Servomotor stroke adjustment simulation device

Abstract

A servomotor stroke adjustment simulation device relates to the technical field of hydroelectric equipment simulation test and comprises a base and an adjustment practice mechanism, an adjustment part, a hydraulic piston cylinder, a sliding sheet and elastic rubber are mounted on the base, one end of the adjustment part is fixedly connected with the base, and the other end of the adjustment part is fixedly connected with the telescopic end of the hydraulic piston cylinder; the head end of a cylinder body of the hydraulic piston cylinder is fixedly connected with the sliding piece, and elastic rubber is arranged between the tail end of the cylinder body of the hydraulic piston cylinder and the base. A cylinder body of the hydraulic piston cylinder is correspondingly communicated with the adjusting exercise mechanism through an oil delivery hose; the adjusting exercise mechanism comprises an oil pressing device, a pressure gauge and an oil tank, the oil outlet end of the oil pressing device is connected with the oil conveying hose through the pressure gauge and a valve, and the oil inlet end of the oil pressing device is connected with the oil tank; the problem that maintenance personnel are inconvenient to train is solved.

Description

Technical Field

[0001] The utility model relates to the field of hydropower equipment simulation testing technology, specifically to a relay stroke adjustment simulation device. Background Technology

[0002] When the turbine guide vanes are fully closed, the pressure difference between the two sides causes mechanical deformation of the guide vanes and transmission components, resulting in an increase in the clearance between the guide vane surfaces and thus an increase in water leakage. Generally, based on the "tightening stroke" function of the relay, after the guide vanes are closed, the relay continues to apply a stroke of pressure to make the guide vanes overtight, usually 2-5mm, in order to reduce water leakage.

[0003] However, due to the large size and complex operation of water turbines, there are few opportunities to adjust the guide vanes after the relay is installed on the water turbine, which cannot meet the daily training needs of maintenance personnel. At present, relay stroke simulation devices are used to conduct formation adjustment simulation tests. However, the current simulation devices are scaled down proportionally, which cannot truly reproduce the dynamic response characteristics of the hydraulic system, making it difficult for trainees to master the precise adjustment method of the clamping stroke. Direct operation on the water turbine equipment poses a risk of high-pressure oil leakage and is also costly.

[0004] Therefore, we propose a simulation device that can accurately simulate the dynamic response characteristics of a hydraulic system. Utility Model Content

[0005] The purpose of this utility model is to provide a relay stroke adjustment simulation device to solve the problem of inconvenient training for maintenance personnel.

[0006] This utility model is achieved through the following technical solution:

[0007] A relay stroke adjustment simulation device includes a base and an adjustment exercise mechanism. An adjustment part, a hydraulic piston cylinder, a sliding plate and an elastic rubber are installed on the base. One end of the adjustment part is fixedly connected to the base, and the other end of the adjustment part is fixedly connected to the telescopic end of the hydraulic piston cylinder.

[0008] The cylinder head of the hydraulic piston cylinder is fixedly connected to the sliding plate, and an elastic rubber is provided between the cylinder tail and the base; the cylinder body of the hydraulic piston cylinder is connected to the adjustment and training mechanism through an oil delivery hose.

[0009] The adjustment and training mechanism includes an oil press, a pressure gauge, and an oil tank. The oil outlet of the oil press is connected to the oil delivery hose through the pressure gauge and a valve, and the oil inlet of the oil press is connected to the oil tank.

[0010] Furthermore, the base has an installation groove, and the adjustment part, hydraulic piston cylinder, sliding plate and elastic rubber are all arranged in the installation groove. The head end face of the installation groove is fixedly connected to the adjustment part, and the tail end face of the installation groove is in corresponding contact with the elastic rubber.

[0011] Furthermore, the base is also provided with guide rails, with two rails located on both sides of the adjustment part and the hydraulic piston cylinder, and the sliding plate is slidably mounted on the guide rails.

[0012] Furthermore, the adjustment part includes a fixing nut, an adjusting screw, a supplementary screw, and a connecting nut. The fixing nut is fixedly disposed on the head end face of the mounting groove. The fixing nut is threadedly connected to one end of the adjusting screw. The other end of the adjusting screw is threadedly connected to one end of the supplementary screw through a connecting flange. The other end of the supplementary screw is threadedly connected to the connecting nut, and the connecting nut is threadedly connected to the telescopic end of the hydraulic piston cylinder.

[0013] Furthermore, the thickness of the elastic rubber is 140-160 mm.

[0014] Furthermore, a pressure sensor is installed inside the elastic rubber, and a distance sensor is provided on the connecting nut for measuring the distance between the nut and the sliding plate; both the pressure sensor and the distance sensor are electrically connected to the host computer, which is installed on the side of the oil tank.

[0015] Furthermore, the host computer includes a data processor and a display, wherein the data processor is used to receive data from the pressure sensor and the distance sensor, and the output pin of the data processor is electrically connected to the display.

[0016] Furthermore, the data processor is a Siemens SIMAT IC S7-1200.

[0017] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0018] This utility model discloses a relay stroke adjustment simulation device, which uses a hydraulic piston cylinder and an adjustment part to simulate the relay. By converting the mechanical deformation of components such as guide vanes into the deformation of elastic rubber, the working environment of the relay adjusting the guide vane stroke is simulated, ensuring the accuracy of subsequent simulation test results. In addition, considering that the elongation of the piston rod varies under different pressures, a supplementary screw is set to ensure that the pressing stroke can be measured under different elongation, further improving the accuracy of the simulation test results.

[0019] By adjusting the training mechanism, the stroke of the hydraulic piston cylinder can be adjusted, which is the process of adjusting the clamping stroke of the simulating relay. The pressure gauge allows the staff to determine whether the simulation test is completed, thus improving the accuracy of the experimental results of this device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the host computer structure of this utility model.

[0022] Reference numerals: 1. Base; 2. Adjustment mechanism; 21. Oil press; 22. Pressure gauge; 23. Valve; 24. Oil tank; 3. Adjustment part; 31. Fixing nut; 32. Adjusting screw; 33. Supplementary screw; 34. Connecting nut; 4. Hydraulic piston cylinder; 5. Sliding plate; 6. Elastic rubber; 7. Oil hose; 8. Guide rail; 9. Pressure sensor; 10. Distance sensor; 11. Data processor; 12. Display. Detailed Implementation

[0023] 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 embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Example 1

[0025] like Figures 1-2 The relay stroke adjustment simulation device shown includes a base 1 and an adjustment training mechanism 2. An adjustment part 3, a hydraulic piston cylinder 4, a sliding plate 5, and an elastic rubber 6 are mounted on the base 1. One end of the adjustment part 3 is fixedly connected to the base 1, and the other end is fixedly connected to the telescopic end of the hydraulic piston cylinder 4. The adjustment part 3 and the hydraulic piston cylinder 4 are on the same axis and are both arranged along the length of the base 1. Furthermore, due to wear or assembly clearances in the hydraulic piston cylinder 4 and transmission components during long-term use, the actual piston stroke deviates from the theoretical value. Therefore, the adjustment part 3 can correct the mechanical clearances and ensure the accuracy of the piston stroke.

[0026] The head end of the hydraulic piston cylinder 4 is fixedly connected to the sliding plate 5, and an elastic rubber 6 is provided between the tail end of the hydraulic piston cylinder 4 and the base 1. The deformation of the elastic rubber 6 during the action of the hydraulic piston cylinder 4 can be used to simulate the mechanical deformation of components such as guide vanes of an actual water turbine during the pressing and adjusting stroke. After the hydraulic piston cylinder 4 extends and retracts, the distance between the sliding plate 5 and the adjusting part 3 changes accordingly, and this distance can reflect the thickness deformation of the elastic rubber 6. The cylinder body of the hydraulic piston cylinder 4 is connected to the adjusting exercise mechanism 2 through the oil hose 7.

[0027] The adjustment and training mechanism 2 includes a hydraulic press 21, a pressure gauge 22, and an oil tank 24. The oil outlet of the hydraulic press 21 is connected to the oil delivery hose 7 via the pressure gauge 22 and the valve 23, while the oil inlet of the hydraulic press 21 is connected to the oil tank 24. The adjustment and training mechanism 2 controls the extension and retraction of the hydraulic piston cylinder 4, thereby simulating the stroke adjustment process of the relay. The hydraulic press 21 is a manual hydraulic press, which is convenient for operators. The pressure gauge 22 can reflect the simulation test results to a certain extent. Through the cooperation of the hydraulic press 21 and the pressure gauge 22, operators can intuitively experience the simulated relay stroke adjustment process, thus providing training for the operators.

[0028] Example 2

[0029] In one embodiment, the base 1 has an installation groove, and the adjustment part 3, hydraulic piston cylinder 4, sliding plate 5 and elastic rubber 6 are all arranged in the installation groove. The head end face of the installation groove is fixedly connected to the adjustment part 3, and the tail end face of the installation groove is in corresponding contact with the elastic rubber 6. The two inner end faces of the installation groove can provide support for the adjustment part 3 and the elastic rubber 6.

[0030] In addition, the base 1 is also provided with a guide rail 8. The two rails of the guide rail 8 are located on both sides of the adjustment part 3 and the hydraulic piston cylinder 4, and the sliding piece 5 is slidably mounted on the guide rail 8. The guide rail 8 can limit the movement direction of the sliding piece 5, prevent the movement direction of the sliding piece 5 from deviating from the axis of the adjustment part 3 and the hydraulic piston cylinder 4, thereby affecting the experimental results, and avoiding wear or jamming caused by off-center loading; and the guide rail 8 is also located on the same axis as the adjustment part 3 and the hydraulic piston cylinder 4.

[0031] In addition, the adjustment part 3 includes a fixing nut 31, an adjusting screw 32, a supplementary screw 33, and a connecting nut 34. The fixing nut 31 is fixedly installed on the head end face of the mounting groove. The fixing nut 31 is threadedly connected to one end of the adjusting screw 32. The other end of the adjusting screw 32 is threadedly connected to one end of the supplementary screw 33 through a connecting flange. The other end of the supplementary screw 33 is threadedly connected to the connecting nut 34. The connecting nut 34 is threadedly connected to the telescopic end of the hydraulic piston cylinder 4.

[0032] The dual-screw design of adjusting screw 32 and supplementary screw 33 enables fine-tuning of the extension and retraction end of hydraulic piston cylinder 4. Adjusting screw 32 is responsible for coarse adjustment of the stroke, while supplementary screw 33 is used to compensate for errors caused by mechanical clearance or pressure fluctuations, ensuring the accuracy of the clamping stroke. Fixing nut 31 fixes one end of adjusting screw 32 to base 1 to prevent the screw from loosening under high pressure. Connecting nut 34 connects supplementary screw 33 to the extension and retraction end of hydraulic piston cylinder 4, ensuring that the adjusted position is stably transmitted to the piston cylinder.

[0033] In addition, if the extension and retraction stroke of the hydraulic piston cylinder 4 changes during the simulation test, the length of the adjusting screw 32 can be changed by turning the adjusting part of the adjusting screw 32, thereby allowing more stroke space for the hydraulic piston cylinder 4. According to the simulation test requirements, different models and specifications of hydraulic piston cylinder 4 need to be used. By replacing the supplementary screw 33 with different lengths, this simulation device can also be adapted.

[0034] In addition, by rotating the adjusting screw 32, the initial position of the hydraulic piston cylinder 4 can be quickly adjusted to simulate the clamping stroke requirements under different guide vane clearances; the compensation function of the supplementary screw 33 allows the device to maintain adjustment accuracy in dynamic pressure changes, that is, to simulate the difference between high and low head conditions of the water turbine.

[0035] Specifically, the thickness of the elastic rubber 6 is 140-160 mm, with 150 mm being the optimal choice.

[0036] Example 3

[0037] As one embodiment, a pressure sensor 9 is provided inside the elastic rubber 6, and a distance sensor 10 is provided on the connecting nut 34 for measuring the distance between the nut and the sliding piece 5; both the pressure sensor 9 and the distance sensor 10 are electrically connected to the host computer, which is installed on the side of the oil tank 24. Both the pressure sensor 9 and the distance sensor 10 can reflect the deformation of the elastic rubber 6, and the combination of the two can ensure the accuracy of the determination result of the deformation of the elastic rubber 6.

[0038] Furthermore, the host computer includes a data processor 11 and a display 12. The data processor 11 receives data from the pressure sensor 9 and the distance sensor 10, and its output pins are electrically connected to the display 12. Because the distance between the hydraulic piston cylinder 4 and the adjusting exercise mechanism 2 is relatively large, the display 12 can display data from a distance, showing pressure values, distance values, and other possible parameters in real time, such as a graphical interface or alarm information. Since both the pressure sensor 9 and the distance sensor 10 may output analog or digital signals, the data processor 11 needs to have multi-channel input capability, be able to process different types of sensor signals, and have certain data processing capabilities, such as real-time calculation and data storage. Specifically, the data processor 11 is a Siemens SIMAT IC S7-1200, with a CPU integrating 14 digital inputs / 10 digital outputs, supporting extended analog modules; supporting 4-20mA, 0-10V analog input, compatible with signals from the pressure sensor 9 and the distance sensor 10, with built-in data storage function and expandable via SD card, supporting real-time data acquisition and logical operations; the communication interface is Profi... net and RS485, facilitating communication with display 12;

[0039] In addition, the monitor 12 is a Weintek MT8102 IE industrial touch screen, which has a 10.1-inch TFT LCD screen with a resolution of 1280×800, a brightness of 500cd / m2, supports a wide temperature range of -20 to 60℃, and has a built-in Ethernet interface. It supports direct communication with S7-1200 PLC via the Profi net protocol, as well as multi-language interface, data trend chart, alarm pop-up window and other functions.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A relay stroke adjustment simulation device, characterized in that, It includes a base (1) and an adjustment exercise mechanism (2). The base (1) is equipped with an adjustment part (3), a hydraulic piston cylinder (4), a sliding plate (5) and an elastic rubber (6). One end of the adjustment part (3) is fixedly connected to the base (1), and the other end of the adjustment part (3) is fixedly connected to the telescopic end of the hydraulic piston cylinder (4). The cylinder head of the hydraulic piston cylinder (4) is fixedly connected to the sliding plate (5), and an elastic rubber (6) is provided between the cylinder tail and the base (1); the cylinder body of the hydraulic piston cylinder (4) is connected to the adjustment exercise mechanism (2) through the oil supply hose (7); The adjustment and training mechanism (2) includes an oil press (21), a pressure gauge (22) and an oil tank (24), wherein the oil outlet of the oil press (21) is connected to the oil delivery hose (7) through the pressure gauge (22) and the valve (23), and the oil inlet of the oil press (21) is connected to the oil tank (24).

2. The relay stroke adjustment simulation device according to claim 1, characterized in that: The base (1) has an installation groove, and the adjustment part (3), hydraulic piston cylinder (4), sliding plate (5) and elastic rubber (6) are all set in the installation groove. The head end face of the installation groove is fixedly connected to the adjustment part (3), and the tail end face of the installation groove is in contact with the elastic rubber (6).

3. The relay stroke adjustment simulation device according to claim 1, characterized in that: The base (1) is also provided with a guide rail (8), the two rails of the guide rail (8) are located on both sides of the adjustment part (3) and the hydraulic piston cylinder (4), and the sliding plate (5) is slidably installed on the guide rail (8).

4. The relay stroke adjustment simulation device according to claim 1, characterized in that: The adjustment part (3) includes a fixing nut (31), an adjusting screw (32), a supplementary screw (33), and a connecting nut (34). The fixing nut (31) is fixedly installed on the head end face of the mounting groove. The fixing nut (31) is threadedly connected to one end of the adjusting screw (32). The other end of the adjusting screw (32) is threadedly connected to one end of the supplementary screw (33) through a connecting flange. The other end of the supplementary screw (33) is threadedly connected to the connecting nut (34). The connecting nut (34) is threadedly connected to the telescopic end of the hydraulic piston cylinder (4).

5. The relay stroke adjustment simulation device according to claim 1, characterized in that: The thickness of the elastic rubber (6) is 140-160 mm.

6. The relay stroke adjustment simulation device according to claim 1, characterized in that: A pressure sensor (9) is installed inside the elastic rubber (6), and a distance sensor (10) is installed on the connecting nut (34) to measure the distance between the nut and the sliding plate (5); both the pressure sensor (9) and the distance sensor (10) are electrically connected to the host computer, which is installed on the side of the oil tank (24).

7. The relay stroke adjustment simulation device according to claim 6, characterized in that: The host computer includes a data processor (11) and a display (12), wherein the data processor (11) is used to receive data from the pressure sensor (9) and the distance sensor (10), and the output pin of the data processor (11) is electrically connected to the display (12).

8. The relay stroke adjustment simulation device according to claim 7, characterized in that: The data processor (11) is a Siemens SIMATIC S7-1200.

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