Water turbine seat ring volute tensioning screw supporting device

Abstract

The utility model discloses a water turbine seat ring volute tensioning screw supporting device which comprises a mounting plate, supporting legs and a rotating sleeve, the supporting legs are fixedly arranged on the outer side of the bottom of the mounting plate, the rotating sleeve rotationally penetrates through the top of the mounting plate, and a supporting sleeve is arranged in the rotating sleeve in a threaded mode. Through the design of a pure mechanical structure, the supporting sleeve can drive the seat ring volute tensioning screw rod to carry out lifting treatment in the longitudinal direction only by manually rotating the driving assembly by a worker, the operation mode is time-saving and labor-saving, the working difficulty and the working strength of the worker are reduced, and the working efficiency is improved. Not only is the efficiency of lifting the volute tensioning screw ensured, but also the cost of subsequent production and manufacturing of the device is reduced. Through the design of a locking function, the state of the seat ring volute tensioning screw after being lifted can be locked, so that the situation that the lifted seat ring volute tensioning screw deviates due to the fact that the driving assembly is accidentally touched by a worker is avoided, and the stability of the seat ring volute tensioning screw after being lifted is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, in particular to a tightening screw supporting device for a turbine seat ring volute. Background Art

[0002] The seat ring volute tensioning screw is a key component of the flow channel of the hydropower station and the basic support of the turbine. It bears the head force and the operating load of the unit. After the seat ring volute tensioning screw is hoisted on the concrete foundation, it is firmly fixed by the lower tensioning screw. The tensioning screw is long and heavy, so it needs to be hoisted into the embedded casing in advance. After the seat ring volute tensioning screw is in place, it is lifted from the bottom to the seat ring volute tensioning screw screw hole and screwed in. The space above the tensioning screw is narrow and cannot be hoisted. It can only be installed by jacking from below. The tensioning screw is usually slowly lifted by jacks, levers and manpower on site, and supports of different heights are placed for rotation and adjustment. After the tensioning screw is lifted into place, it needs to be rotated and screwed into the seat ring volute tensioning screw bolt hole. However, due to the large weight of the tensioning screw and the large friction with the bottom support, the rotation operation is extremely difficult, and slippage is easy to occur during rotation and lifting, which has a high safety risk. At the same time, each unit has a large number of seat ring and volute tensioning screws, and the lifting efficiency is low. Usually this process takes a long time.

[0003] The patent name is "CN219279387U", which is published as: A lifting device for the tensioning screw of the seat ring volute of a hydropower project. The public document solves the above problems, but the device in the public document uses a hydraulic pump to drive a hydraulic cylinder to lift the tensioning screw of the seat ring volute. During the use of this lifting method, it is necessary to ensure the sealing of the connecting pipeline between the hydraulic pump and the cylinder. When the connecting pipeline is damaged, the oil will leak, causing the cylinder to fail to operate normally. At this time, the staff needs to replace or repair the connecting pipeline, which increases the work intensity and difficulty of the staff. At the same time, it also delays the progress of lifting the tensioning screw of the seat ring volute. In addition, the public document increases the cost of subsequent processing and manufacturing of the overall device by designing a hydraulic pump and a hydraulic cylinder. Based on this, the utility model designs a support device for the tensioning screw of the seat ring volute of a turbine to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a turbine seat ring volute tightening screw support device to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turbine seat ring volute tensioning screw support device, comprising a mounting plate, a support leg and a rotating sleeve, the support leg being fixedly arranged on the outer side of the bottom of the mounting plate, the rotating sleeve rotatingly passing through the top of the mounting plate, the rotating sleeve internal thread being provided with a support sleeve, a driving assembly being provided on the right side of the bottom of the mounting plate, the driving assembly comprising a reinforcing plate fixedly arranged on the right side of the bottom of the mounting plate, a rotating rod being connected to the right side of the bottom of the mounting plate, the bottom of the rotating rod being connected to the reinforcing plate by a transfer, a driving gear fixedly sleeved on the upper end of the outer side of the rotating rod being meshed with the teeth of a driven gear fixedly sleeved on the lower end of the outer side of the rotating sleeve, a connecting plate being fixedly arranged on the right side of the top of the reinforcing plate, a worm being rotatably passed through the upper end of the right side of the connecting plate, and the worm passing through the reinforcing plate, a worm wheel fixedly sleeved on the upper end of the outer side of the rotating rod being meshed with the teeth of the worm, and a handle being fixedly arranged on the right side of the worm.

[0006] Furthermore, a sliding plate is provided on the fixed sleeve at the lower end of the outer portion of the support sleeve, and a guide groove integrally provided on the left side of the inner portion of the reinforcing plate is slidably connected to the sliding plate.

[0007] Furthermore, the number of the legs is three, and the angle between each pair of legs is 120 degrees, and the bottom surface of the reinforcing plate and the bottom surface of the legs are designed to be in the same plane.

[0008] Furthermore, the cross section of the reinforcing plate is T-shaped, and a plurality of sockets are integrally provided on the right side inside the connecting plate.

[0009] Furthermore, the insertion hole is designed as a through hole, and the center of a circle of a plurality of the insertion holes in an annular direction is concentric with the center of a circle of the worm.

[0010] Furthermore, a pin is threadedly passed through the middle end of the right side of the handle, and the pin and the socket can be plug-in-type for assembly and disassembly.

[0011] Furthermore, the connecting plate and the mounting plate are in a vertical design state, and the top surface of the connecting plate is fixedly connected to the bottom surface of the mounting plate.

[0012] Furthermore, an avoidance hole is integrally provided on the right side of the inside of the skateboard. The avoidance hole is a through hole. The diameter of the avoidance hole is larger than the diameter of the rotating rod, and the avoidance hole and the rotating rod are in a concentric design.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model adopts a purely mechanical structure design. The staff only needs to manually rotate the driving component to enable the support sleeve to drive the seat ring volute tensioning screw to lift in the longitudinal direction. The operation method saves time and effort, reduces the difficulty and intensity of the staff's work, ensures the efficiency of lifting the volute tensioning screw, and at the same time, reduces the cost of subsequent production of the device.

[0015] 2. The utility model can lock the state of the seat ring volute tensioning screw after it is lifted through the design of the locking function, so as to prevent the driving component from being accidentally touched by the staff and causing the lifted seat ring volute tensioning screw to deviate. It can be seen that by using the device in this application, the stability of the seat ring volute tensioning screw after it is lifted is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A front perspective view of a turbine seat ring volute tightening screw support device according to the utility model;

[0018] Figure 2 A three-dimensional diagram of the internal structure of a turbine seat ring volute tightening screw support device according to the utility model;

[0019] Figure 3 A bottom-up perspective view of the mounting plate, legs, rotating sleeve, supporting sleeve and driven gear;

[0020] Figure 4 A three-dimensional diagram of the reinforcing plate, guide groove, slide plate and avoidance hole;

[0021] Figure 5 It is a three-dimensional diagram of a connecting plate, a worm, a worm wheel, a rotating rod and a driving gear.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1-mounting plate, 2-leg, 3-swivel sleeve, 4-support sleeve, 5-drive assembly, 501-reinforcement plate, 502-rotating rod, 503-driving gear, 504-driven gear, 505-connecting plate, 506-worm, 507-worm wheel, 508-handle, 6-slide plate, 7-guide groove, 8-jack, 9-pin, 10-avoidance hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the device includes a mounting plate 1, a support leg 2 and a rotating sleeve 3, the support leg 2 is fixedly arranged on the outer side of the bottom of the mounting plate 1, the rotating sleeve 3 rotates and passes through the top of the mounting plate 1, the internal thread of the rotating sleeve 3 is provided with a support sleeve 4, and a driving assembly 5 is arranged on the right side of the bottom of the mounting plate 1, the driving assembly 5 includes a reinforcing plate 501 fixedly arranged on the right side of the bottom of the mounting plate 1, a rotating rod 502 is connected to the right side of the bottom of the mounting plate 1, and the bottom of the rotating rod 502 is connected to the reinforcing plate 501 by a transfer, and the driving gear 503 fixedly sleeved on the upper end of the outer side of the rotating rod 502 is meshed with the driven gear 504 fixedly sleeved on the lower end of the outer side of the rotating sleeve 3, a connecting plate 505 is fixedly arranged on the right side of the top of the reinforcing plate 501, a worm 506 is rotatably penetrated on the upper end of the right side of the connecting plate 505, and the worm 506 passes through the reinforcing plate 501, a worm wheel 507 fixedly sleeved on the upper end of the outer side of the rotating rod 502 is meshed with the gears of the worm 506, and a handle 508 is fixedly arranged on the right side of the worm 506.

[0027] The fixed sleeve at the lower end of the outer support sleeve 4 is provided with a slide plate 6, and the guide groove 7 integrally provided on the left side of the inner side of the reinforcement plate 501 is connected with the slide plate 6 in a sliding manner. There are three legs 2, and the angle between the legs 2 is 120 degrees. The bottom surface of the reinforcement plate 501 and the bottom surface of the legs 2 are designed to be in the same plane. The staff first inserts the seat ring volute tightening screw from the rotating sleeve 3 into the support sleeve 4, and then rotates the handle 508 forward, so that the handle 508 drives the worm 506 to control the worm wheel 507 to link the rotating rod 502 and the driving gear 503 to rotate. At this time, the driving gear 503 drives the driven gear 504 to link the rotating sleeve 3 to rotate. Through the effect of the threaded transmission of the rotating sleeve 3 and the support sleeve 4, the support sleeve 4 drives the seat ring volute tightening screw together with the slide plate 6 to move upward along the direction of the guide groove 7, so that the seat ring volute tightening screw is in a supporting and lifting process.

[0028] Example 2

[0029] like Figure 1 , Figure 2 , Figure 4As shown, the cross-section of the reinforcing plate 501 is T-shaped, and a plurality of sockets 8 are integrally provided on the right side of the connecting plate 505. The sockets 8 are through-holes, and the center of the circle of the plurality of sockets 8 is in a circular direction and is concentric with the center of the circle of the worm 506. A latch 9 is threaded through the middle end of the right side of the handle 508, and the latch 9 and the socket 8 can be disassembled and assembled by plugging. The connecting plate 505 and the mounting plate 1 are in a vertical design state, and the top surface of the connecting plate 505 is fixedly connected to the bottom surface of the mounting plate 1. An avoidance hole 10 is integrally provided on the right side of the sliding plate 6, and the avoidance hole 10 is a through-hole. The diameter of the avoidance hole 10 is larger than the diameter of the rotating rod 502, and the avoidance hole 10 and the rotating rod 502 are concentric.

[0030] According to the operation method in Example 1, when the lifted state of the seat ring volute tensioning screw meets the needs of the staff, the staff first screws the pin 9 into the currently corresponding socket 8 to lock the height of the seat ring volute tensioning screw after it is lifted, to prevent the handle 508 from being accidentally touched and causing the seat ring volute tensioning screw to move after the height has been adjusted.

Claims

1. A turbine seat ring volute tensioning screw support device, comprising a mounting plate (1), a support leg (2) and a rotating sleeve (3), characterized in that: The support leg (2) is fixedly mounted on the outer side of the bottom of the mounting plate (1); the rotating sleeve (3) rotates and passes through the top of the mounting plate (1); the rotating sleeve (3) is provided with a support sleeve (4) in the internal thread; a driving assembly (5) is provided on the right side of the bottom of the mounting plate (1); the driving assembly (5) comprises a reinforcing plate (501) fixedly mounted on the right side of the bottom of the mounting plate (1); a rotating rod (502) is connected to the right side of the bottom of the mounting plate (1); the bottom of the rotating rod (502) is connected to the reinforcing plate (501); the outer side of the rotating rod (502) is A driving gear (503) fixedly sleeved on the upper end of the rotating sleeve (3) meshes with the gears of a driven gear (504) fixedly sleeved on the lower end of the outer portion of the rotating sleeve (3); a connecting plate (505) is fixedly provided on the right side of the top of the reinforcing plate (501); a worm (506) is rotatably penetrated through the upper end of the right side of the connecting plate (505); and the worm (506) penetrates the reinforcing plate (501); a worm wheel (507) fixedly sleeved on the upper end of the outer portion of the rotating rod (502) meshes with the gears of the worm (506); and a handle (508) is fixedly provided on the right side of the worm (506).

2. According to claim 1, a turbine seat ring volute tensioning screw support device is characterized in that: The fixed sleeve at the lower end of the outer portion of the support sleeve (4) is provided with a slide plate (6), and the guide groove (7) integrally provided on the left side of the inner portion of the reinforcement plate (501) is slidably connected to the slide plate (6).

3. According to claim 1, a turbine seat ring volute tightening screw support device is characterized in that: The number of the supporting legs (2) is three, and the angle between each pair of the supporting legs (2) is 120 degrees. The bottom surface of the reinforcing plate (501) and the bottom surface of the supporting legs (2) are designed to be in the same plane.

4. A turbine seat ring volute tightening screw support device according to claim 1, characterized in that: The reinforcing plate (501) has a T-shaped cross section, and a plurality of sockets (8) are integrally provided on the right side of the interior of the connecting plate (505).

5. A turbine seat ring volute tensioning screw support device according to claim 4, characterized in that: The insertion holes (8) are designed as through holes, and the centers of the circles of the plurality of annular insertion holes (8) are designed to be concentric with the center of the circle of the worm (506).

6. The turbine seat ring volute tensioning screw support device according to claim 1, characterized in that: A bolt (9) is threadedly penetrated through the middle end of the right side of the handle (508), and the bolt (9) and the insertion hole (8) can be plugged in and disassembled.

7. The turbine seat ring volute tensioning screw support device according to claim 1, characterized in that: The connecting plate (505) and the mounting plate (1) are in a vertically designed state, and the top surface of the connecting plate (505) is fixedly connected to the bottom surface of the mounting plate (1).

8. The water turbine seat ring volute tensioning screw support device according to claim 2, characterized in that: An avoidance hole (10) is integrally provided on the right side of the inside of the slide plate (6); the avoidance hole (10) is a through hole; the diameter of the avoidance hole (10) is larger than the diameter of the rotating rod (502); and the avoidance hole (10) and the rotating rod (502) are in a concentric design.

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