Device for programming output curve of valve body

Abstract

The utility model discloses equipment for programming an output curve of a valve body, which comprises a mounting frame, and a positioning and clamping mechanism for clamping and positioning the valve body is mounted on the mounting frame; an encoder and a positioning indexing shaft are further mounted on the mounting frame, a central shaft of the encoder is connected with the positioning indexing shaft, and the bottom of the positioning indexing shaft is connected with a valve plate shaft in the valve body; the valve further comprises a control and programming assembly, the output end of the encoder is connected with the input end of the control and programming assembly, and the controlled end of the valve body is connected with the output end of the control and programming assembly. According to the utility model, the encoder is connected with the valve plate shaft, the rotation angle of the valve plate is identified, a signal is converted into an electric signal to be output, and a valve body output curve is programmed in a multi-point programming mode, so that the output linearity of the valve body output curve is improved, and the nonlinear error in the programming process of the valve body output curve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body programming control, and particularly relates to a device for programming the output curve of a valve body. Background Art

[0002] A valve body output curve programming device generally refers to a dedicated device that can perform programming control on the output characteristics of a valve body. This device can achieve precise control of parameters such as the flow rate and pressure of the valve body, and can set and adjust the output curve of the valve body through programming to meet different process requirements and control requirements.

[0003] However, currently, the technology of programming the output curve of a valve body by an encoder usually adopts the conventional two-point or three-point programming method, which has a certain degree of output non-linearity problem and a certain non-linear error, resulting in certain defects in the control accuracy of the valve body. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a device for programming the output curve of a valve body, which can improve the output linearity of the valve body output curve and reduce the non-linear error in the process of programming the valve body output curve.

[0005] To solve the above technical problems, the following technical solutions are adopted by the utility model.

[0006] A device for programming the output curve of a valve body includes a mounting frame, on which a positioning and clamping mechanism for clamping and positioning the valve body is mounted; an encoder and a positioning indexing shaft are also mounted on the mounting frame, the central axis of the encoder is connected to the positioning indexing shaft, and the bottom of the positioning indexing shaft is connected to the valve piece shaft inside the valve body; it also includes a control and programming component, the output end of the encoder is connected to the input end of the control and programming component, and the controlled end of the valve body is connected to the output end of the control and programming component.

[0007] In the above device for programming the output curve of a valve body, the mounting frame includes a bottom plate and a positioning seat arranged on one side of the bottom plate, and the positioning seat is arranged vertically.

[0008] In the above device for programming the output curve of a valve body, the positioning and clamping mechanism includes a positioning block mounted in the middle of the positioning seat and a quick-clamping pad block mounted on the bottom plate. The quick-clamping pad block is arranged on the side of the bottom plate far from the positioning seat, and the quick-clamping pad block cooperates with the positioning block to clamp and position the valve body.

[0009] In the above device for programming the output curve of a valve body, a moving base is vertically slidably arranged on the positioning seat, an encoder fixing rod is mounted on the moving base, and an encoder fixing piece for supporting the encoder is mounted on the encoder fixing rod.

[0010] The above-mentioned device for programming the output curve of a valve body. An installation frame connected to a positioning indexing shaft is provided in the middle of the positioning seat, and a pressing head for fixing the positioning indexing shaft is provided on the installation frame.

[0011] The above-mentioned device for programming the output curve of a valve body. A V-shaped pin is provided at the bottom of the positioning indexing shaft, and a groove connected to the V-shaped pin is provided at the top center of the valve piece shaft at the center of the valve piece.

[0012] Due to the adoption of the above technical solutions, the technical progress achieved by the present utility model is as follows.

[0013] The present utility model provides a device for programming the output curve of a valve body. By connecting an encoder to the valve piece shaft, identifying the rotation angle of the valve piece and converting the signal into an electrical signal for output, and programming the output curve of the valve body in a multi-point programming manner, the output linearity of the valve body output curve is improved, and the non-linear error in the programming process of the valve body output curve is reduced. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the connection between the positioning indexing disc and the valve body of the present utility model.

[0016] Wherein: 1. Encoder, 2. Encoder fixing piece, 3. Encoder fixing rod, 4. Moving base, 5. Pressing head, 6. Positioning seat, 7. Quick clamp spacer block, 8. Positioning block, 9. Base plate, 10. Positioning indexing shaft, 11. Valve body, 12. Control and programming component, 13. Valve piece shaft, 14. V-shaped pin. Detailed Embodiment

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] A device for programming the output curve of a valve body, as Figures 1 to 2 shown, includes an installation frame. A positioning and clamping mechanism for clamping and positioning the valve body 11 is installed on the installation frame. An encoder 1 and a positioning indexing shaft 10 are also installed on the installation frame. The central shaft of the encoder 1 is connected to the positioning indexing shaft 10. The bottom of the positioning indexing shaft 10 is connected to the valve piece shaft 13 inside the valve body 11. It further includes a control and programming component 12. The output end of the encoder 1 is connected to the input end of the control and programming component 12, and the controlled end of the valve body 11 is connected to the output end of the control and programming component 12.

[0019] A V-shaped pin 14 is provided at the bottom of the positioning indexing shaft 10. A groove connected to the V-shaped pin 14 is provided at the center of the top of the valve plate shaft 13 at the center of the valve plate, facilitating the connection of the positioning indexing shaft 10 to the valve plate shaft inside the valve body 11.

[0020] The mounting bracket includes a bottom plate 9 and a positioning seat 6 provided on one side of the bottom plate 9. The positioning seat 6 is vertically arranged.

[0021] The positioning and clamping mechanism includes a positioning block 8 installed in the middle of the positioning seat 6 and a quick-clamping pad block 7 installed on the bottom plate 9. The quick-clamping pad block 7 is provided on the side of the bottom plate 9 away from the positioning seat 6, and the quick-clamping pad block 7 cooperates with the positioning block 8 to clamp and position the valve body 11.

[0022] A moving base 4 is vertically slidably arranged on the positioning seat 6, enabling the moving base 4 to move up and down along the positioning seat 6. An encoder fixing rod 3 is installed on the moving base 4, and an encoder fixing piece 2 for supporting the encoder 1 is installed on the encoder fixing rod 3.

[0023] An installation bracket connected to the positioning indexing shaft 10 is provided in the middle of the positioning seat 6, and a pressing head 5 for fixing the positioning indexing shaft is provided on the installation bracket.

[0024] The center of the positioning indexing shaft 10 is aligned with the center of the encoder 1. A scale is provided on the disc on the circumferential side of the upper part of the positioning indexing shaft 10 and is equally divided into 360 degrees.

[0025] During use, first, the valve body 11 to be programmed is installed on the positioning block 8 and clamped by the quick-clamping pad block 7. Then, the V-shaped pin 14 on the positioning indexing shaft 10 is stuck in the groove on the valve plate shaft 13. At the same time, the signal wire is connected to the control and programming component 12. Through technical operations, the control and programming component inputs signals to the valve body 11, causing the valve plate inside the valve body 11 to rotate. The encoder connected to the valve plate shaft 14 through the positioning indexing shaft 10 will identify the rotation angle of the valve plate and input the information back to the control and programming device, realizing automatic programming of the output curve of the valve body for the valve body.

[0026] Specifically, in this embodiment, the multi-point programming method is to control the valve to each specified programming point and perform programming for each position. The specific steps are as follows:

[0027] First step: Control the valve plate to the first programming point, set the basic programming parameters, and read the angle signal of the first point.

[0028] Second step: Control the valve plate to the second programming point and read the angle signal of the second point.

[0029] Third step: Repeat the second step until the angle signals of all programming points are read.

[0030] Step 4: Calculate the relevant slope and write the angle, output, and slope data of each programming point.

[0031] In other embodiments, multi-point programming can also be performed by reading the position and voltage information of the valve in real time to calculate the compensation value and performing one-time writing programming. The specific operation is as follows:

[0032] The first step is to pre-program the valve. There are two pre-programming methods. The first is to program according to a certain slope starting from 0 degrees; the second is to program the triangular voltage output according to a certain angle.

[0033] The second step is to control the valve to run and read the current voltage and encoder angle in real time, and calculate the deviation between the actual angle and the actual angle.

[0034] When using the first pre-programming method, if the programming curve is set to 0 degrees corresponding to 10%, 360 degrees corresponding to 90%, the programming points are 16 points and the 16-point angle interval is 22.5 degrees, if the current read voltage is 15%, the encoder angle is 22 degrees, it means that the magnetic steel angle and the physical angle differ by 0.5 degrees, so the output voltage of the magnetic angle of 22.5 degrees is: 10 + (22) * 80 / 360 = 14.89%.

[0035] When using the second pre-programming method, the programming curve is 0 degrees corresponding to 10%, 22.5 degrees corresponding to 90%, 45 degrees corresponding to 0%, and so on up to 360 degrees. If the current voltage read is 10% and the encoder angle is 1 degree, it means that the magnetic steel angle and the physical angle differ by 1 degree, so the voltage output at a magnetic angle of 0 degrees is: 10+(1)*80 / 360=10.22%.

[0036] If the currently read voltage is 90% and the encoder angle is 22 degrees, it means that the magnetic steel angle differs from the physical angle by 1 degree, so the output voltage at a magnetic angle of 22.5 degrees is: 10+(22)*80 / 360=14.89%.

[0037] Step 3: Repeat step 2 until all programming points output voltage and the encoder angle signal is read and calculated.

[0038] Step 4: Write the angle, output, and slope data of each programming point.

[0039] The utility model provides a device for programming a valve body output curve. An encoder is connected to a valve plate shaft to encode and output the valve plate output curve, and the valve body output curve is programmed by multi-point programming, thereby improving the output linearity of the valve body output curve and reducing the nonlinear error in the valve body output curve programming process.

Claims

1. A device for programming the output curve of a valve body, characterized in that: It includes a mounting bracket, on which a positioning and clamping mechanism for clamping and positioning the valve body (11) is installed; an encoder (1) and a positioning indexing shaft (10) are also installed on the mounting bracket. The central axis of the encoder (1) is connected to the positioning indexing shaft (10), and the bottom of the positioning indexing shaft (10) is connected to the valve disc shaft (13) inside the valve body (11); it further includes a control and programming component (12). The output end of the encoder (1) is connected to the input end of the control and programming component (12), and the controlled end of the valve body (11) is connected to the output end of the control and programming component (12).

2. The device for programming the output curve of a valve body according to claim 1, wherein: The mounting bracket includes a bottom plate (9) and a positioning seat (6) arranged on one side of the bottom plate (9), and the positioning seat (6) is arranged vertically.

3. A device for programming the output curve of a valve body according to claim 2, characterized in that: The positioning and clamping mechanism includes a positioning block (8) installed in the middle of the positioning seat (6) and a quick-clamping pad block (7) installed on the bottom plate (9). The quick-clamping pad block (7) is arranged on the side of the bottom plate (9) away from the positioning seat (6), and the quick-clamping pad block (7) cooperates with the positioning block (8) to clamp and position the valve body (11).

4. A device for programming the output curve of a valve body, according to claim 2, characterized in that: A moving base (4) is vertically slidably arranged on the positioning seat (6). An encoder fixing rod (3) is installed on the moving base (4), and an encoder fixing piece (2) for supporting the encoder (1) is installed on the encoder fixing rod (3).

5. An apparatus for programming the output curve of a valve body according to claim 2, characterized in that: An installation frame connected to the positioning indexing shaft (10) is arranged in the middle of the positioning seat (6), and a press head (5) for fixing the positioning indexing shaft is arranged on the installation frame.

6. An apparatus for programming the output curve of a valve body, as claimed in claim 1, wherein: A V-shaped pin (14) is arranged at the bottom of the positioning indexing shaft (10), and a groove connected to the V-shaped pin (14) is opened at the top center of the valve disc shaft (13) at the center of the valve disc.

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