Tool for auxiliary installation of feedback piece of positioner

Abstract

The utility model relates to a tool for assisting in installing a feedback piece of a positioner, and relates to the field of instrument control valves. According to the technical scheme, the auxiliary support, the magnetic block and the positioning bolt are arranged, the first positioning hole is formed in the bottom of the auxiliary support, the magnetic block is provided with the threaded through hole, and the screw rod part of the positioning bolt sequentially penetrates through the first positioning hole and the threaded through hole and then is magnetically inserted into the mounting hole of the mounting support of the pneumatic actuator; wherein the auxiliary support is provided with two sets of second positioning holes which are symmetrically formed, and the hole distance between the two sets of second positioning holes corresponds to the stroke of the pneumatic executing mechanism so that a feedback shaft of the positioner can be installed in an auxiliary mode. Under the condition, the device can be suitable for pneumatic actuating mechanisms with multiple stroke specifications, the positioner feedback piece can be quickly positioned and mounted, and the mounting consistency is high; when the pneumatic actuating mechanism is opened by 50%, the feedback rod can be ensured to be horizontal, and the linear adjusting performance of the positioner on the pneumatic actuating mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of instrument control valve technology, and in particular to a tooling for assisting in the installation of a positioner feedback component. Background Technology

[0002] As a key component of instrument control valves, the positioner's primary function is to work in conjunction with linear pneumatic control valves, precisely controlling the valve opening by receiving control signals from the controller. This precision is crucial for maintaining critical parameters in industrial processes such as pressure, flow rate, level, and temperature. The positioner converts the received control signal into a corresponding output signal through its internal mechanism, driving the pneumatic control valve. Once the control valve responds and moves, the change in valve stem position is fed back to the positioner, forming a closed-loop negative feedback circuit. This mechanism ensures that the valve can linearly adjust its opening according to the needs of the control system, thereby achieving precise control of process variables.

[0003] However, the performance of the positioner is highly dependent on the correct installation of the feedback element. If the feedback angle exceeds the positioner's rated operating range, or if it is asymmetrical in the horizontal direction, it will severely affect the positioner's working effect and the valve's linear regulation capability, ultimately leading to a decline in valve performance. Current calibration and installation methods mostly rely on manual operation by assembly personnel, which is inefficient and makes it difficult to ensure consistency in each installation. Summary of the Invention

[0004] The purpose of this invention is to provide a tooling for assisting in the installation of a positioner feedback component, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tooling for assisting in the installation of a positioner feedback component includes: an auxiliary bracket, a magnetic block, and a positioning bolt. The bottom of the auxiliary bracket has a first positioning hole, the magnetic block has a threaded through hole, and the screw portion of the positioning bolt passes through the first positioning hole and the threaded through hole in sequence and is magnetically inserted into the mounting hole of the mounting bracket of the pneumatic actuator.

[0007] The auxiliary support has two sets of symmetrically arranged second positioning holes, and the hole spacing of the two sets of second positioning holes corresponds to the stroke of the pneumatic actuator to assist in the installation of the feedback shaft of the positioner.

[0008] In one possible implementation, there is a gap between the magnetic block and the mounting bracket.

[0009] In one possible implementation, the positioning bolt has a tapered guide portion that facilitates magnetic insertion with the mounting hole.

[0010] In one possible implementation, the feedback shaft is connected to the half of the pneumatic actuator via a feedback bracket.

[0011] In one possible implementation, after the feedback shaft is installed, the tooling used to assist in the installation of the positioner feedback component is removed, and the positioner is fixed to the mounting bracket by a fixing bracket, so that the feedback shaft is inserted into the feedback rod groove of the positioner.

[0012] In one possible implementation, the feedback center line of the positioner coincides with the symmetrical center line of the two sets of second positioning holes.

[0013] In one possible implementation, the angle α formed by the center of each pair of symmetrical second positioning holes and the feedback center line of the positioner is located within the working swing angle range of the positioner.

[0014] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0015] By setting up an auxiliary bracket, a magnetic block, and a positioning bolt, the auxiliary bracket has a first positioning hole at its bottom, the magnetic block has a threaded through hole, and the screw of the positioning bolt passes through the first positioning hole and the threaded through hole in sequence before being magnetically inserted into the mounting hole of the mounting bracket of the pneumatic actuator. The auxiliary bracket has two sets of symmetrically arranged second positioning holes, the distance between which corresponds to the stroke of the pneumatic actuator, to assist in the installation of the positioner's feedback shaft. In this configuration, pneumatic actuators with multiple stroke specifications can be used, enabling rapid positioning and installation of the positioner's feedback component with high installation consistency. When the pneumatic actuator is at 50% opening, the feedback rod remains horizontal, improving the linear adjustment performance of the positioner on the pneumatic actuator. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This diagram illustrates the cooperation between a tooling for assisting in the installation of a positioner feedback component and a pneumatic actuator, according to an exemplary embodiment of the present invention.

[0018] Figure 2 This illustration shows a schematic diagram of the tooling used to assist in the installation of the feedback shaft of the locator feedback component, provided by an exemplary embodiment of the present invention.

[0019] Figure 3The diagram shows a top view of an auxiliary bracket for a tooling used to assist in the installation of a locator feedback component, provided in an exemplary embodiment of the present invention.

[0020] Figure 4 This illustration shows a side view of an auxiliary bracket for a tooling used to assist in the installation of a locator feedback component, provided in an exemplary embodiment of the present invention.

[0021] Figure 5 A schematic diagram of the structure of a magnetic block for a tooling used to assist in the installation of a positioner feedback component, provided in an exemplary embodiment of the present invention, is shown.

[0022] Figure 6 A schematic diagram of the positioning bolts of a tooling for assisting in the installation of a positioner feedback component, provided in an exemplary embodiment of the present invention, is shown.

[0023] Figure 7 This diagram shows a structural schematic of the positioner feedback components after all components have been installed, according to an exemplary embodiment of the present invention.

[0024] In the figure: 1. Auxiliary bracket; 11. First positioning hole; 12. Second positioning hole; 2. Magnetic block; 21. Threaded through hole; 3. Positioning bolt; 31. Conical guide part; 4. Pneumatic actuator; 41. Mounting bracket; 411. Mounting hole; 5. Feedback shaft; 6. Feedback bracket; 7. Half; 8. Fixed bracket; 9. Positioner; 10. Feedback rod. Detailed Implementation

[0025] 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.

[0026] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First, the tooling provided in this application for assisting in the installation of the positioner feedback component is used in the application of a linear-stroke pneumatic control valve. The linear-stroke pneumatic control valve mainly includes a pneumatic actuator, a valve body, and a positioner. Figure 1 , Figure 2 and Figure 7 The valve body is not shown; the main focus is on the drive components (i.e., the pneumatic actuator and positioner). The positioner feedback components primarily include a feedback shaft, a feedback bracket, and a feedback rod.

[0029] Figure 1 This diagram illustrates the cooperation between a tooling for assisting in the installation of a positioner feedback component and a pneumatic actuator, according to an exemplary embodiment of the present invention. Figure 2 This illustration shows a schematic diagram of the tooling used to assist in the installation of a positioner feedback component according to an exemplary embodiment of the present invention. The tooling includes: an auxiliary bracket 1, a magnetic block 2, and a positioning bolt 3. (See also...) Figure 4 The bottom of the auxiliary bracket 1 has a first positioning hole 11; please refer to Figure 5 The magnetic block 2 has a threaded through hole 21; the screw portion of the positioning bolt 3 passes through the first positioning hole 11 and the threaded through hole 21 in sequence and is magnetically inserted into the mounting hole 411 of the mounting bracket 41 of the pneumatic actuator 4; where, please refer to Figure 3 The auxiliary support 1 has two sets of symmetrically arranged second positioning holes 12. The hole spacing of the two sets of second positioning holes 12 corresponds to the stroke of the pneumatic actuator 4 to assist in the installation of the feedback shaft 5 of the positioner 9.

[0030] In this embodiment, the auxiliary bracket 1 serves as the core component of the entire tooling. Its bottom first positioning hole 11 works in conjunction with the threaded through hole 21 of the magnetic block 2 and the positioning bolt 3 to ensure that the auxiliary bracket is securely fixed to the mounting bracket 41 of the pneumatic actuator 4, thus providing a solid foundation for subsequent precise installation. The magnetic block 2 is connected to the mounting hole 411 via magnetic insertion, which not only simplifies the installation steps but also enhances the flexibility and adaptability of the tooling, enabling it to quickly respond to different installation requirements.

[0031] Of particular note, please refer to Figure 3The auxiliary bracket 1 features two symmetrically arranged second positioning holes 12, with the hole spacing increasing sequentially in one direction (for example, the leftmost two holes correspond to a 16mm stroke pneumatic actuator 4, and the rightmost two holes correspond to a 100mm stroke pneumatic actuator 4). This design is to precisely match different models or specifications of pneumatic actuators 4, thereby ensuring that the feedback shaft 5 can be accurately installed. The second positioning holes 12 are divided into upper and lower groups, corresponding to the valve's operating mode: for air-to-close valves, the feedback shaft 5 should be inserted... Figure 3 The upper middle set of second positioning holes 12; air-operated valve, the feedback shaft 5 is inserted Figure 3 A set of second positioning holes 12 in the lower middle section ensures that the feedback rod 10 is horizontal when the valve is in the 50% stroke position.

[0032] To elaborate further, please refer to Figure 1 There is a gap between the magnetic block 2 and the mounting bracket 41, which ensures that the tooling used to assist in the installation of the positioner feedback component is firmly attracted to the mounting bracket 41, and also facilitates the disassembly of the tooling.

[0033] Furthermore, please refer to Figure 6 The positioning bolt 3 has a tapered guide portion 31 that facilitates magnetic insertion into the mounting hole 411.

[0034] In this embodiment, the conical guide 31 guides the positioning bolt 3 accurately into the mounting hole 411 on the mounting bracket 41 of the pneumatic actuator 4, ensuring quick and precise alignment even when visibility is obstructed or operating space is limited. This design reduces the need for manual adjustment, thereby speeding up installation and reducing installation errors caused by human factors. Furthermore, the conical design helps distribute pressure during insertion, preventing damage that may be caused by direct impact and protecting the integrity of the mounting hole 411 and the structural stability of the positioning bolt 3 itself. Combined with the magnetic insertion mechanism, the conical guide 31 not only makes the connection more robust and reliable but also improves the efficiency and reliability of the entire assembly process.

[0035] For details, please refer to Figure 2 The feedback shaft 5 is connected to the splitter 7 of the pneumatic actuator 4 via the feedback bracket 6 (in existing technology, the upper end of the splitter is connected to the push rod of the pneumatic actuator, and the lower end is connected to the valve stem of the valve body), ensuring the effectiveness and accuracy of the feedback mechanism. Please refer to [link / reference]. Figure 7After the feedback shaft 5 is installed, remove the tooling used to assist in the installation of the positioner feedback component, and fix the positioner 9 to the mounting bracket 41 by the fixing bracket 8 (that is, fix it to the same position where the tooling used to assist in the installation of the positioner feedback component was removed, and fix the positioner 9 to the mounting bracket 41 by bolts), so that the feedback shaft 5 is inserted into the waist groove of the feedback rod 10 of the positioner 9.

[0036] It should be noted that the feedback center line of the positioner 9 coincides with the symmetrical center line of the two sets of second positioning holes 12, ensuring that the feedback rod 10 is horizontal when the pneumatic actuator 4 is at the 50% stroke position, thereby achieving linear adjustment of the valve opening. Please refer to [link / reference]. Figure 3 The angle α formed by the center of each pair of symmetrical second positioning holes 12 and the feedback center line of the positioner 9 is within the working swing angle range of the positioner 9, ensuring that the positioner 9 can work normally.

[0037] Next, the working principle of a tooling for assisting in the installation of a positioner feedback component, as described in the embodiments of this utility model, will be explained.

[0038] At the start of installation, the auxiliary bracket 1 is first placed on the mounting bracket 41 of the pneumatic actuator 4, and aligned with the threaded through hole 21 on the magnetic block 2 through the first positioning hole 11 at its bottom. Then, the screw portion of the positioning bolt 3 passes through the first positioning hole 11 and the threaded through hole 21 in sequence, and with the help of its tapered guide portion 31, it is accurately magnetically inserted into the mounting hole 411, ensuring that the auxiliary bracket 1 is firmly fixed on the pneumatic actuator 4.

[0039] Next, the two sets of symmetrically arranged second positioning holes 12 on the auxiliary bracket 1 are used to match different models or specifications of pneumatic actuators 4, thereby ensuring that the feedback shaft 5 can be correctly installed. The design of these two sets of positioning holes takes into account the needs of different strokes (e.g., the leftmost corresponds to a smaller stroke, and the rightmost corresponds to a larger stroke), allowing the feedback shaft 5 to be installed in the appropriate hole position according to the specific stroke of the pneumatic actuator. Normally, if it is necessary to adjust the position of the feedback shaft 5 to adapt to different stroke requirements, the position will be selected according to the valve's operating method. Figure 3 The second positioning hole 12 is used for installation (i.e., for air-to-close valves, the feedback shaft 5 should be inserted). Figure 3 The upper middle set of second positioning holes 12; air-operated valve, the feedback shaft 5 is inserted Figure 3 A set of second positioning holes 12 in the lower middle section.

[0040] After completing the above steps, the feedback shaft 5 is connected to the halfway 7 of the pneumatic actuator 4 via the feedback bracket 6, ensuring the effectiveness and accuracy of the feedback mechanism. Subsequently, the tooling used for auxiliary installation is removed, and the positioner 9 is fixed to the mounting bracket 41 using the fixing bracket 8, so that the feedback shaft 5 can be inserted into the groove of the feedback rod 10 of the positioner 9.

[0041] Finally, to ensure the positioner's performance, the feedback center line of positioner 9 must coincide with the symmetrical center lines of the two sets of second positioning holes 12. This ensures that when the pneumatic actuator is at 50% stroke, the feedback rod 10 remains horizontal, achieving linear adjustment of the valve opening. The angle α formed by the centers of every two symmetrical second positioning holes 12 and the feedback center line of positioner 9 should also be within the positioner's operating swing angle range, guaranteeing normal operation of the positioner.

[0042] In summary, by setting up an auxiliary bracket, a magnetic block, and a positioning bolt, the auxiliary bracket has a first positioning hole at its bottom, the magnetic block has a threaded through hole, and the screw of the positioning bolt passes through the first positioning hole and the threaded through hole in sequence before being magnetically inserted into the mounting hole of the mounting bracket of the pneumatic actuator. The auxiliary bracket has two sets of symmetrically arranged second positioning holes, the distance between which corresponds to the stroke of the pneumatic actuator, to assist in the installation of the positioner's feedback shaft. In this configuration, pneumatic actuators with multiple stroke specifications can be applied, enabling rapid positioning and installation of the positioner's feedback component with high installation consistency. When the pneumatic actuator is at 50% opening, the feedback rod can be kept horizontal, improving the linear adjustment performance of the positioner on the pneumatic actuator.

[0043] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tool for assisting in the installation of a positioner feedback element, the tool comprising: The utility model relates to a kind of auxiliary installation tool for the feedback of positioner, including: auxiliary support (1), magnetic block (2) and positioning bolt (3), the bottom of the auxiliary support (1) has first positioning hole (11), the magnetic block (2) has threaded through hole (21), the screw rod portion of the positioning bolt (3) is sequentially inserted into the installation hole (411) of the installation support (41) of pneumatic actuator (4) after first positioning hole (11) and threaded through hole (21) are passed through magnetically. Wherein, the auxiliary support (1) has two groups of second positioning holes (12) symmetrically arranged, the hole distance of two groups of second positioning holes (12) corresponds with the stroke of pneumatic actuator (4), to assist installation positioner (9) feedback shaft (5). The magnetic block (2) and the installation support (41) have gap.

2. The tool for aiding installation of a positioner feedback element of claim 1, wherein, The positioning bolt (3) has taper face guide portion (31) for facilitating magnetic insertion with the installation hole (411).

3. The tool for aiding installation of a positioner feedback member of claim 1, wherein, The feedback shaft (5) is connected with the half (7) of pneumatic actuator (4) through feedback support (6).

4. The tool for aiding installation of a positioner feedback member of claim 1, wherein, When the feedback shaft (5) is installed, the tool for assisting installation positioner feedback is removed, and the positioner (9) is fixed on the installation support (41) through fixed support (8), so that the feedback shaft (5) is inserted into the feedback rod (10) waist groove of the positioner (9).

5. The tool for aiding installation of a positioner feedback member of claim 1, wherein, The feedback center line of the positioner (9) coincides with the center line of symmetry of two groups of second positioning holes (12).

6. The tool for aiding installation of a positioner feedback member of claim 5, wherein, The included angle α formed by the center of each two symmetric second positioning holes (12) and the feedback center line of the positioner (9) is within the working swing angle range of the positioner (9).

7. The tool for aiding installation of a positioner feedback member of claim 6, wherein, ​

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