs, and facilitates quick installation and adjustment by on-site personnel, effectively improving work efficiency. Furthermore, the graduated grooves on the plate provide intuitive indication of the stroke, greatly facilitating operation and further enhancing the practicality and reliability of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A plan view of the feedback connection plate of the electric valve positioner provided by this utility model;

[0021] Figure 2 A perspective view of the feedback connection plate of the electric valve positioner provided by this utility model;

[0022] In the diagram: 1. Plate; 2. First connecting hole; 3. Second connecting hole; 4. Bending section. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this utility model is to provide a feedback connection plate for an electric valve positioner to solve the problem that there is currently no dedicated connection part for domestic pneumatic regulating valves and SERIAL YT-3300 series intelligent valve positioners, so as to realize the integration and conversion of domestic and imported equipment. It has the characteristics of simple logic structure and extremely low maintenance cost, thereby improving equipment maintenance quality and increasing work efficiency.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This utility model provides a feedback connection plate for an electric valve positioner, such as... Figures 1-2 As shown, it includes: a plate 1, one end of which has at least one first connecting hole 2 for bolting to the actuator push rod shaft, and the other end of which has a second connecting hole 3 for movably connecting to the shaft feedback rod of the valve positioner. The second connecting hole 3 is a round hole with a diameter larger than that of the shaft feedback rod to form a rotation clearance. By setting the first connecting hole 2 and the second connecting hole 3 at both ends, a reliable connection with the actuator push rod shaft and the valve positioner shaft feedback rod can be achieved. The round hole design and rotation clearance setting of the second connecting hole 3 can meet the movement requirements of the shaft feedback rod, reduce mechanical stress, and ensure the smoothness and accuracy of the feedback action.

[0027] In a preferred embodiment, the plate 1 has at least one bend 4, which forms a first connecting section that is adapted to the mounting surface of the actuator push rod shaft and a second connecting section that is adapted to the feedback rod of the valve positioner shaft. The bend 4 allows the plate 1 to form connecting sections that are adapted to different components, which can better fit the mounting surface of the actuator push rod shaft and the installation requirements of the valve positioner shaft feedback rod, optimize the spatial layout, and improve the adaptability and structural stability of the overall assembly.

[0028] In a preferred embodiment, the bending angle of the bending portion 4 is an obtuse angle. The obtuse angle design can effectively reduce stress concentration at the bending point, enhance the structural strength and fatigue resistance of the plate 1, and avoid the risk of installation interference or scratches to operators that may be caused by sharp angles.

[0029] In a preferred embodiment, the first connecting hole 2 is a strip hole. The strip hole design allows for a certain range of position adjustment during bolt connection, which can adapt to dimensional deviations or assembly errors under different installation scenarios, thereby improving installation flexibility and compatibility.

[0030] In a preferred embodiment, the plate 1 is further provided with a scale groove for indicating the stroke. The scale groove can intuitively indicate the stroke position, making it easy to quickly read the motion stroke of the feedback connection plate during installation, debugging and daily maintenance, thereby improving the ease of operation and the monitorability of feedback accuracy.

[0031] In a preferred embodiment, the plate 1 is integrally formed by stamping and bending of a metal sheet. The integral forming process of stamping and bending a metal sheet can ensure the consistency of the structure and the overall strength of the plate 1, reduce the number of parts and assembly processes, reduce production costs, and at the same time improve the structural reliability and service life of the product.

[0032] The above-mentioned method for using the feedback connection plate of the electric valve positioner

[0033] The feedback connection plate of this electric valve positioner is easy and efficient to use. In practical applications, firstly, the end of the plate 1 with the first connection hole 2 is bolted to the actuator push rod shaft. Since the first connection hole 2 is designed as a slotted hole, the position can be flexibly adjusted within the range allowed by the slotted hole according to the actual position of the actuator push rod shaft during the connection process. This adapts to possible dimensional deviations or assembly errors in different installation scenarios, ensuring the stability and compatibility of the connection.

[0034] Next, the other end of plate 1, which has the second connecting hole 3, is movably connected to the shaft feedback rod of the valve positioner. The second connecting hole 3 is a circular hole with a diameter larger than that of the shaft feedback rod, creating a rotational clearance. This design allows the shaft feedback rod to move freely within the second connecting hole 3, meeting the movement requirements of the shaft feedback rod during valve positioning, effectively reducing the impact of mechanical stress on the connection, ensuring smooth and accurate feedback, and avoiding problems such as loose connection or inaccurate feedback caused by mechanical stress.

[0035] During the connection process, the bent portion 4 on plate 1 plays a crucial role. The bent portion 4 creates a first connecting section on plate 1 that mates with the mounting surface of the actuator push rod shaft, and a second connecting section that mates with the feedback rod of the valve positioner shaft. This design, adapting to different components, allows plate 1 to better fit the mounting surface of the actuator push rod shaft and the installation requirements of the valve positioner shaft feedback rod, optimizing the overall spatial layout and improving the overall assembly's adaptability and structural stability. Furthermore, the obtuse angle of the bent portion 4 effectively reduces stress concentration at the bend, enhancing the structural strength and fatigue resistance of plate 1, while avoiding the risk of installation interference or scratches to operators that might occur with sharp angles, ensuring safety and reliability in use.

[0036] Once the connection is complete, the scale groove on plate 1 begins to function. During installation and commissioning, operators can visually indicate the travel position by observing the scale groove, allowing for quick and accurate adjustment of the feedback connection plate's travel to achieve optimal operating conditions. During routine maintenance, the scale groove also facilitates quick reading of the feedback connection plate's travel, enabling timely detection of travel abnormalities and simplifying maintenance and adjustments, thus improving operational convenience and the monitorability of feedback accuracy.

[0037] Furthermore, since plate 1 is integrally formed by stamping and bending of metal sheet, this process ensures the consistency and overall strength of plate 1 structure, reduces the number of parts and assembly steps, not only reduces production costs, but also improves the structural reliability and service life of the product, enabling the feedback connection plate of the electric valve positioner to maintain stable performance during long-term use.

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A feedback connection plate for an electric valve positioner, characterized in that, It includes: a plate body, one end of which has at least one first connecting hole for bolting to the push rod shaft of the actuator, and the other end of which has a second connecting hole for movably connecting to the shaft feedback rod of the valve positioner. The second connecting hole is a round hole with a diameter larger than that of the shaft feedback rod to form a rotational clearance.

2. The feedback connection plate for the electric valve positioner according to claim 1, characterized in that, The plate has at least one bend, forming a first connecting section that matches the mounting surface of the actuator push rod shaft and a second connecting section that matches the feedback rod of the valve positioner shaft.

3. The feedback connection plate for the electric valve positioner according to claim 2, characterized in that, The bending angle of the bent portion is an obtuse angle.

4. The feedback connection plate for the electric valve positioner according to claim 1, characterized in that, The first connecting hole is a strip-shaped hole.

5. The feedback connection plate for the electric valve positioner according to claim 1, characterized in that, The plate is also provided with a scale groove for indicating the travel distance.

6. The feedback connection plate for the electric valve positioner according to any one of claims 1 to 5, characterized in that, The plate is formed by stamping and bending metal sheets in one piece.

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