Novel fixing device for displacement sensor of high-pressure regulating valve
Through the design of structures such as integrated blocks and fixing frames, the connection unstable problem of high-pressure regulating valve LVDT is solved, which achieves higher stability and accuracy, extends the life of the parts, and is suitable for fixing the high-pressure regulating valve displacement sensor in harsh environments.
Patent Information
- Application Number
- CN202422521188.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The connection method of the existing high-pressure regulating valve LVDT is prone to cause crossbar breakage, feedback rod breakage, coil sleeve wear and loosening, and it is impossible to maintain stability and accuracy in harsh environments.
The integrated block, upper and lower end covers of the oil cylinder, fixing plate and fixing frame are adopted to achieve stable fixation of the oil engine cylinder by fastening screw connection, and the LVDT feedback main rod is connected coaxially with the piston rod to improve stability and accuracy.
It improves the fixing stability and measurement accuracy of the regulating valve displacement sensor, extends the life of the LVDT feedback rod, avoids component losses, and enhances the reliability of use in harsh environments.
Smart Images
Figure CN223165151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of regulating valve sensors, and particularly relates to a fixing device for a displacement sensor of a new type of high-pressure regulating valve. Background Technique
[0002] The LVDT sensor, that is, the linear variable differential transformer, is a displacement measurement sensor with high precision and high stability. It consists of a fixed toroidal core and a moving core shaft containing three coils inside. When an external force acts on the moving core shaft, the positions of the internal coils change, thereby changing the magnetic coupling relationship between these three coils, resulting in a change in the output voltage signal of the LVDT sensor. By processing this output signal, the position information of the moving core shaft can be accurately measured. The LVDT sensor has characteristics such as infinite resolution and high electrical zero-point repeatability. Therefore, it is widely used in industrial automation, robotics, aerospace, automotive electronics and other fields to measure physical quantities such as the displacement, vibration, and expansion of objects. Its rugged structure and high reliability enable it to adapt to a variety of harsh environments and provide strong support for various precision measurement tasks.
[0003] The existing connection method of the LVDT of the high-pressure regulating valve is a cantilever structure. Its feedback rod is connected to a cross bar extending from the middle of the valve stem of the high-pressure regulating valve and the piston rod of the oil motor. The high-pressure regulating valve needs to act frequently due to participating in load regulation and primary frequency modulation regulation. At the same time, the change of the steam flow causes the valve stem of the high-pressure regulating valve to vibrate violently. The vibration will be amplified by the cross bar, and the longer the cross bar, the greater the vibration, resulting in frequent breakage of the cross bar, breakage of the feedback rod, wear and loosening of the coil sleeve during operation.
[0004] Therefore, it is necessary to design and transform the connection method of the regulating valve displacement sensor to effectively change the existing connection method of the LVDT of the high-pressure regulating valve and effectively prevent the phenomena of frequent breakage of the cross bar, breakage of the feedback rod, wear and loosening of the coil sleeve during operation. Summary of the Utility Model
[0005] The utility model provides a fixing device for a displacement sensor of a new type of high-pressure regulating valve, which solves the problems raised in the above background technique.
[0006] To solve the above technical problems, the technical solution of the utility model is as follows:
[0007] An embodiment of the utility model provides a fixing device for a displacement sensor of a new type of high-pressure regulating valve, including:
[0008] An integrated block, wherein the top of the front of the integrated block is fixedly connected to the upper end cover of the oil cylinder, the bottom of the front of the integrated block is fixedly connected to the lower end cover of the oil cylinder, an oil motor cylinder is provided on the inner side of the upper end cover of the oil cylinder, a piston rod is installed inside the oil motor cylinder, a fixing plate is fixedly installed on the top of the upper end cover of the oil cylinder, and the top of the fixing plate is fixedly connected to a fixing frame.
[0009] Through the above technical solution, the upper end cover and the lower end cover of the cylinder are fixed by the integrated block, so that the oil cylinder of the oil motor is fixed, the stability of the operation of the oil cylinder of the oil motor is improved, and it is convenient for users to use.
[0010] Furthermore, a reinforcing rib is fixedly connected to the front of the fixing frame, and the bottom of the reinforcing rib is fixedly connected to the top of the fixing plate.
[0011] With the above technical solution, the fixing frame is easily fixed by providing the reinforcing ribs, thereby improving the stability of the fixing frame support and facilitating use by users.
[0012] Furthermore, the front and back sides of the fixing frame are fixedly connected with pipe clamps, and the interior of the pipe clamps is fixedly connected with an LVDT coil.
[0013] Through the above technical solution, the pipe clamp is convenient for fixing the LVDT coil, thereby making the use efficiency of the LVDT coil higher.
[0014] Furthermore, the interior of the LVDT coil on the front side of the fixing frame is slidably connected to an LVDT feedback main rod.
[0015] With the above technical solution, the expansion and contraction of the piston rod is measured by the LVDT feedback main rod, which is convenient for users.
[0016] Furthermore, an LVDT feedback sub-rod is slidably connected to the interior of the LVDT coil on the back of the fixing frame.
[0017] Through the above technical solution, the expansion and contraction of the piston rod is assisted measured by the LVDT feedback auxiliary rod, thereby improving the stability of the measurement and increasing the efficiency.
[0018] Furthermore, the LVDT feedback main rod is coaxially connected to the center of the piston rod end face.
[0019] Through the above technical solution, by arranging the LVDT feedback main rod and the piston rod to be coaxially connected, the stability of the piston rod extension and contraction measurement is effectively improved.
[0020] Furthermore, the number of the pipe clamps on the front and back sides of the fixing frame are both two, and the pipe clamps are used in conjunction with the LVDT coil.
[0021] Through the above technical solution, by setting the number of pipe clamps on the front and back of the fixing bracket to two each, the stability of the LVDT coil fixing is effectively improved, which is convenient for users to use.
[0022] Further, the upper end cover of the oil cylinder and the lower end cover of the oil cylinder are fixedly connected through fastening screws, and the number of the fastening screws is four.
[0023] Through the above technical solution, the connection between the upper end cover of the oil cylinder and the lower end cover of the oil cylinder is made more stable by the fastening screws, so that the operation stability of the oil motor oil cylinder is higher, which is convenient for users to use.
[0024] The above solution of the present utility model has at least the following beneficial effects:
[0025] 1. By setting parts such as the upper end cover of the oil cylinder and the lower end cover of the oil cylinder, the fixing stability of the regulating valve displacement sensor is higher, and at the same time, the measurement accuracy is improved, the service life of the LVDT feedback rod is extended, which is convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic structural diagram of the upper end cover of the oil cylinder of the present utility model.
[0027] Description of the reference numerals:
[0028] 1. Integrated block; 2. Upper end cover of the oil cylinder; 3. Lower end cover of the oil cylinder; 4. Oil motor oil cylinder; 5. Piston rod; 6. Fixing bracket; 7. Reinforcing rib; 8. Pipe clamp; 9. LVDT coil; 10. Main LVDT feedback rod; 11. Auxiliary LVDT feedback rod; 12. Fastening screw; 13. Fixing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] Hereinafter, the exemplary embodiments of the present utility model will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be completely conveyed to those skilled in the art.
[0030] As Figure 1 shown, the present utility model provides a fixing device for a new type of high-pressure regulating valve displacement sensor, including:
[0031] Integrated block 1, the upper end cover 2 of the oil cylinder is fixedly connected to the top of the front surface of the integrated block 1, the lower end cover 3 of the oil cylinder is fixedly connected to the bottom of the front surface of the integrated block 1, an oil motor oil cylinder 4 is arranged inside the upper end cover 2 of the oil cylinder, a piston rod 5 is installed inside the oil motor oil cylinder 4, a fixed frame plate 13 is fixedly installed on the top of the upper end cover 2 of the oil cylinder, a fixed frame 6 is fixedly connected to the top of the fixed plate 13, a reinforcing rib 7 is fixedly connected to the front surface of the fixed frame 6, the bottom of the reinforcing rib 7 is fixedly connected to the top of the fixed plate 13, and the fixed plate 13, the fixed frame 6 and the reinforcing rib 7 are combined into a support frame.
[0032] As Figure 1 shown, pipe clamps 8 are fixedly connected to both the front and back surfaces of the fixed frame 6, an LVDT coil 9 is fixedly connected inside the pipe clamp 8, an LVDT feedback main rod 10 is slidably connected inside the LVDT coil 9 on the front surface of the fixed frame 6, an LVDT feedback sub-rod 11 is slidably connected inside the LVDT coil 9 on the back surface of the fixed frame 6, the LVDT feedback main rod 10 is coaxially connected to the center of the end face of the piston rod 5, the number of pipe clamps 8 on both the front and back surfaces of the fixed frame 6 is two, the pipe clamp 8 and the LVDT coil 9 are used in cooperation, and the upper end cover 2 of the oil cylinder and the lower end cover 3 of the oil cylinder are fixedly connected by fastening screws 12, and the number of fastening screws 12 is four.
[0033] In the embodiment of the present utility model (working principle), during use, the user directly connects the LVDT feedback main rod 10 to the piston rod 5, thereby avoiding the problem of transmission loss caused by excessive connecting parts, improving the transmission efficiency, and at the same time, the coaxial connection improves the strength of the LVDT feedback main rod 10 and the LVDT feedback sub-rod 11, so that the measurement accuracy of the LVDT sensor is higher and it is convenient for the user to use.
[0034] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.
Claims
1. A fixing device for a displacement sensor of a new type of high-pressure regulating valve, characterized in that, Including: An integrated block (1), on the top of the front surface of the integrated block (1), an upper end cover (2) of an oil cylinder is fixedly connected, on the bottom of the front surface of the integrated block (1), a lower end cover (3) of an oil cylinder is fixedly connected, inside the upper end cover (2) of the oil cylinder, a servomotor oil cylinder (4) is arranged, inside the servomotor oil cylinder (4), a piston rod (5) is installed, on the top of the upper end cover (2) of the oil cylinder, a fixing plate (13) is fixedly installed, and on the top of the fixing plate (13), a fixing frame (6) is fixedly connected.
2. The fixing device of a displacement sensor of a novel high-pressure regulating valve according to claim 1, characterized in that, On the front surface of the fixing frame (6), a reinforcing rib (7) is fixedly connected, and the bottom of the reinforcing rib (7) is fixedly connected to the top of the fixing plate (13).
3. The fixing device of a novel high-pressure regulating valve displacement sensor according to claim 1, characterized in that, On both the front and back surfaces of the fixing frame (6), pipe clamps (8) are fixedly connected, and inside the pipe clamps (8), an LVDT coil (9) is fixedly connected.
4. The fixing device of a novel high-pressure regulating valve displacement sensor according to claim 1, characterized in that, Inside the LVDT coil (9) on the front surface of the fixing frame (6), an LVDT feedback main rod (10) is slidably connected.
5. The fixing device of a displacement sensor of a novel high-pressure regulating valve according to claim 1, characterized in that, Inside the LVDT coil (9) on the back surface of the fixing frame (6), an LVDT feedback sub-rod (11) is slidably connected.
6. The fixing device of a displacement sensor of a novel high-pressure regulating valve according to claim 4, characterized in that, The LVDT feedback main rod (10) is coaxially connected to the center of the end face of the piston rod (5).
7. The fixing device of a displacement sensor of a novel high-pressure regulating valve according to claim 1, characterized in that, The number of pipe clamps (8) on both the front and back surfaces of the fixing frame (6) is two, and the pipe clamps (8) are used in cooperation with the LVDT coil (9).
8. The fixing device of a displacement sensor of a novel high-pressure regulating valve according to claim 1, characterized in that, Between the upper end cover (2) of the oil cylinder and the lower end cover (3) of the oil cylinder, they are fixedly connected by fastening screws (12), and the number of the fastening screws (12) is four.