An electrical valve positioner finished product qualification testing device

Abstract

The utility model provides a kind of electrical valve positioner finished product qualified detection device, belong to valve positioner detection technical field, including support, further include: simulation component, set in the inside of the support, the inner wall of the support is fixedly installed with the scale indicating scale of cooperation with the simulation component, the front of the simulation component is fixedly connected with connecting piece, and the connecting piece is used to connect the feedback rod of valve positioner;Fixed plate is installed in the front of the support by bolt.The utility model in this way sets up driving mechanism and quick fixing component, driving mechanism can drive quick fixing component to expand when using, to be fixed in the screw hole on the back of valve positioner by the quick fixing component of expansion, to fix valve positioner, to effectively improve the installation and disassembly speed of valve positioner, improve the detection efficiency of valve positioner.

Description

Technical Field

[0001] This utility model relates to the field of valve positioner testing technology, and more specifically, to a finished product qualification testing device for electric valve positioners. Background Technology

[0002] A valve positioner is the terminal actuator of a control system. Installed on a pneumatic control valve, it receives a 4-20mA control signal from the controller and precisely drives the valve stem to a designated position. It can overcome interference such as valve stem friction and medium pressure fluctuations, ensuring that the valve opening is strictly synchronized with the control signal, thereby achieving precise and reliable flow regulation. It is widely used in industries such as petroleum and chemical industries that require precise process control.

[0003] Currently, after the valve positioner is manufactured, it needs to be installed on the pneumatic control valve with bolts. Then, the feedback rod and valve stem of the valve positioner are connected and tested. After the test is completed, the bolts need to be unscrewed to remove the valve positioner. The disassembly and assembly process is cumbersome, which leads to low testing efficiency. In addition, a pneumatic control valve needs to be purchased as an installation and testing platform, which increases the testing cost.

[0004] Therefore, there is an urgent need for a finished product qualification testing device for electric valve positioners to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a finished product qualification testing device for electric valve positioners to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: An electric valve positioner finished product qualification inspection device includes a bracket and further includes: A simulation component is disposed inside the bracket. A scale indicator is fixedly installed on the inner wall of the bracket to cooperate with the simulation component. A connector is fixedly connected to the front of the simulation component. The connector is used to connect the feedback rod of the valve positioner. A fixing plate is bolted to the front of the bracket; A moving mechanism is fixedly installed on the back of the fixed plate, and an adjustment frame is installed on the moving end of the moving mechanism; A quick-fixing assembly is detachably mounted on the adjustment frame, and two quick-fixing assemblies are symmetrically arranged about the central axis of the adjustment frame; A drive mechanism, installed inside the adjustment frame, is used to drive the quick-fixing component to expand.

[0007] As a preferred technical solution of this application, the front of the bracket is provided with a screw hole that cooperates with the bolt, and the bottom of the screw hole is provided with a plurality of first mounting holes.

[0008] As a preferred technical solution of this application, the simulation component includes mounting cylinders fixedly installed at the top and bottom of the inner wall of the bracket, a valve stem simulation part slidably installed between the two mounting cylinders, a spring cooperating with the valve stem simulation part is also provided inside the mounting cylinder, and a pointer cooperating with the scale indicator is fixedly installed in the middle of the valve stem simulation part.

[0009] As a preferred technical solution of this application, the fixing plate has a second mounting hole that cooperates with the bolt at one end, and a through groove is provided on one side of the second mounting hole.

[0010] As a preferred technical solution of this application, the adjustment frame includes a frame disposed inside the through groove, and two first sliding grooves are symmetrically opened on the top of the frame, which respectively cooperate with the two quick fixing components.

[0011] As a preferred technical solution of this application, the driving mechanism includes an electric telescopic rod fixedly connected to the inner wall of the frame. The electric telescopic rod is located between two first sliding grooves. The moving end of the electric telescopic rod is fixedly connected to a connecting plate slidably installed on the inner side of the frame. A second sliding groove corresponding to the position of the first sliding groove is opened through the connecting plate.

[0012] As a preferred technical solution of this application, the quick-fixing assembly includes a connecting rod slidably installed inside the first groove. One end of the connecting rod is fixedly installed with a limiting piece located on one side of the connecting plate. The outer wall of the connecting rod is threadedly connected with a fixing nut located on the other side of the connecting plate. A limiting ring that is slidably connected to the frame is provided on the outer side of the connecting rod. A plurality of elastic pieces that are arranged around the outer side of the connecting rod are fixedly installed on the limiting ring. Anti-slip pads are fixedly installed on the outer wall of the elastic pieces. A frustum-shaped extrusion head is fixedly installed on the other end of the connecting rod.

[0013] As a preferred technical solution of this application, the moving mechanism includes a fixed frame fixedly installed on the back of the fixed plate, an adjusting screw rotatably installed on the inner side of the fixed frame, guide rods fixedly connected to the inner wall of the fixed frame on both sides of the adjusting screw, a knob located on the outer side of the fixed frame fixedly connected to one end of the adjusting screw, a first connecting block fixedly connected to the bottom of the frame threadedly connected to the outer side of the adjusting screw, and a second connecting block fixedly connected to the side wall of the frame slidably installed on the outer side of the guide rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By setting up a drive mechanism and a quick-fixing component, the drive mechanism can drive the quick-fixing component to expand during use, thereby fixing the valve positioner by locking the expanded quick-fixing component in the screw hole on the back of the valve positioner. This effectively improves the installation and disassembly speed of the valve positioner, increases the detection efficiency of the valve positioner, and solves the problem that the disassembly and assembly process in the existing technology is relatively cumbersome, which leads to low detection efficiency. 2. By setting up a moving mechanism and an adjusting frame, the two quick-fixing components can be adjusted in position on the adjusting frame during use, which facilitates the installation of valve positioners with different mounting hole positions. At the same time, the moving mechanism can drive the fixed valve positioner to move, which can be adapted to different mounting hole distances and different models of positioners for testing and use, effectively improving the versatility of the device. 3. By setting up a bracket, scale indicator, and simulation components, the pneumatic control valve can be simulated during use, eliminating the need to purchase the pneumatic control valve and effectively reducing testing costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the electrical valve positioner finished product qualification testing device provided in this application; Figure 2 A partial structural schematic diagram of the electrical valve positioner finished product qualification testing device provided in this application; Figure 3 A partial structural schematic diagram of the electrical valve positioner finished product qualification testing device provided in this application; Figure 4 A partial structural schematic diagram of the electrical valve positioner finished product qualification testing device provided in this application; Figure 5 A partial structural schematic diagram of the electrical valve positioner finished product qualification testing device provided in this application; Figure 6 A partial structural schematic diagram of the electrical valve positioner finished product qualification testing device provided in this application.

[0016] The image shows: 1. Bracket; 11. Screw hole; 12. First mounting hole; 2. Scale indicator; 3. Simulation component; 31. Valve stem simulation part; 32. Mounting cylinder; 33. Spring; 34. Pointer; 4. Connector; 5. Fixing plate; 51. Second mounting hole; 52. Through groove; 6. Adjusting frame; 61. Frame; 62. First slide groove; 7. Quick fixing component; 71. Connecting rod; 72. Extrusion head; 73. Limiting ring; 74. Limiting piece; 75. Fixing nut; 76. Elastic piece; 77. Anti-slip pad; 8. Moving mechanism; 81. Fixing frame; 82. Adjusting screw; 83. First connecting block; 84. Guide rod; 85. Knob; 86. Second connecting block; 9. Drive mechanism; 91. Electric telescopic rod; 92. Connecting plate; 93. Second slide groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0018] like Figures 1-6 As shown, the electric valve positioner finished product qualification testing device proposed in this embodiment includes a bracket 1, and further includes: a simulation component 3, disposed inside the bracket 1, with a scale indicator 2 fixedly installed on the inner wall of the bracket 1 to cooperate with the simulation component 3, and a connector 4 fixedly connected to the front of the simulation component 3 for connecting the feedback rod of the valve positioner; a fixing plate 5, installed on the front of the bracket 1 by bolts; a moving mechanism 8, fixedly installed on the back of the fixing plate 5, with an adjustment frame 6 installed at the moving end of the moving mechanism 8; a quick-fixing component 7, detachably installed on the adjustment frame 6, and two quick-fixing components 7 are symmetrically arranged about the central axis of the adjustment frame 6; and a drive mechanism 9, installed inside the adjustment frame 6, used to drive the quick-fixing components 7 to expand. By setting the drive mechanism 9 and the quick-fixing components 7, the drive mechanism can expand during use. The device 9 can drive the quick-fixing component 7 to expand, thereby fixing the valve positioner by locking it into the screw hole on the back of the valve positioner. This effectively improves the installation and disassembly speed of the valve positioner and enhances its testing efficiency. By setting the moving mechanism 8 and the adjusting frame 6, the two quick-fixing components 7 can be adjusted in position on the adjusting frame 6 during use, making it easy to adapt to the installation of valve positioners with different mounting hole positions. At the same time, the moving mechanism 8 can drive the fixed valve positioner to move, thus adapting to different mounting hole spacings and different models of positioners for testing, effectively improving the versatility of the device. By setting the bracket 1, the scale indicator 2, and the simulation component 3, the device can simulate pneumatic control valves during use, eliminating the need to purchase pneumatic control valves and effectively reducing testing costs.

[0019] like Figures 1-3 As shown, in a preferred embodiment, based on the above method, the front of the bracket 1 is further provided with a screw hole 11 that cooperates with the bolt, and a plurality of first mounting holes 12 are provided through the bottom of the screw hole 11. It should be noted that the screw hole 11 allows the fixing plate 5 to be easily fixed to the front of the bracket 1 with bolts, and the first mounting holes 12 allow the bracket 1 to be fixed to the tabletop with bolts during use.

[0020] like Figures 1-2 As shown, in a preferred embodiment, based on the above method, the simulation component 3 further includes mounting cylinders 32 fixedly installed on the top and bottom of the inner wall of the support 1. A valve stem simulation part 31 is slidably installed between the two mounting cylinders 32. A spring 33 cooperating with the valve stem simulation part 31 is also provided inside the mounting cylinder 32. A pointer 34 cooperating with the scale indicator 2 is fixedly installed in the middle of the valve stem simulation part 31. It should be noted that by setting the valve stem simulation part 31, the valve stem of the pneumatic regulating valve can be simulated. By setting the spring 33, the resistance when the valve stem simulation part 31 moves can be increased, thus more closely resembling the actual working condition. By setting the pointer 34 and the scale indicator 2, the amount of movement of the valve stem simulation part 31 can be observed.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, in a preferred embodiment, based on the above method, a second mounting hole 51 is further provided near one end of the fixing plate 5 to cooperate with the bolt, and a through groove 52 is provided on one side of the second mounting hole 51. It should be noted that the second mounting hole 51 allows the fixing plate 5 to be fixed to the bracket 1 with the bolt.

[0022] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the adjusting frame 6 further includes a frame 61 disposed inside the through groove 52, and two first sliding grooves 62 are symmetrically formed on the top of the frame 61, which respectively cooperate with the two quick-fixing components 7. It should be noted that the first sliding grooves 62 facilitate the sliding adjustment of the quick-fixing components 7.

[0023] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, in a preferred embodiment, based on the above method, the drive mechanism 9 further includes an electric telescopic rod 91 fixedly connected to the inner wall of the frame 61. The electric telescopic rod 91 is located between two first sliding grooves 62. The moving end of the electric telescopic rod 91 is fixedly connected to a connecting plate 92 slidably installed on the inner side of the frame 61. A second sliding groove 93 corresponding to the position of the first sliding groove 62 is provided through the connecting plate 92. It should be noted that the second sliding groove 93 can cooperate with the first sliding groove 62 to avoid affecting the movement of the quick-fixing component 7. The electric telescopic rod 91 can drive the connecting plate 92 to move, thereby driving the connecting rod 71 to move through the connecting plate 92.

[0024] like Figures 1-6 As shown, in a preferred embodiment, based on the above method, the quick-fixing assembly 7 further includes a connecting rod 71 slidably installed inside the first slide groove 62. A limiting piece 74 located on one side of the connecting plate 92 is fixedly installed at one end of the connecting rod 71. A fixing nut 75 located on the other side of the connecting plate 92 is threadedly connected to the outer wall of the connecting rod 71. A limiting ring 73 slidably connected to the frame 61 is provided on the outer side of the connecting rod 71. Multiple elastic pieces 76 surrounding the outer side of the connecting rod 71 are fixedly installed on the limiting ring 73. Anti-slip pads 77 are fixedly installed on the outer walls of the elastic pieces 76. A frustum-shaped extrusion head 72 is fixedly installed at the other end of the connecting rod 71. It should be noted that the anti-slip pads 77 improve the friction between the elastic pieces 76 and the inner wall of the valve positioner mounting screw hole, ensuring the stability of the valve positioner installation. The fixing nut 75 and the limiting piece 74 can clamp or loosen the connecting plate 92, thereby adjusting the position of the connecting rod 71.

[0025] like Figures 1-5 As shown, in a preferred embodiment, based on the above method, the moving mechanism 8 further includes a fixed frame 81 fixedly mounted on the back of the fixed plate 5. An adjusting screw 82 is rotatably mounted on the inner side of the fixed frame 81. Guide rods 84, fixedly connected to the inner wall of the fixed frame 81, are provided on both sides of the adjusting screw 82. A knob 85 located on the outer side of the fixed frame 81 is fixedly connected to one end of the adjusting screw 82. A first connecting block 83, fixedly connected to the bottom of the frame 61, is threadedly connected to the outer side of the adjusting screw 82. A second connecting block 86, fixedly connected to the side wall of the frame 61, is slidably mounted on the outer side of the guide rods 84. It should be noted that during use, the adjusting screw 82 can be rotated by the knob 85, thereby driving the frame 61 to move inside the through groove 52 via the first connecting block 83. The guide rods 84 and the second connecting block 86 guide the moving frame 61.

[0026] Specifically, when using this electric valve positioner finished product qualification testing device: Loosen the fixing nut 75, and adjust the position of the two quick-fixing components 7 according to the mounting screw holes on the back of the valve positioner. After adjustment, tighten the fixing nut 75 to clamp the connecting plate 92 with the limiting piece 74 to fix the position of the connecting rod 71. Then, install the fixing plate 5 on the front of the bracket 1 with bolts. Next, place the valve positioner on the outside of the two quick-fixing components 7 through the screw holes on its back. At this time, activate the electric telescopic rod 91 to drive the connecting plate 92 to slide inside the frame 61, thereby pulling the connecting rod 71 through the frame 61. This causes the extrusion head 72 to enter the inner side of multiple elastic pieces 76. When the frustum-shaped extrusion head 72 enters the inner side of the multiple elastic pieces 76, it will extrude them, causing the multiple elastic pieces 76 to expand within the screw holes on the back of the valve positioner. This, in conjunction with the anti-slip pad 77, stabilizes the valve positioner. After fixing, connect the feedback rod of the valve positioner to the connector 4. After installation, connect the valve positioner to the current signal generator and simultaneously connect the air source to the valve positioner. Input 4mA (fully closed), 12mA (50% opening), and 20mA (fully open) signals to the valve positioner in sequence through the current signal generator. Observe the reading of the pointer 34 on the valve stem simulation part 31 on the scale indicator 2, record the actual displacement, and calculate the deviation from the theoretical value to verify whether the accuracy of the valve positioner is qualified. At the same time, it is also necessary to observe whether the full movement of the valve stem simulation part 31 is smooth. After the test is completed, the connecting plate 92 is reset by the electric telescopic rod 91. The moving connecting rod 71 will drive the extrusion head 72 to disengage from the inside of multiple elastic plates 76. The elastic plates 76 will reset the anti-slip pad 77 through their own elasticity. At this time, the valve positioner can be removed.

Claims

1. A finished product qualification testing device for electric valve positioners, comprising a bracket (1), characterized in that, Also includes: The simulation component (3) is located inside the bracket (1). The inner wall of the bracket (1) is fixedly installed with a scale indicator (2) that cooperates with the simulation component (3). The front of the simulation component (3) is fixedly connected with a connector (4). The connector (4) is used to connect the feedback rod of the valve positioner. The fixing plate (5) is bolted to the front of the bracket (1); The moving mechanism (8) is fixedly installed on the back of the fixed plate (5), and the moving end of the moving mechanism (8) is equipped with an adjustment frame (6). A quick-fixing component (7) is detachably mounted on the adjustment frame (6), and two quick-fixing components (7) are symmetrically arranged about the central axis of the adjustment frame (6); The drive mechanism (9) is installed inside the adjustment frame (6) and is used to drive the quick-fixing component (7) to expand.

2. The finished product qualification testing device for an electric valve positioner according to claim 1, characterized in that, The front of the bracket (1) is provided with a screw hole (11) that cooperates with the bolt, and a plurality of first mounting holes (12) are provided through the bottom of the screw hole (11).

3. The finished product qualification testing device for an electric valve positioner according to claim 1, characterized in that, The simulation component (3) includes mounting cylinders (32) fixedly installed on the top of the inner wall of the bracket (1) and the bottom of the inner wall of the bracket (1). A valve stem simulation part (31) is slidably installed between the two mounting cylinders (32). A spring (33) cooperating with the valve stem simulation part (31) is also provided inside the mounting cylinder (32). A pointer (34) cooperating with the scale indicator (2) is fixedly installed in the middle of the valve stem simulation part (31).

4. The finished product qualification testing device for an electric valve positioner according to claim 1, characterized in that, The fixing plate (5) has a second mounting hole (51) that cooperates with the bolt at one end. A through groove (52) is provided on one side of the second mounting hole (51).

5. The finished product qualification testing device for an electric valve positioner according to claim 4, characterized in that, The adjustment frame (6) includes a frame (61) disposed inside the through groove (52), and the top of the frame (61) has two first grooves (62) that respectively cooperate with the two quick fixing components (7).

6. The finished product qualification testing device for an electric valve positioner according to claim 5, characterized in that, The drive mechanism (9) includes an electric telescopic rod (91) fixedly connected to the inner wall of the frame (61). The electric telescopic rod (91) is located between two first slide grooves (62). The moving end of the electric telescopic rod (91) is fixedly connected to a connecting plate (92) slidably installed on the inner side of the frame (61). A second slide groove (93) corresponding to the position of the first slide groove (62) is opened through the connecting plate (92).

7. The finished product qualification testing device for an electric valve positioner according to claim 6, characterized in that, The quick-fixing assembly (7) includes a connecting rod (71) slidably installed inside the first slide groove (62). One end of the connecting rod (71) is fixedly installed with a limiting piece (74) located on one side of the connecting plate (92). The outer wall of the connecting rod (71) is threadedly connected with a fixing nut (75) located on the other side of the connecting plate (92). A limiting ring (73) that is slidably connected to the frame (61) is provided on the outer side of the connecting rod (71). A plurality of elastic pieces (76) that are arranged around the outer side of the connecting rod (71) are fixedly installed on the limiting ring (73). Anti-slip pads (77) are fixedly installed on the outer wall of the elastic pieces (76). A frustum-shaped extrusion head (72) is fixedly installed on the other end of the connecting rod (71).

8. The finished product qualification testing device for an electric valve positioner according to claim 5, characterized in that, The moving mechanism (8) includes a fixed frame (81) fixedly installed on the back of the fixed plate (5). An adjusting screw (82) is rotatably installed on the inner side of the fixed frame (81). Guide rods (84) are fixedly connected to the inner wall of the fixed frame (81) on both sides of the adjusting screw (82). A knob (85) located on the outer side of the fixed frame (81) is fixedly connected to one end of the adjusting screw (82). A first connecting block (83) fixedly connected to the bottom of the frame (61) is threadedly connected to the outer side of the adjusting screw (82). A second connecting block (86) fixedly connected to the side wall of the frame (61) is slidably installed on the outer side of the guide rod (84).

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