A water turbine generator anti-lifting device and method

Abstract

The application relates to the technical field of water-turbine generators, in particular to a water-turbine-generator anti-lifting device, which comprises a base plate, a turbine shell is fixedly connected to the upper end surface of the base plate, and a generator is fixedly connected to the upper end surface of the base plate. The water-turbine-generator anti-lifting device solves the problem that the existing water-turbine-generator anti-lifting device usually adopts a gear speed reduction mechanism to prevent the lifting phenomenon of the paddle and the bearing when the paddle and the bearing stop rotating, the gear surface is abraded and the gear slips under the condition of long-term high-speed rotation and oil shortage, the bearing and the paddle cannot realize speed reduction, the water-turbine generator is lifted, the power control speed reduction mechanism operation increases the input cost, and the vacuum breaking valve is used to release the negative pressure to prevent lifting, the internal parts are rusted due to long-term use and contact with water flow, the valve is not flexible, the valve needs to be regularly replaced, and the negative pressure cannot be released, and the lifting problem occurs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water turbine generator, in particular to a water turbine generator anti-lifting device and method. BACKGROUND

[0002] The existing water turbine generator anti-lifting device usually adopts a gear speed reduction mechanism to prevent the lifting phenomenon of the paddle and the bearing when stopping rotating, the gear will cause the outer surface of the gear to wear and slip under the condition of long-term high-speed operation and lack of oil, so that the bearing and the paddle cannot realize speed reduction and also cause the water turbine generator to lift, and the operation of the power control speed reduction mechanism also increases the investment cost, and the vacuum breaking valve is used to release the negative pressure to prevent lifting, because the internal parts are used for a long time and contact the water flow, rust will occur to cause the valve to be not flexible, not only the valve needs to be replaced regularly, but also the negative pressure cannot be released to cause lifting. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the defects of the prior art, the present application provides a water turbine generator anti-lifting device, which solves the problems that the existing water turbine generator anti-lifting device usually adopts a gear speed reduction mechanism to prevent the lifting phenomenon of the paddle and the bearing when stopping rotating, the gear will cause the outer surface of the gear to wear and slip under the condition of long-term high-speed operation and lack of oil, so that the bearing and the paddle cannot realize speed reduction and also cause the water turbine generator to lift, and the operation of the power control speed reduction mechanism also increases the investment cost, and the vacuum breaking valve is used to release the negative pressure to prevent lifting, because the internal parts are used for a long time and contact the water flow, rust will occur to cause the valve to be not flexible, not only the valve needs to be replaced regularly, but also the negative pressure cannot be released to cause lifting.

[0005] (II) Technical solutions

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A water turbine generator anti-lifting device, comprising a base plate, the upper end surface of the base plate is fixedly connected with a turbine shell, the upper end surface of the base plate is fixedly connected with a generator, the inner cavity of the turbine shell is rotatably connected with a bearing, the outer surface of the turbine shell is communicated with a water inlet pipe, the outer surface of the bearing is uniformly fixedly connected with a paddle, the upper end surface of the base plate is fixedly connected with a support plate, the bearing and the support plate are rotatably connected, the end of the bearing away from the turbine shell is fixedly connected with the output shaft of the generator, the inner cavity of the turbine shell is provided with an automatic friction resistance increasing mechanism, the outer surface of the turbine shell near the upper portion is provided with a vacuum breaking valve mechanism, the inner cavity wall of the water inlet pipe is fixedly connected with a conical elastic sleeve, the inner cavity wall of the water inlet pipe is fixedly connected with not less than three support spring rods, the end of the three support spring rods away from the inner wall of the water inlet pipe is fixedly connected with the outer surface of the conical elastic sleeve;

[0007] The automatic friction resistance increasing mechanism comprises a circular ring, one side of the turbine shell near the generator is rotatably connected with a circular ring, one side of the circular ring is uniformly provided with not less than four arc-shaped grooves, the grooves are slidably connected with slide shafts, the ends of the slide shafts away from the arc-shaped grooves are fixedly connected with supports, the ends of the supports away from the slide shafts are fixedly connected with vertical plates, the inner side walls of the vertical plates are uniformly fixedly connected with spring telescopic rods, and the ends of the spring telescopic rods near the bearing are fixedly connected with arc-shaped clamping pads.

[0008] Preferably, one side of the turbine shell near the circular ring is uniformly fixedly connected with not less than four sliding frames, the inner walls of the sliding frames are slidably connected with slide rods, the ends of the slide rods near the circular ring are fixedly connected with the outer walls of the supports, and the spring telescopic rods and the arc-shaped clamping pads are distributed on the inner walls of the vertical plates in a step-decreasing manner.

[0009] Preferably, the outer surface of the circular ring is fixedly connected with a connecting rod, the upper end surface of the slide column is fixedly connected with an L-shaped rod, and one side of the L-shaped rod near the connecting rod is slidably connected with a sliding block through a sliding groove.

[0010] Preferably, the end of the connecting rod near the L-shaped rod is rotatably connected with the sliding block, the outer wall of the slide column is sleeved with a limiting spring, one end of the limiting spring is fixedly connected with the inner wall of the water inlet pipe, and the other end of the limiting spring is fixedly connected with the outer wall of the slide column.

[0011] Preferably, the vacuum breaking valve mechanism comprises a mounting pipe, the upper end surface of the base plate is communicated with a mounting pipe, and the outer walls of the mounting pipe are uniformly provided with air outlet holes.

[0012] Preferably, the inner cavity wall of the mounting pipe is fixedly connected with a conical sleeve, the inner cavity wall of the mounting pipe is fixedly connected with mounting blocks in symmetry, the upper end surface of each mounting block is fixedly connected with a spring telescopic short rod, and the upper end of the spring telescopic short rod is fixedly connected with a conical plug.

[0013] Preferably, the upper end surface of the conical plug is fixedly connected with a U-shaped column, the U-shaped column is in penetrating and sliding connection with the upper portion of the mounting pipe, and the end of the U-shaped column away from the conical plug is fixedly connected with the upper portion of the L-shaped rod.

[0014] Preferably, the water-turbine-generator anti-lifting device is used for a water-turbine-generator anti-lifting method, which comprises the following steps.

[0015] Step one: water inlet anti-lifting;

[0016] a, the water inlet pipe is connected with the water inlet pipe through the water inlet pipe, and whether the connection is firm is detected;

[0017] b, the valve is opened to pass water, the water flows into the conical elastic sleeve through the water pipe, and the water flow velocity is slowed down through the narrow inner wall of the conical elastic sleeve, and the water turbine is started slowly;

[0018] c, when the pressure value in the water inlet pipe connected at one end reaches 3MPa to 6MPa, the conical elastic sleeve changes from narrow to wide, so that the water flow slowly enters the driving water turbine paddle to rotate;

[0019] Step two: paddle closing anti-lifting;

[0020] a, the paddle rotates to make the bearing generator rotor rotate and cut the generator stator magnetic coil, and high-voltage electricity is generated in the generator coil by using the principle of electromagnetic induction;

[0021] b, when the valve is closed without water, the water turbine generates a water pump lifting force when it is unloaded, and the water pump lifting force forms a reverse water thrust;

[0022] c, by setting an automatic friction increasing resistance mechanism outside the bearing, the arc-shaped clamping pad can be close to the outer wall of the bearing to increase the friction resistance;

[0023] Step three: vacuum destruction valve anti-lifting;

[0024] a, the paddle is closed in an emergency, which destroys the continuity of the water flow, and a serious vacuum is generated in the water turbine runner chamber and the draft tube, at this time, the vacuum increases continuously along with the water flow direction of the runner chamber downstream after the paddle is closed, and the reverse water hammer phenomenon is caused;

[0025] b, a vacuum destruction valve mechanism is installed on the upper portion of the water turbine shell;

[0026] The valve plug in the valve body is pulled by external force to close the seal or open, and the vacuum gas in the water turbine is discharged.

[0027] (III) Beneficial Effects

[0028] The water turbine generator anti-lifting device has the following beneficial effects:

[0029] 1. The water turbine generator anti-lifting device first connects the water inlet pipe to the water source. When the water enters, the impact force of the water will push the conical elastic sleeve to deform elastically, and then expand the gap in the conical elastic sleeve in turn. When the conical elastic sleeve deforms elastically, the support spring rod and the limiting spring on the outer wall will be pushed to move closer to the inner wall of the water inlet pipe and contract. When the limiting spring contracts, it will push the slide column to slide upward. The support spring rod and the limiting spring can provide resistance to the conical elastic sleeve, thereby slowing down the speed of the water flow when it enters, effectively preventing the water flow from entering too quickly and impacting the blades and the water turbine shell, causing the machine to tilt and lift. The support spring rod and the limiting spring can help the conical elastic sleeve to deform elastically again to the initial state when the water flow does not enter, preventing the conical elastic sleeve from being unable to recover due to long-term impact, so that the water flow impact force can be slowed down again during the next water passage.

[0030] 2. When the conical elastic sleeve no longer has water flow passing through it, the slide column will descend, pulling the L-shaped rod to descend and pressing the connecting rod through the sliding block to deflect downward. When the connecting rod deflects, it will drive the circular ring to deflect, causing the arc-shaped groove to squeeze the slide shaft and the support towards the outer wall of the bearing, and then pulling the slide rod on the outer wall of the support to slide in the sliding frame. When the support approaches, it will simultaneously drive the arc-shaped clamping pad on the inner wall of the vertical plate to approach and fit the outer wall of the bearing. At this time, the bearing is still rapidly rotating under the action of inertia. With the continuous deflection of the circular ring, the arc-shaped groove will continuously squeeze the slide shaft, allowing the vertical plate to continuously approach the bearing, which will cause the arc-shaped clamping pads distributed in a stepped manner to sequentially fit and compress the spring extension rod on the outer wall of the bearing, thereby slowly increasing the frictional resistance to the outer wall of the bearing. Only when the arc-shaped clamping pads are all fitted on the outer wall of the bearing will the bearing stop rotating with the blades, allowing the bearing and the blades to be stopped in a segmented and slow manner, which changes the traditional phenomenon of long-term wear of the gear on the water turbine generator, causing the gear to slip on the outer wall and fail to slow down. It also ensures that the bearing and the blades will not cause the machine to lift when they are rapidly stopped.

[0031] 3. The anti-lift device for the hydro-generator has the following mechanism: When water enters the turbine, the sliding column rises and pushes the L-shaped rod upward, which in turn pushes the U-shaped column upward and pulls the conical plug upward to fit against the inner wall of the conical sleeve. This allows the installation pipe to close and prevent water from overflowing. When no water enters, the descent of the sliding column pulls the L-shaped rod and the U-shaped column downward simultaneously. At this time, the conical plug moves downward and compresses the spring telescopic rod, allowing the negative pressure generated in the turbine casing to be discharged through the air outlet via the installation pipe. This breaks the vacuum in the turbine casing and pipelines, which can protect the pipelines and turbine casing from being sucked and deformed, and can also prevent backwater hammer from the turbine casing, which could lead to turbine lifting.

[0032] 4. The anti-lift device for the hydro-generator uses an L-shaped rod and a U-shaped column fixed at one end. It can seal or open the conical plug and conical sleeve by external force while the sliding column moves up and down. This avoids the need for electric drive to open the vacuum breaker valve, saving power resources. It also prevents the spring in the vacuum breaker valve from rusting due to long-term contact with water, which would prevent it from compressing or stretching and thus prevent the vacuum in the turbine from being discharged. This allows the vacuum breaker valve to maintain its flexibility and reduces the frequency and cost of replacing the vacuum breaker valve. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a schematic diagram of the overall installation structure of the present invention from the rear view;

[0035] Figure 3 This is a schematic diagram of a partial cross-sectional view of the water inlet pipe of the present invention;

[0036] Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle;

[0037] Figure 5 This is a schematic diagram of the sliding frame and slide bar assembly structure of the present invention;

[0038] Figure 6 For the present invention Figure 5 Enlarged structural diagram of region B in the middle;

[0039] Figure 7 This is a schematic diagram of the sliding block and connecting rod installation structure of the present invention;

[0040] Figure 8 For the present invention Figure 7 Enlarged structural diagram of region C in the middle;

[0041] Figure 9 This is a schematic diagram of the bearing and blade mounting structure of the present invention;

[0042] Figure 10For the present invention Figure 9 Schematic diagram of D area amplification structure in the present invention

[0043] Figure 11 Schematic diagram of the method steps of the present invention

[0044] In the figure: 1, base plate; 2, turbine shell; 3, generator; 4, bearing; 5, water inlet pipe; 6, paddle; 7, automatic friction resistance increasing mechanism; 71, circular ring; 72, arc-shaped groove; 73, sliding shaft; 74, support; 75, L-shaped rod; 76, vertical plate; 77, spring telescopic rod; 78, arc-shaped clamping pad; 79, sliding frame; 710, sliding rod; 711, connecting rod; 712, sliding block;

[0045] 8, vacuum destruction valve mechanism; 81, mounting pipe; 82, air outlet hole; 83, conical sleeve; 84, mounting block; 85, spring telescopic short rod; 86, conical plug; 87, U-shaped column; 9, conical elastic sleeve; 10, support spring rod; 11, sliding column; 12, limit spring; 13, support plate. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] The present application provides a technical solution:

[0048] Embodiment one

[0049] Please refer to Figures 1 to 4 and Figure 9 A water turbine generator anti-lifting device, comprising a base plate 1, the upper end surface of the base plate 1 is fixedly connected with a turbine shell 2, the upper end surface of the base plate 1 is fixedly connected with a generator 3, the turbine shell 2 is rotatably connected with a bearing 4 penetrating the inner cavity of the turbine shell 2, the outer surface of the turbine shell 2 is communicated with a water inlet pipe 5, the outer surface of the bearing 4 is uniformly fixedly connected with a paddle 6, the upper end surface of the base plate 1 is fixedly connected with a support plate 13, the bearing 4 and the support plate 13 are rotatably connected, the end of the bearing 4 away from the turbine shell 2 is fixedly connected with the output shaft of the generator 3, the inner cavity of the turbine shell 2 is provided with an automatic friction resistance increasing mechanism 7, the outer surface of the turbine shell 2 close to the upper part is provided with a vacuum destruction valve mechanism 8, the inner cavity wall of the water inlet pipe 5 is fixedly connected with a conical elastic sleeve 9, the inner cavity wall of the water inlet pipe 5 is fixedly connected with not less than three support spring rods 10, the ends of the three support spring rods 10 away from the inner wall of the water inlet pipe 5 are fixedly connected with the outer surface of the conical elastic sleeve 9.

[0050] Embodiment two

[0051] Please refer to Figure 1 and Figure 2 and Figures 5 to 8 , the automatic friction resistance increasing mechanism 7 comprises a circular ring 71, the circular ring 71 is rotatably connected to one side of the wheel shell 2 close to the generator 3, a plurality of arc-shaped grooves 72 are uniformly arranged on one side of the circular ring 71, a sliding shaft 73 is slidably connected in the arc-shaped groove 72, a support 74 is fixedly connected to one end of the sliding shaft 73 away from the arc-shaped groove 72, a vertical plate 76 is fixedly connected to one end of the support 74 away from the sliding shaft 73, a plurality of spring telescopic rods 77 are fixedly connected to the inner side wall of the vertical plate 76, an arc-shaped clamping pad 78 is fixedly connected to one end of the spring telescopic rod 77 close to the bearing 4, a plurality of sliding frames 79 are fixedly connected to one side of the wheel shell 2 close to the circular ring 71, a sliding rod 710 is slidably connected to the inner wall of the sliding frame 79, and one end of the sliding rod 710 close to the circular ring 71 is fixedly connected to the outer wall of the support 74; the spring telescopic rods 77 and the arc-shaped clamping pads 78 are arranged in a stepped decreasing manner on the inner wall of the vertical plate 76, the sliding rod 710 can limit the support 74 and the sliding shaft 73 to slide under extrusion in the arc-shaped groove 72, and the arc-shaped clamping pads 78 arranged in a stepped decreasing manner can sequentially increase the friction force;

[0052] The outer surface of the circular ring 71 is fixedly connected with a connecting rod 711, the upper end surface of the sliding column 11 is fixedly connected with an L-shaped rod 75, the L-shaped rod 75 is slidably connected with a sliding block 712 through a sliding groove on one side close to the connecting rod 711; when the connecting rod 711 is pulled, the connecting rod 711 and the sliding block 712 connected part will rotate due to the rotation connection between the circular ring 71 and the wheel shell 2, and the connecting rod 711 will pull the sliding block 712 to slide when it deflects around the bearing 4;

[0053] One end of the connecting rod 711 close to the L-shaped rod 75 is rotatably connected with the sliding block 712, the outer wall of the sliding column 11 is sleeved with a limiting spring 12, one end of the limiting spring 12 is fixedly connected with the inner wall of the water inlet pipe 5, and the other end of the limiting spring 12 is fixedly connected with the outer wall of the sliding column 11; the limiting spring 12 can automatically reset and rebound when there is no water flow through the conical elastic sleeve 9, so as to pull the sliding column 11 to slide downward, so that the automatic friction resistance increasing mechanism 7 can work at a limited speed;

[0054] Example three

[0055] Please refer to Figures 1 to 3 Figures 9 to 10 The vacuum breaking valve mechanism 8 comprises a mounting pipe 81, the upper end surface of the base plate 1 is communicated with the mounting pipe 81, a plurality of air outlet holes 82 are uniformly arranged on the outer wall of the mounting pipe 81, and the air outlet holes 82 are arranged on the outer wall of the mounting pipe 81 for the discharge of vacuum gas;

[0056] The inner cavity wall of the installation pipe 81 is fixedly connected with a conical sleeve 83, and the inner cavity wall of the installation pipe 81 is fixedly connected with installation blocks 84 in a symmetrical manner, the upper end surface of each installation block 84 is fixedly connected with a spring telescopic short rod 85, the upper end of the spring telescopic short rod 85 is fixedly connected with a conical plug 86, and the conical plug 86 is used to block the hole of the conical sleeve 83 so that no gas enters when water enters;

[0057] The upper end surface of the conical plug 86 is fixedly connected with a U-shaped column 87, the U-shaped column 87 is in penetrating and sliding connection with the upper portion of the installation pipe 81, and the end of the U-shaped column 87, which is away from the conical plug 86, is fixedly connected with the upper portion of the L-shaped rod 75; the U-shaped column 87 can be used as a driving source to drive the conical plug 86 and the conical sleeve 83 to be separated or sealed by simultaneously moving the L-shaped rod 75 up and down, so as to ensure that the vacuum in the turbine casing 2 can be released in time.

[0058] Embodiment four

[0059] Please refer to Figure 11 A water-turbine-generator anti-lifting device is provided, and a water-turbine-generator anti-lifting method is provided, which comprises the following steps:

[0060] Step one: water inlet anti-lifting;

[0061] a, the water inlet pipe 5 is connected with the water inlet pipe through the water pipe, and whether the connection is firm is detected;

[0062] b, the valve is opened to pass water, the water flows into the conical elastic sleeve 9 through the water pipe, and the water flow rate is slowed down by the narrow inner wall of the conical elastic sleeve 9, and the water turbine is started slowly;

[0063] c, when the pressure value in the water inlet pipe 5 connected at one end reaches 3MPa to 6MPa, the conical elastic sleeve 9 changes from narrow to wide, so that the water flow slowly enters the driving water turbine paddle 6, the elastic sleeve is arranged on the inner wall of the water inlet pipe 5, and the elastic sleeve can be sequentially expanded after the water flow enters, so that the water flow slowly enters to avoid the paddle 6 rotating too fast, and the impact force on the turbine casing can be reduced, thereby avoiding the lifting of the water inlet pipe 5;

[0064] Step two: paddle closing anti-lifting;

[0065] a, the paddle 6 rotates to make the bearing 4 generator 3 rotor rotate and cut the generator 3 stator magnetic coil, and high-voltage electricity is generated in the generator 3 coil by using the principle of electromagnetic induction;

[0066] b, when the valve is closed without water, the water turbine is unloaded, a vacuum appears in the draft tube, a reverse water hammer is formed, a water pump lifting force is generated, and a reverse water thrust is formed;

[0067] c, through the automatic friction increasing resistance mechanism 7 arranged outside the bearing 4, the arc-shaped clamping pad 78 can be close to the outer wall of the bearing 4 to increase the friction resistance, and the stepped clamping mechanism is arranged at the bearing 4 of the water turbine generator 3, so that the friction resistance of the bearing 4 is slowly increased, the bearing 4 and the paddle 6 are stopped in sections, and the lifting of the machine is avoided when the paddle 6 stops rotating;

[0068] Step three: vacuum breaking valve prevents lifting of the machine,

[0069] a, the lifting of the machine is caused by the lifting of the machine.

[0070] b, by installing the vacuum breaking valve mechanism 8 on the upper part of the water turbine shell;

[0071] c, by pulling the valve plug in the valve body by external force to close and seal or open, the vacuum gas in the water turbine can be discharged, the parts in the vacuum breaking valve can be prevented from being rusted by contacting water, and the phenomenon of not being flexible or the lifting of the machine caused by the damage of the vacuum breaking valve and the failure of the negative pressure to be discharged is avoided.

[0072] The following is the whole working process of the above embodiment:

[0073] First, the water inlet pipe 5 is connected to the water source, when the water source enters, the impact force of the water will push the conical elastic sleeve 9 to deform elastically, and then expand the gap in the conical elastic sleeve 9 in turn, and when the conical elastic sleeve 9 deforms elastically, the support spring rod 10 and the limiting spring 12 on the outer wall will be pushed to move close to the inner wall of the water inlet pipe 5 and shrink, and when the limiting spring 12 shrinks, the slide column 11 will be pushed to slide upward, the support spring rod 10 and the limiting spring 12 can provide resistance to the conical elastic sleeve 9, thereby slowing down the speed of the water flow when it enters, which can effectively prevent the water flow from entering too quickly and impacting the paddle 6 and the water turbine shell 2 to cause the machine to lift, and the support spring rod 10 and the limiting spring 12 can help the conical elastic sleeve 9 to deform elastically again to the initial state when the water flow does not enter, so as to prevent the conical elastic sleeve 9 from being unable to recover due to long-term impact, so that the water flow impact force can be slowed down again next time;

[0074] When the conical elastic sleeve 9 no longer has water flowing through, the slide column 11 will be lowered to pull down the L-shaped rod 75 and press the connecting rod 711 through the sliding block 712 to deflect downward, and when the connecting rod 711 deflects, it will drive the circular ring 71 to deflect, and the rotation of the circular ring 71 will cause the arc-shaped groove 72 to press the slide shaft 73 and the support 74 to move closer to the outer wall of the bearing 4, and then pull the slide rod 710 on the outer wall of the support 74 to slide in the sliding frame 79, and when the support 74 moves closer, it will simultaneously drive the arc-shaped clamping pad 78 on the inner wall of the vertical plate 76 to move closer to the outer wall of the bearing 4, at this time the bearing 4 is still rotating rapidly under the action of inertia, and as the circular ring 71 continues to deflect, the arc-shaped groove 72 will continue to press the slide shaft 73, so that the vertical plate 76 can continue to move closer to the bearing 4, and the arc-shaped clamping pad 78 arranged in a stepped manner will be sequentially attached to the outer wall of the bearing 4 and compressed to contract the spring telescopic rod 77, thereby slowly increasing the friction resistance on the outer wall of the bearing 4, until the arc-shaped clamping pad 78 is completely attached and clamped on the outer wall of the bearing 4, so that the bearing 4 will no longer rotate with the paddle 6, and the bearing 4 and the paddle 6 can be stopped rotating in a segmented and slow manner, that is, the phenomenon of long-term wear of the gear on the outer wall of the gear in the traditional gear speed reduction mechanism installed on the hydro-generator 3, which causes the speed reduction to be unsuccessful due to slipping, is changed, and it can also ensure that the bearing 4 and the paddle 6 will not cause the machine to lift when they are rapidly stopped;

[0075] When water enters, the slide column 11 will be lifted to push the L-shaped rod 75 upwards, which will simultaneously push the U-shaped column 87 upwards to pull the conical plug 86 upwards to attach to the inner wall of the conical sleeve 83, thereby allowing the installation pipe 81 to close to prevent water from overflowing, and when there is no water entering, the slide column 11 will be lowered to pull the L-shaped rod 75 and the U-shaped column 87 downwards, which will push the conical plug 86 downwards to compress the spring telescopic short rod 85, so that the negative pressure generated in the turbine housing 2 is discharged from the air outlet hole 82 through the installation pipe 81, thereby destroying the vacuum degree in the turbine housing 2 and the pipeline, which can protect the pipeline and the turbine housing 2 from being deformed by suction, and can also avoid the phenomenon of reverse water hammer causing the machine to lift;

[0076] By fixing one end of the L-shaped rod 75 and the U-shaped column 87, the conical plug 86 and the conical sleeve 83 can be sealed or opened by driving the slide column 11 up and down, which can avoid using electric drive to open the vacuum breaking valve, saving electric power resources, and can also avoid the phenomenon that the spring in the vacuum breaking valve is rusted due to long-term contact with water, which cannot complete compression or stretching, causing the vacuum in the turbine to be unable to be discharged, and can keep the flexibility of the vacuum breaking valve, reducing the number of times and cost of replacing the vacuum breaking valve.

[0077] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic generator anti-lifting device comprising a base plate (1), characterized in that: The upper end surface of the substrate (1) is fixedly connected with a wheel casing (2), the upper end surface of the substrate (1) is fixedly connected with a generator (3), the inner cavity of the wheel casing (2) is rotatably connected with a bearing (4) in penetration, the outer surface of the wheel casing (2) is communicated with a water inlet pipe (5), the outer surface of the bearing (4) is uniformly fixedly connected with a paddle (6), the upper end surface of the substrate (1) is fixedly connected with a support plate (13), the bearing (4) is rotatably connected with the support plate (13), one end of the bearing (4) away from the wheel casing (2) is fixedly connected with an output shaft of the generator (3), the inner cavity of the wheel casing (2) is provided with an automatic friction increasing resistance mechanism (7), the outer surface of the wheel casing (2) near the upper portion is provided with a vacuum breaking valve mechanism (8), the inner cavity wall of the water inlet pipe (5) is fixedly connected with a conical elastic sleeve (9), the inner cavity wall of the water inlet pipe (5) is fixedly connected with not less than three support spring rods (10), one end of the three support spring rods (10) away from the inner wall of the water inlet pipe (5) is fixedly connected with the outer surface of the conical elastic sleeve (9); The automatic friction increasing resistance mechanism (7) comprises a circular ring (71), one side of the wheel casing (2) near the generator (3) is rotatably connected with the circular ring (71), one side of the circular ring (71) is uniformly provided with not less than four arc-shaped grooves (72), the arc-shaped grooves (72) are slidably connected with slide shafts (73), one end of the slide shafts (73) away from the arc-shaped grooves (72) is fixedly connected with supports (74), one end of the supports (74) away from the slide shafts (73) is fixedly connected with vertical plates (76), the inner side walls of the vertical plates (76) are uniformly fixedly connected with spring telescopic rods (77), one end of the spring telescopic rods (77) near the bearing (4) is fixedly connected with arc-shaped clamping pads (78); One side of the wheel casing (2) near the circular ring (71) is uniformly fixedly connected with not less than four sliding frames (79), the inner walls of the sliding frames (79) are slidably connected with slide rods (710), one end of the slide rods (710) near the circular ring (71) is fixedly connected with the outer walls of the supports (74), the spring telescopic rods (77) and the arc-shaped clamping pads (78) are distributed on the inner walls of the vertical plates (76) in a step-decreasing manner; The outer surface of the circular ring (71) is fixedly connected with a connecting rod (711), the upper end surface of a slide column (11) is fixedly connected with an L-shaped rod (75), one side of the L-shaped rod (75) near the connecting rod (711) is slidably connected with a sliding block (712) through a sliding groove; One end of the connecting rod (711) near the L-shaped rod (75) is rotatably connected with the sliding block (712), the outer wall of the slide column (11) is sleeved with a limiting spring (12), one end of the limiting spring (12) is fixedly connected with the inner wall of the water inlet pipe (5), the other end of the limiting spring (12) is fixedly connected with the outer wall of the slide column (11); The vacuum destruction valve mechanism (8) includes a mounting pipe (81), the upper end surface of the substrate (1) is communicated with the mounting pipe (81), and the outer wall of the mounting pipe (81) is uniformly provided with a gas outlet hole (82); The inner cavity wall of the mounting pipe (81) is fixedly connected with a conical sleeve (83), and the inner cavity wall of the mounting pipe (81) is fixedly connected with mounting blocks (84) in a symmetrical manner, the upper end surfaces of the mounting blocks (84) are fixedly connected with spring telescopic short rods (85), and the upper ends of the spring telescopic short rods (85) are fixedly connected with conical plugs (86); The upper end surface of the conical plug (86) is fixedly connected with a U-shaped column (87), the U-shaped column (87) is in penetrating sliding connection with the upper portion of the mounting pipe (81), and one end of the U-shaped column (87) away from the conical plug (86) is fixedly connected with the upper portion of the L-shaped rod (75).

2. A method for preventing the lifting of a hydraulic generator, using a hydraulic generator lifting prevention device as claimed in claim 1, characterized in that: The method comprises the following steps: Step one: water inlet anti-lifting machine; a, connect with the water inlet pipe (5) through the water delivery pipe, and detect whether the connection is firm; b, open the valve to pass water, the water flows into the conical elastic sleeve (9) through the water pipe, and the water flow rate is slowed down by the narrower inner wall of the conical elastic sleeve (9), and the water turbine is started slowly; c, when the pressure value in the water inlet pipe (5) connected at one end reaches 3MPa to 6MPa, the conical elastic sleeve (9) changes from narrow to wide, so that the water flow slowly enters the driving water turbine paddle (6) to rotate; Step two: paddle closing anti-lifting; a, the rotation of the paddle (6) makes the bearing (4) generator (3) rotor rotate and cut the generator (3) stator magnetic coil, and high-voltage electricity is generated in the generator (3) coil by using the principle of electromagnetic induction; b, when the water turbine is unloaded and the tail water pipe is in a vacuum state, the water pump lifting force is generated to form the reverse water thrust; c, by setting the automatic friction resistance increasing mechanism (7) outside the bearing (4), the arc-shaped clamping pad (78) can be close to the outer wall of the bearing (4) for friction braking to increase the resistance; Step three: vacuum destruction valve anti-lifting machine; a, the emergency closing of the paddle (6) destroys the continuity of the water flow, which will cause serious vacuum in the water turbine runner chamber and the tail water pipe, at this time, the vacuum will increase continuously along with the water flow direction of the runner chamber downstream after the paddle (6) is closed, which will cause the reverse water hammer phenomenon; b, the vacuum destruction valve mechanism (8) is installed on the upper portion of the water turbine shell; c, the valve plug in the valve body is pulled by external force to be closed and sealed or opened, so that the vacuum gas in the water turbine is discharged.

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