A water turbine generator air brake piston dismounting device

Abstract

The utility model discloses a water -turbine generator air brake piston dismounting device, including support component, the support component includes fixed disc, set up in the fixed disc bottom side's support foot and set up in the support foot bottom -end's limiting piece, torsion spare, torsion spare with fixed disc screw pair connection, crossbeam, crossbeam with torsion spare rotation is connected, the utility model has the advantages that the fixed disc outer diameter is equal with the air brake cylinder body inner diameter nominal size, sets up the support foot on the air brake cylinder body, and the antiskid layer of support foot bottom side is convenient for keeping stable, and the contact surface a of limiting piece and support foot is stuck in the air brake cylinder body outside, and the crossbeam is connected with the piston through the connecting hole, and the piston has the coaxial degree with the cylinder body, and makes the piston upward rise through the rotation torsion disc, and the device is simple to operate, and can be operated by a single person.

Description

Technical Field

[0001] This utility model relates to the field of hydro-generator maintenance technology, and in particular to a hydro-generator wind gate piston disassembly device. Background Technology

[0002] To ensure the safe and stable operation of the hydro-generator, it needs to be overhauled annually. During the overhaul, the airlock needs to be completely disassembled. Each airlock weighs 300 kg, and the piston inside needs to be pulled out during the overhaul. Since each piston weighs 50 kg, and there is a risk of jamming between the piston and the airlock cylinder, it is difficult to pull the piston out manually. Currently, the method of pulling out the internal piston is to use a hand-operated hoist to force it out. This method is not only inefficient but also easily damages the airlock. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is that the existing technology of using a hand hoist or other means to forcefully pull out the piston inside the air damper will damage the air damper.

[0004] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a hydraulic generator wind gate piston disassembly device, which includes a support assembly, the support assembly including a fixed plate, a support leg disposed on the bottom side of the fixed plate, and a limiting member disposed at the bottom end of the support leg; A torque member, which is connected to the fixed disc via a threaded connection; A crossbeam, which is rotatably connected to the torsion member.

[0005] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the outer diameter of the fixed plate is equal to the nominal size of the inner diameter of the wind gate cylinder, and is used to position and cooperate with the cylinder port to maintain the coaxiality of the piston and the cylinder. The fixed plate includes a threaded hole at its center, and the threaded hole is used for the threaded connection of the torque component.

[0006] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the threaded hole is a trapezoidal thread.

[0007] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the fixing plate further includes through holes symmetrically arranged along the circumference of the threaded hole.

[0008] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the support legs extend vertically along the bottom side of the fixed plate and at least two are provided, and the bottom side of the support legs is provided with an anti-slip layer.

[0009] In a preferred embodiment of the turbine generator wind gate piston disassembly device of this utility model: the limiting member is fixedly arranged along the outer side of the support leg.

[0010] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the distance between the limiting member and the contact surface a of the support foot and the bottom side of the support foot is h.

[0011] In a preferred embodiment of the turbine generator wind gate piston disassembly device of this utility model: the torque component includes a torque disc and a connecting rod disposed on the bottom side of the torque disc. The connecting rod is threadedly connected to a threaded hole to convert the rotational motion of the torque disc into the axial upward motion of the connecting rod.

[0012] In a preferred embodiment of the hydro-generator wind gate piston disassembly device of this utility model: the connecting rod is provided with a groove near the bottom end.

[0013] In a preferred embodiment of the turbine generator wind gate piston disassembly device of this utility model: the crossbeam includes a crossbeam body, a limiting platform disposed on the crossbeam body, and connecting holes symmetrically disposed along the limiting platform. The connecting rod is rotatably connected to the limiting platform through the groove. The limiting platform has an accommodating space A inside.

[0014] The beneficial effects of this utility model are as follows: the outer diameter of the fixed plate is equal to the nominal size of the inner diameter of the air damper cylinder, the support foot is mounted on the air damper cylinder, the anti-slip layer on the bottom side of the support foot facilitates stability, the limiting member and the contact surface a of the support foot are locked on the outer side of the air damper cylinder, the crossbeam is connected to the piston through the connecting hole, the piston and the cylinder have coaxiality, and the piston is raised by rotating the torque plate. The device is simple to operate and can be operated by a single person. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 A structural diagram of a hydraulic generator airlock piston disassembly device is shown. Figure 2 A side view of a hydraulic generator air brake piston disassembly device is shown; Figure 3 A cross-sectional view of a hydraulic generator wind gate piston disassembly device is shown; Figure 4 A top view of a hydraulic generator wind gate piston disassembly device is shown; Figure 5 A partially enlarged sectional view of the beam is shown. Detailed Implementation

[0016] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0018] Reference Figure 1 This embodiment provides a hydraulic generator wind gate piston disassembly device, including a bracket assembly 1, a torsion member 2, and a crossbeam 3.

[0019] Specifically, the support assembly 1 includes a fixed plate 11, a support leg 12 disposed on the bottom side of the fixed plate 11, and a limiting member 13 disposed at the bottom end of the support leg 12. The limiting member 13 is used to lock onto the outer wall of the air damper cylinder body, so that the whole device can remain stable.

[0020] Specifically, the torque member 2 is connected to the fixed plate 11 by a threaded pair, and the torque member 2 is used to convert the rotational motion into axial lifting motion.

[0021] Specifically, the crossbeam 3 is rotatably connected to the torsion member 2. When the torsion member 2 rotates, it prevents the piston from rotating in a circular motion. That is, the crossbeam 3 and the piston are fixed in a limited position when the device is in use. The crossbeam 3 only causes the piston to move up and down, and will not drive the piston to rotate with the torsion member 2.

[0022] Preferably, a laser scanning flaw detector is installed on the support leg 12. The number of laser scanning flaw detectors is determined according to the number of support legs 12. Each laser scanning flaw detector is used to scan a portion of the piston area. In this embodiment, the laser scanning flaw detector is a coaxial composite probe of infrared thermal imaging and line laser. Its scanning resolution is ≤0.05mm and it can identify surface scratches with a depth ≥0.01mm. The specific model of the laser scanning flaw detector is not described here.

[0023] In use, the support leg 12 of the bracket assembly 1 is placed on the airlock cylinder body, and the limiting member 13 is locked on the outer wall of the airlock cylinder body. The crossbeam 3 and the piston are fixed in place when the device is in use. The crossbeam 3 only causes the piston to move up and down, and does not drive the piston to rotate with the torque member 2. The torque member 2 is used to convert the rotational motion into axial up and down motion, so that the piston is pulled out of the airlock cylinder body when the torque member 2 is rotated. The device is simple to operate and can be used by a single person. Moreover, the piston only moves upward, avoiding scratches caused by forcibly pulling the airlock cylinder body in the prior art.

[0024] Reference Figures 1-3 As an optional embodiment, the outer diameter of the fixed plate 11 is equal to the nominal inner diameter of the air damper cylinder, and is used to position and cooperate with the cylinder port to maintain the coaxiality of the piston and the cylinder. The size of the fixed plate 11 is set to maintain coaxiality and reduce the contact between the piston and the air damper cylinder. There is a certain gap between the piston and the air damper cylinder. In the prior art, removing the piston by hand-operated hoist may cause the air damper cylinder to come into contact, causing scratches to the inside of the cylinder. The fixed plate 11 includes a threaded hole 111 set at its center. The threaded hole 111 is used for threaded connection of the torque member 2. The torque member 2 is threadedly connected to the fixed plate 11. When the torque member 2 is rotated, the torque member 2 will generate a lifting and lowering motion on the fixed plate 11.

[0025] Furthermore, the threaded hole 111 is a trapezoidal thread. The threaded hole 111 adopts a trapezoidal thread, which forms a sliding helical pair with the trapezoidal external thread of the connecting rod 22. The trapezoidal thread has high root strength and good centering. Under the same cross-sectional size, it can withstand more than 30% of the greater axial pull-out force. Moreover, the thread side clearance is not sensitive to dust and water stains. It can continuously rotate without sticking or jamming in the high humidity and dusty environment of the wind tunnel. This ensures that a single person can stably pull out the piston with a manual force of less than 200 N·m and maintain the coaxiality of the piston and the cylinder.

[0026] Preferably, the fixed plate 11 also includes through holes symmetrically arranged along the circumference of the threaded hole 111. The purpose of the through holes is to reduce weight and facilitate the reduction of weight when a single person is operating the equipment.

[0027] Furthermore, the support legs 12 extend vertically along the bottom side of the fixed plate 11 and at least two are provided. The support legs 12 are perpendicular to the fixed plate 11, which enables the support legs 12 to axially fix the disassembly device and the air damper. The bottom side of the support legs 12 is provided with an anti-slip layer 121, which further helps the stability of the entire device when it is mounted on the air damper cylinder.

[0028] Furthermore, the limiting member 13 is fixedly installed along the outer side of the support leg 12. Since the outer diameter of the fixing plate 11 is equal to the nominal size of the inner diameter of the air damper cylinder, it ensures that the contact surface a between the limiting member 13 and the support leg 12 is located on the outer side of the air damper cylinder.

[0029] Furthermore, the distance h between the contact surface a of the limiting member 13 and the support leg 12 and the bottom side of the support leg 12, the height h of the limiting member 13 extending from the support leg 12, the anti-slip layer 121 provided on the bottom side of the support leg 12, and the fixed installation of the limiting member 13 along the outer side of the support leg 12 are all for the purpose of providing better stability for the operator when using the device.

[0030] Reference Figures 1-5 As an optional embodiment, the torque component 2 includes a torque disk 21 and a connecting rod 22 disposed on the bottom side of the torque disk 21. The connecting rod 22 is threadedly connected to the threaded hole 111 to convert the rotational motion of the torque disk 21 into the axial upward motion of the connecting rod 22. The trapezoidal thread connection between the connecting rod 22 and the threaded hole 111 is existing technology. For example, the connecting rod 22 is a Tr 16×4 single-start trapezoidal external thread with a tooth angle of 30° and a tooth crest width of 2 mm. It forms a 4 mm lead sliding pair with the Tr 16×4 internal thread of the threaded hole 111. When a tangential force of 120N (approximately 18N·m torque) is applied at a radius of 150mm on the torque disk 21, the connecting rod 22 can generate an axial tensile force of ≥2.1kN, which is greater than 1.5 times the self-weight of the air brake piston of 50kg, and can be manually pulled out by a single person.

[0031] Preferably, the connecting rod 22 is provided with a groove 221 near the bottom end. The groove 221 facilitates the engagement with the limiting platform 32 of the crossbeam 3, so that the crossbeam 3 can rotate horizontally on the connecting rod 22.

[0032] Reference Figures 1-5 As an optional embodiment, the crossbeam 3 includes a crossbeam body 31, a limiting platform 32 disposed on the crossbeam body 31, and connecting holes 33 symmetrically disposed along the limiting platform 32. The crossbeam 3 is connected to the piston through the connecting holes 33. In this embodiment, the crossbeam 3 and the piston can be connected by various methods such as screw connection when the piston needs to be removed. The connecting rod 22 is rotatably connected to the limiting platform 32 through the groove 221. The limiting platform 32 has an accommodating space A inside. The connecting rod 22 is disposed in the accommodating space A of the limiting platform 32 from the groove 221 to the bottom end.

[0033] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A device for disassembling the piston of a hydro-generator wind gate, characterized in that: include, The bracket assembly (1) includes a fixed plate (11), a support leg (12) disposed on the bottom side of the fixed plate (11), and a limiting member (13) disposed at the bottom end of the support leg (12). Torque member (2), which is threadedly connected to the fixed disk (11); The crossbeam (3) is rotatably connected to the torsion member (2).

2. The hydraulic generator wind gate piston disassembly device according to claim 1, characterized in that: The outer diameter of the fixed disk (11) is equal to the nominal inner diameter of the air damper cylinder, and is used to position and cooperate with the cylinder port to maintain the coaxiality of the piston and the cylinder. The fixed disk (11) includes a threaded hole (111) set at its center, and the threaded hole (111) is used for the threaded connection of the torque member (2).

3. The hydraulic generator wind gate piston disassembly device according to claim 2, characterized in that: The threaded hole (111) is a trapezoidal thread.

4. The hydraulic generator wind gate piston disassembly device according to claim 2, characterized in that: The fixed plate (11) also includes through holes symmetrically arranged along the circumference of the threaded hole (111).

5. The hydraulic generator wind gate piston disassembly device according to claim 1, characterized in that: The support leg (12) extends vertically along the bottom side of the fixed plate (11) and at least two of them are provided. The bottom side of the support leg (12) is provided with an anti-slip layer (121).

6. The hydraulic generator wind gate piston disassembly device according to claim 2, characterized in that: The limiting member (13) is fixedly installed along the outer side of the support leg (12).

7. The hydraulic generator wind gate piston disassembly device according to claim 6, characterized in that: The distance h between the contact surface a of the limiting member (13) and the support leg (12) and the bottom side of the support leg (12) is 1.

8. The hydraulic generator wind gate piston disassembly device according to claim 1, characterized in that: The torque component (2) includes a torque disk (21) and a connecting rod (22) disposed on the bottom side of the torque disk (21). The connecting rod (22) is threadedly connected to a threaded hole (111) to convert the rotational motion of the torque disk (21) into the axial upward motion of the connecting rod (22).

9. The hydraulic generator wind gate piston disassembly device according to claim 8, characterized in that: The connecting rod (22) has a groove (221) near its bottom end.

10. The hydraulic generator wind gate piston disassembly device according to claim 9, characterized in that: The crossbeam (3) includes a crossbeam body (31), a limiting platform (32) disposed on the crossbeam body (31), and connecting holes (33) symmetrically disposed along the limiting platform (32). The connecting rod (22) is rotatably connected to the limiting platform (32) through the groove (221). The limiting platform (32) has an accommodating space A inside.

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