A teaching platform for a cylindrical valve mechanical hydraulic system of a hydro-generator set

Abstract

This utility model discloses a teaching platform for a cylindrical valve mechanical hydraulic system of a hydro-generator set, including a platform base. The platform base has an area for arranging hydraulic devices and a valve assembly placement area. An operation panel is also installed on the platform base, located on the surface of one end of the hydraulic device arrangement area. The operation panel includes a flat section and an inclined section. The inclined section of the operation panel has a pressure oil source integration port and a system return oil integration port connected by an oil circuit connecting pipe. A power supply module is also installed on the top of the flat section of the operation panel. The platform base has a cylindrical valve arrangement area for installing cylindrical valves, and the surface of the cylindrical valve arrangement area corresponds to the valve assembly placement area. This utility model has a simple structure, is quick to assemble and disassemble, is safe and reliable to use, has low manufacturing cost, can be reused for a long time, and can comprehensively simulate the actual installation of cylindrical valves, thus comprehensively improving the professional skills and emergency response capabilities of employees.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydropower teaching equipment, and in particular relates to a teaching platform for a cylindrical valve mechanical hydraulic system of a hydro-generator set. Background Technology

[0002] The cylindrical valve of a hydro-generator unit is usually installed between the fixed guide vanes and the movable guide vanes of the turbine. It is generally driven by a hydraulic cylinder to move the cylinder up and down to achieve rapid opening and closing. It is a valve device commonly used at the water inlet of a hydro-generator, mainly used to control water flow, regulate flow rate, or cut off water flow in an emergency to ensure the safe operation of the unit.

[0003] When the cylindrical valve is closed, the cylinder descends vertically into the flow channel, blocking the water flow. When the cylindrical valve is opened, the cylinder rises above the flow channel, allowing the water to flow freely. Compared with valves such as butterfly valves, ball valves, and gate valves, cylindrical valves have advantages such as low hydraulic loss, fast opening and closing speed, and low maintenance cost. They have now become one of the key equipment in modern large-scale hydropower stations, especially in situations requiring rapid flow closure and high head conditions, where they have irreplaceable advantages.

[0004] Currently, there is still a lack of teaching platforms or devices for the mechanical hydraulic system of cylindrical valves in hydro-generator units. This is not conducive to hydropower station employees making up for their skill gaps and improving their practical skills. For example, current hydropower station employees can generally only learn the hydraulic principle and mechanical structure of cylindrical valves through drawings or manuals. They lack an intuitive understanding of key operations such as seal adjustment, relay assembly and disassembly, and valve assembly, resulting in a lack of experience in handling faults and defects, and making them prone to operational errors in actual maintenance. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a teaching platform for the mechanical hydraulic system of the cylindrical valve of a hydro-generator unit. The platform has a simple structure, is quick to assemble and disassemble, is safe and reliable to use, has low manufacturing cost, can be reused for a long time, and fully simulates the actual installation of the cylindrical valve. It can quickly help hydropower station employees bridge the gap between theoretical teaching and on-site practice, and comprehensively improve employees' professional skills and emergency response capabilities.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A teaching platform for a hydro-generator set cylindrical valve mechanical hydraulic system includes a platform base. The platform base is provided with a hydraulic device arrangement area and a valve group placement area. A hydraulic device is arranged in the hydraulic device arrangement area. An operating plate is also installed on the platform base. The operating plate is located on the surface of one end of the hydraulic device arrangement area. The operating plate includes a flat section and an inclined section. The inclined section is located at the bottom of the operating plate and extends inclinedly towards the other end of the hydraulic device arrangement area. The surface of the other end of the hydraulic device arrangement area and the surface of the flat section of the operating plate both have an adsorption layer to form a hydraulic valve group arrangement area for adsorption of hydraulic valve groups. The inclined section of the operating plate is provided with a pressure oil source integration port and a system return oil integration port connected by an oil circuit connection pipe. A power supply module is also provided on the top of the flat section of the operating plate. The platform base is provided with a cylindrical valve arrangement area for installing cylindrical valves. The surface of the cylindrical valve arrangement area corresponds to the surface of the valve group placement area.

[0008] This implementation method involves selecting the required valve group and cylindrical valve in the valve group placement area according to the test project, attaching the valve group to the hydraulic valve group arrangement area, connecting each oil port through the oil circuit connection pipe, and connecting the power supply module. The teaching test can then be carried out by starting the hydraulic device. The operation is simple and convenient. By operating the power supply module, various actions of the cylindrical valve can be realized, enabling trainees to intuitively understand key operations such as sealing adjustment of the cylindrical valve, disassembly and assembly of the relay, and valve group assembly, thus avoiding operational errors in actual maintenance work.

[0009] In one embodiment, the hydraulic device includes a return oil tank, which is connected to the pressure oil source integration port via an oil outlet pipe. The return oil tank is also connected to the system return oil integration port via a return oil pipeline. A filter, a pressure oil pump, a one-way valve, and an accumulator are sequentially arranged on the oil outlet pipe along the oil outlet direction.

[0010] In this embodiment, a hydraulic device is used as the core hydraulic power source to provide stable hydraulic power to the system and collect return oil. A filter is used to ensure the quality of the oil at the pump inlet. An accumulator converts the energy of the pump outlet pressure oil into compressive energy for storage. It can also convert the compressive energy into hydraulic energy and release it when the pump stops to replenish the system. The accumulator outlet pipeline is fixedly connected to the pressure oil source integration port. The one-way valve ensures that the system remains in a pressure-maintaining state when the pump stops and also prevents oil backflow that could damage the pump.

[0011] In one embodiment, the return oil tank and the one-way valve are also connected via a return oil pipe of a pressure oil pump overflow valve;

[0012] In this embodiment, the oil pump uses an overflow valve to regulate the outlet oil supply pressure, and the overflowed oil flows back to the return tank through the oil return pipe of the oil pump overflow valve.

[0013] In one embodiment, the return oil pipeline includes a system main return oil pipeline connected to the return oil tank. The system main return oil pipeline is connected to a system return oil pipeline and a system manual drain oil pipeline. The system return oil pipeline is connected to the system return oil integration port. The system manual drain oil pipeline is connected to the oil outlet pipeline between the one-way valve and the accumulator. The system manual drain oil pipeline is equipped with a valve and a pressure gauge.

[0014] In this embodiment, the valve is a manual drain valve of the system, which can be kept closed when the teaching platform is running normally. When the test is completed or a fault occurs, this valve can be opened to release pressure and drain oil from the system. The pressure gauge is used to assist the oil pump in adjusting the outlet pressure and monitoring the system pressure through the relief valve.

[0015] In one embodiment, the hydraulic valve assembly includes a magnetic base and a valve assembly disposed on the magnetic base. The oil port of the valve assembly is also provided with a valve assembly quick connector, which is a male connector.

[0016] In one embodiment, both ends of the oil circuit connecting pipe are equipped with quick-connect fittings, which are female fittings corresponding to the quick-connect fittings of the valve assembly.

[0017] In one embodiment, the cylindrical valve includes a cylindrical body and a relay connected to each other. The relay has an upper oil inlet and a lower oil inlet at its two ends. The relay also includes a piston and a lifting rod connected to the piston. The end of the lifting rod away from the piston has an external thread. The top of the cylindrical body has a threaded hole corresponding to the external thread.

[0018] In one embodiment, the cylindrical valve arrangement area is provided with a relay mounting plate, and the relay mounting plate has a plurality of lifting rod through holes for the lifting rod to pass through.

[0019] In one embodiment, the power supply line of the power supply module is led along the inside of the operation panel to the hydraulic device arrangement area. The power supply module includes multiple power supply areas arranged side by side. Each power supply area is provided with an electromagnet power take-off hole, a circumferential button and a stop button.

[0020] In this implementation method, the power supply module provides power to components such as the oil pump motor, solenoid valve, and sensors. Multiple power supply areas can be freely arranged with power access holes and function knobs as needed, which facilitates wiring and personnel control.

[0021] In one embodiment, the surfaces of the hydraulic valve assembly area and the book search relay mounting plate are both made of cold-rolled steel sheet.

[0022] The beneficial effects of this utility model are as follows:

[0023] This teaching platform has multiple functional areas that work together seamlessly. It features a simple structure, quick assembly and disassembly, safe and reliable use, low manufacturing cost, and can be reused for a long time. Operation is simple and convenient. By operating the power supply module, it comprehensively simulates the actual installation of cylindrical valves, enabling trainees to intuitively understand key operations such as valve sealing adjustment, relay assembly and disassembly, and valve assembly. This platform can quickly help hydropower station employees bridge the gap between theoretical teaching and on-site practice, preventing operational errors in actual maintenance work. Attached Figure Description

[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein:

[0025] Figure 1 A schematic diagram of the experimental platform of this utility model is shown;

[0026] Figure 2 A schematic diagram of the hydraulic device system of this utility model is shown;

[0027] Figure 3 A schematic diagram of the hydraulic valve assembly of this utility model is shown;

[0028] Figure 4 A schematic diagram of the oil circuit connection pipe of this utility model is shown;

[0029] Figure 5 A schematic diagram of the cylindrical valve of this utility model is shown;

[0030] Figure 6 A schematic diagram of the power supply module of this utility model is shown;

[0031] Figure 7 A schematic diagram illustrating the use of the teaching platform of this utility model is shown;

[0032] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0033] Figure label:

[0034] 1-Test platform, 2-Hydraulic device, 3-Hydraulic valve assembly, 4-Oil circuit connection pipe, 5-Cylinder valve, 6-Power supply area, 10-Hydraulic device layout area, 11-Hydraulic valve assembly layout area, 12-Power supply module, 13-Valve assembly placement area, 14-Pressure oil source integration port, 15-System return oil integration port, 16-Cylinder valve layout area, 20-Return oil tank, 21-Filter, 22-Oil pump, 23-Accumulator, 24-Valve, 25-Pressure gauge, 26-Check valve, 30-Magnetic base, 31-Valve assembly, 50-Cylinder body, 51-Relay device, 201-System main return oil pipe, 202-Oil pump Overflow valve return oil pipe, 231-outlet pipe, 311-valve group quick connector, 401-pipe quick connector, 511-upper chamber oil port, 512-lower chamber oil port, 513-piston, 514-lifting rod, 601-left electromagnet power take-off hole, 602-right electromagnet power take-off hole, 603-left reversing button, 604-right reversing button, 605-stop button, 606-cable, 1101-surface of hydraulic device arrangement area, 1102-flat section, 1601-lifting rod through hole, 1602-relay device mounting plate, 2011-system return oil pipe, 2012-system manual drain oil pipe. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] This utility model provides a teaching platform for a cylindrical valve mechanical hydraulic system of a hydro-generator set, including a test platform 1 as the main basic structure. The test platform 1 includes a platform base, and the platform base is provided with an oil pressure device arrangement area 10 and a valve assembly placement area 13, such as... Figure 1 As shown, the hydraulic device arrangement area 10 is located at the lower left of the test platform 1, with a double-leaf swing door. The hydraulic device 2 is installed inside. The valve group placement area 13 is located on the right side of the hydraulic device arrangement area 10, that is, at the lower right of the test platform, with a single-leaf swing door. The interior is used to store valve groups, oil circuit connecting pipes 4, relays, sensors and other components. An operating panel is also installed on the platform base. The operating panel is located on the surface of one end of the hydraulic device arrangement area 10. The operating panel includes a flat section 1102 and an inclined section. The inclined section is located at the bottom of the operating panel and extends inclinedly towards the other end of the hydraulic device arrangement area 10. The surface 1101 of the hydraulic device arrangement area at one end and the surface of the flat section 1102 of the operating panel both have an adsorption layer to form a hydraulic valve group arrangement area 11 for the hydraulic valve group 3 to be adsorbed. The inclined section of the operating panel is provided with a pressure oil source integration port 14 and a system return oil integration port 15 connected through the oil circuit connecting pipe 4. A power supply module 12 is also provided on the top of the flat section 1102 of the operating panel.

[0037] It should be noted that, according to the test project, the required hydraulic valve group 3 and cylindrical valve 5 can be selected in the valve group placement area 13. The hydraulic valve group 3 is attached to the hydraulic valve group arrangement area 11, and the oil ports are connected through the oil circuit connection pipe 4. The power supply module 12 is also connected. The power supply module 12 can provide multiple voltage levels such as AC 380V, 220V and DC 24V, 12V for the entire teaching platform. The teaching test can be carried out by starting the hydraulic device 2. The operation is simple and convenient. By operating the power supply module 12, various actions of the cylindrical valve 5 can be realized, so that students can intuitively understand the key operations such as sealing adjustment of the cylindrical valve 5, disassembly and assembly of the relay and assembly of the hydraulic valve group 3, and avoid operational errors in actual maintenance work.

[0038] Furthermore, such as Figure 2 As shown, the hydraulic device 2 consists of a return oil tank 20, a filter 21, a hydraulic pump 22, an accumulator 23, a valve 24, a pressure gauge 25, and a check valve 26. It can provide stable hydraulic power for the system and collect return oil. The return oil tank 20 and the check valve 26 are also connected through the return oil pipe 202 of the hydraulic pump overflow valve. The return oil pipeline includes a system main return oil pipe 201 connected to the return oil tank 20. The system main return oil pipe 201 is connected to the system return oil pipe 2011 and the system manual drain pipe 2012. The system return oil pipe 2011 is connected to the system return oil integration port 14. The system manual drain pipe 2012 is connected to the oil outlet pipe between the check valve 26 and the accumulator 23. The system manual drain pipe 2012 is equipped with a valve 24 and a pressure gauge 25.

[0039] It should be noted that in this embodiment, the system main return oil pipe 201 is an integrated pipeline of the system return oil pipe 2011 and the system manual drain oil pipe 2012. The system return oil pipe 2011 is fixedly connected to the system return oil integration port 15. The filter 21 serves as the inlet filter of the pressure oil pump 22 to ensure the quality of the oil at the pump inlet. The pressure oil pump 22 has a built-in overflow valve to adjust the outlet oil supply pressure. The overflowed oil flows back to the return oil tank 20 through the pressure oil pump overflow valve return oil pipe 202. The accumulator 23 can convert the energy of the pressure oil at the pump outlet into compressible energy for storage, and can also be used for... When the hydraulic pump stops, it converts the compressed energy into hydraulic energy and releases it to replenish the system. Its outlet pipe 231 is fixedly connected to the pressure oil source integration port 14. Valve 24 is the system's manual drain valve. It is kept closed when the teaching platform is running normally. When the test is completed or a fault occurs, this valve can be opened to depressurize and drain the system. The pressure gauge 25 is used to assist the hydraulic pump in adjusting the outlet pressure and monitoring the system pressure through the relief valve. The check valve 26 ensures that the system is still in a pressure-holding state when the hydraulic pump stops and can also prevent oil backflow from damaging the hydraulic pump 22.

[0040] In one embodiment, such as Figure 3As shown, each hydraulic valve group 3 includes a magnetic base 30 and a valve group 31 disposed on the magnetic base 30. The oil port of the valve group 31 is also provided with a valve group quick connector 311, which is a male connector.

[0041] Furthermore, such as Figure 4 As shown, both ends of the oil circuit connecting pipe 4 have quick-connect fittings 401, the middle connecting pipe 40 is a flexible hose, and the quick-connect fitting 401 is a female head corresponding to the valve group quick-connect fitting 311, so that it can quickly and stably connect each hydraulic valve group 3 and the cylindrical valve 5.

[0042] In one embodiment, such as Figure 5 As shown, the cylindrical valve 5 includes a cylindrical body 50 and a relay 51 connected to each other. It serves as the execution component of the teaching platform. The two ends of the relay 51 are respectively provided with an upper chamber oil port 511 and a lower chamber oil port 512. The relay 51 is also provided with a piston 513 and a lifting rod 514 connected to the piston 513. The end of the lifting rod 514 away from the piston 513 has an external thread. The top of the cylindrical body 50 is provided with a threaded hole corresponding to the external thread. Correspondingly, the cylindrical valve arrangement area 16 is provided with a relay mounting plate 162. The relay mounting plate 162 is provided with multiple lifting rod through holes 161 for the lifting rod 514 to pass through. At the same time, the lower end cover of the relay 51 is made of magnetic material so as to be attracted to the relay mounting plate 162.

[0043] In one embodiment, the power supply module 12 is used to supply power to the electrical components in the system. The power supply line of the power supply module 12 is led along the inside of the operation panel to the hydraulic device arrangement area 10. The power supply module 12 includes multiple power supply areas 6 arranged side by side. Each power supply area 6 is provided with an electromagnet power take-off hole, a circumferential button and a stop button. Each area is responsible for the power supply of one or two components (referring to DC power supply such as 24V and 12V). The power supply arrangement of each area can be freely combined and arranged according to the situation. In this embodiment, taking the leftmost power supply area 6 as an example, and taking the arrangement suitable for electromagnetic reversing valves as an example, this area is provided with a left electromagnet power take-off hole 601 and a right electromagnet power take-off hole 602. The electrical components take power from the left electromagnet power take-off hole 601 and the right electromagnet power take-off hole 602 through the cable 606. The left reversing button 603, the right reversing button 604 and the stop button 605 can realize the individual power supply or power cut-off of each line of the electromagnetic valve, thereby controlling the action or return of the valve core of the valve group.

[0044] In one embodiment, such as Figure 7As shown, according to teaching needs, the hydraulic device 2, power supply module 6, hydraulic valve group 3, oil circuit connecting pipe 4, and cylindrical valve 5 are installed on the test platform 1 in advance. The hydraulic pump 22 is turned on to provide pressurized oil to the system. After checking that there are no abnormalities, the left reversing button 604 of the solenoid valve is manually pressed. The lower chamber oil port 511 of the servo valve 5 is connected to pressurized oil, and the upper chamber oil port 512 is connected to return oil. The cylinder moves downward (here, the left reversing button controls the cylindrical valve to rise, and the right reversing button controls the cylindrical valve to fall). In case of emergency, the stop button 606 is pressed, all solenoid valve coils are de-energized, and the system can be immediately... After stopping operation and completing the test, open the system's manual drain valve to release the pressurized oil into the return oil tank 20. Then, sequentially remove the oil circuit connecting pipe 4, cable 606, hydraulic valve group 3, and cylindrical valve 5, and store them in the valve group placement area 13. By operating the power supply module 12, the actual installation of the cylindrical valve 5 can be fully simulated, allowing trainees to intuitively understand key operations such as the sealing adjustment of the cylindrical valve 5, the disassembly and assembly of the relay, and the assembly of the hydraulic valve group 3. This can quickly help hydropower station employees bridge the gap between theoretical teaching and on-site practice, and avoid operational errors in actual maintenance operations.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A teaching platform for hydraulic system of hydraulic turbine generator cylindrical valve mechanism, characterized in that, The system includes a platform base, which has a hydraulic device arrangement area and a valve assembly placement area. A hydraulic device is installed in the hydraulic device arrangement area. An operating panel is also mounted on the platform base. The operating panel is located on the surface of one end of the hydraulic device arrangement area. The operating panel includes a flat section and an inclined section. The inclined section is located at the bottom of the operating panel and extends inclinedly towards the other end of the hydraulic device arrangement area. Both the surface of the other end of the hydraulic device arrangement area and the surface of the flat section of the operating panel have an adsorption layer to form a hydraulic valve assembly arrangement area for adsorption by the hydraulic valve assembly. The inclined section of the operating panel has a pressure oil source integration port and a system return oil integration port connected via an oil circuit connection pipe. A power supply module is also installed on the top of the flat section of the operating panel. The platform base has a cylindrical valve arrangement area for installing cylindrical valves, and the surface of the cylindrical valve arrangement area corresponds to the surface of the valve assembly placement area.

2. The teaching platform of mechanical hydraulic system of cylindrical valve of hydroelectric generating unit according to claim 1, characterized in that, The hydraulic device includes a return oil tank, which is connected to the pressure oil source integration port via an oil outlet pipe. The return oil tank is also connected to the system return oil integration port via a return oil pipeline. A filter, a pressure oil pump, a one-way valve, and an accumulator are sequentially arranged on the oil outlet pipe along the oil outlet direction.

3. The teaching platform of mechanical hydraulic system of cylindrical valve of hydroelectric generating unit according to claim 2, characterized in that, The return oil tank and the one-way valve are also connected via the return oil pipe of the pressure oil pump overflow valve.

4. The teaching platform of mechanical hydraulic system of cylindrical valve of hydroelectric generating unit according to claim 2, characterized in that, The return oil pipeline includes a system main return oil pipeline connected to the return oil tank. The system main return oil pipeline is connected to a system return oil pipeline and a system manual drain oil pipeline. The system return oil pipeline is connected to the system return oil integration port. The system manual drain oil pipeline is connected to the oil outlet pipeline between the one-way valve and the accumulator. The system manual drain oil pipeline is equipped with a valve and a pressure gauge.

5. The teaching platform of mechanical hydraulic system of cylindrical valve of hydroelectric generating unit according to claim 1, characterized in that, The hydraulic valve assembly includes a magnetic base and a valve assembly mounted on the magnetic base. The oil port of the valve assembly is also provided with a valve assembly quick connector, which is a male connector.

6. A teaching platform for a hydro-generator set cylindrical valve mechanical hydraulic system according to claim 5, characterized in that, Both ends of the oil circuit connecting pipe are equipped with quick-connect fittings, which are female fittings corresponding to the quick-connect fittings of the valve group.

7. The teaching platform of mechanical hydraulic system of cylindrical valve of a hydroelectric generator unit according to claim 1, characterized in that, The cylindrical valve includes a cylindrical body and a relay connected to each other. The two ends of the relay are respectively provided with an upper chamber oil inlet and a lower chamber oil inlet. The relay is also provided with a piston and a lifting rod connected to the piston. The end of the lifting rod away from the piston has an external thread. The top of the cylindrical body is provided with a threaded hole corresponding to the external thread.

8. The teaching platform of mechanical hydraulic system of cylindrical valve of a hydroelectric generating unit according to claim 7, characterized in that, The cylindrical valve arrangement area is provided with a relay mounting plate, and the relay mounting plate has multiple lifting rod through holes for the lifting rod to pass through.

9. The teaching platform of mechanical hydraulic system of cylindrical valve of a hydroelectric generator unit according to claim 1, characterized in that, The power supply line of the power supply module is led along the inside of the operation panel to the hydraulic device arrangement area. The power supply module includes multiple power supply areas arranged side by side. Each power supply area is provided with an electromagnet power take-off hole, a circumferential button and a stop button.

10. The teaching platform of mechanical hydraulic system of cylindrical valve of a hydroelectric generating unit according to claim 8, characterized in that, The surfaces of the hydraulic valve assembly area and the book search relay mounting plate are both made of cold-rolled steel plates.

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