CN215595779U

CN215595779U - Connecting shaft bolt and nut structure of water turbine

Info

Publication number: CN215595779U
Application number: CN202121712348.5U
Authority: CN
Inventors: 张志斌; 肖兰芬; 万军; 李旭光
Original assignee: Tianjin Yulant Hydropower Equipment Manufacturing Co ltd
Current assignee: Tianjin Yulant Hydropower Equipment Manufacturing Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-21
Anticipated expiration: 2031-07-27

Abstract

The utility model belongs to the technical field of water turbines, and particularly relates to a water turbine connecting shaft bolt nut structure which comprises a water inlet pipe, wherein a conical connecting pipe is fixedly communicated with the surface of one end of the water inlet pipe, and a tail water pipe is fixedly communicated with the surface of one end of the conical connecting pipe. This hydraulic turbine is axle bolt nut structure even, inner wall through setting up the inlet tube is provided with protector, and protector is including the installation piece, the lower surface of installation piece and the inner wall fixed connection of inlet tube, it protects bolt and nut to have reached, prevent to expose the effect that not hard up and fatigue damage appear outside, it mostly all installs at the main shaft flange end to have solved current hydraulic turbine axle bolt even, because bolt and nut are bellied part one by one, can produce great air current under high-speed rotation, long-time lasting easily leads to the bolt and nut to appear not hard up and fatigue damage, in case appear not hard up, easily cause the problem that hydraulic turbine during operation sent the abnormal sound and inside part damage even.

Description

Connecting shaft bolt and nut structure of water turbine

Technical Field

The utility model relates to the technical field of water turbines, in particular to a connecting shaft bolt and nut structure of a water turbine.

Background

The water turbine is a power machine which converts the energy of water flow into rotary mechanical energy, belongs to a turbine machine in fluid machinery, and as early as 100 years before the first yuan, the Chinese has a rudimental water turbine for lifting irrigation and driving grain processing equipment.

The main shaft flange end is all installed to current hydraulic turbine even axle bolt most, because bolt and nut are bellied part one by one, can produce great air current under high-speed rotation, and long-time lasting easily leads to bolt and nut to appear becoming flexible and fatigue damage, in case appear becoming flexible, easily causes the hydraulic turbine during operation to send the problem that abnormal sound or even internals damaged.

SUMMERY OF THE UTILITY MODEL

Based on the technical problems that most of existing water turbine connecting shaft bolts are installed at a main shaft flange end, due to the fact that bolts and nuts are protruding parts, large air flow can be generated under high-speed rotation, the bolts and the nuts are prone to loosening and fatigue damage after long-time continuous operation, and once loosening occurs, abnormal sound is generated when a water turbine works, and even internal parts are prone to being damaged.

The utility model provides a water turbine connecting shaft bolt nut structure which comprises a water inlet pipe, wherein a conical connecting pipe is fixedly communicated with the surface of one end of the water inlet pipe, a tail water pipe is fixedly communicated with the surface of one end of the conical connecting pipe, a fan-shaped fixed block is fixedly sleeved on the inner wall of the tail water pipe, and a sleeve is fixedly sleeved on the inner wall of the fan-shaped fixed block;

the inner wall of inlet tube is provided with protector, and protector including the installation piece, the lower surface of installation piece with the inner wall fixed connection of inlet tube.

Preferably, the inner wall of the sleeve is movably sleeved with a driving shaft, the outer surface of one end of the driving shaft is fixedly sleeved with a rotating wheel, and the surface of the other end of the driving shaft penetrates through and extends into the mounting block;

through above-mentioned technical scheme, the effect that carries out the pressure boost when cone connecting pipe plays and makes the rivers flow in the draft tube, and fan-shaped fixed block plays and fixes and support the effect to the sleeve.

Preferably, the surface of the other end of the driving shaft is fixedly connected with a first flange, the front side of the first flange is provided with a cross clamping groove, the inner wall of the cross clamping groove is movably clamped with a cross clamping block, and the front side of the cross clamping block is fixedly connected with a second flange;

through above-mentioned technical scheme, the cross draw-in groove uses with the cooperation of cross fixture block, and better drive second flange rotates when playing to make first flange rotate, reduces the pressure of bolt, improves bolt life's effect.

Preferably, the back surface of the second flange is in sealing fit with the front surface of the first flange, the back surface of the first flange is provided with placing grooves distributed in an annular array, the inner walls of the placing grooves are movably sleeved with inner hexagonal bolts, and the front surface of the second flange is provided with hexagonal clamping grooves distributed in an annular array;

through above-mentioned technical scheme, the standing groove plays and protects hexagon socket head cap screw, prevents that the long-term loose effect of appearing in contact with the air flow when hexagon socket head cap screw is rotatory.

Preferably, hexagonal nuts are movably clamped on the inner walls of the hexagonal clamping grooves, one end surfaces of the hexagonal nuts penetrate through and extend to the inner wall of the placing groove, and internal thread holes are formed in one end surfaces of the hexagonal nuts;

through above-mentioned technical scheme, the hexagonal draw-in groove plays and protects hexagon nut, prevents that the long-term not hard up effect of appearing in contact with the air flow when hexagon nut is rotatory.

Preferably, the inner walls of the plurality of internal threaded holes are in threaded connection with the outer surface of one end of the hexagon socket head cap screw, a generator is fixedly mounted on the inner bottom wall of the mounting block, a driven shaft is arranged on the back of the generator, and one end surface of the driven shaft is fixedly connected with the front surface of the second flange;

through the technical scheme, the mechanical energy generated when the driven shaft rotates is converted into electric energy through the generator.

The beneficial effects of the utility model are as follows:

inner wall through setting up the inlet tube is provided with protector, and protector is including the installation piece, the lower surface of installation piece and the inner wall fixed connection of inlet tube, it protects bolt and nut to have reached, prevent to expose the effect that appears becoming flexible and fatigue damage outside, it mostly all installs at the main shaft flange end to have solved current hydraulic turbine even axle bolt, because bolt and nut are bellied part one by one, can produce great air flow under high-speed rotation, long-time lasting easily leads to bolt and nut to appear becoming flexible and fatigue damage, in case appear becoming flexible, easily cause the problem that hydraulic turbine during operation sent the abnormal sound and even the internals damage.

Drawings

FIG. 1 is a schematic view of a water turbine coupling bolt and nut structure;

FIG. 2 is a perspective view of a first flange structure of a water turbine connecting shaft bolt nut structure;

FIG. 3 is an exploded view of a water turbine coupling bolt and nut arrangement;

fig. 4 is an enlarged view of a structure at a in fig. 3 of a water turbine connecting shaft bolt nut structure.

In the figure: 1. a water inlet pipe; 2. a tapered connecting pipe; 3. a draft tube; 4. a fan-shaped fixed block; 5. a sleeve; 6. mounting blocks; 61. a drive shaft; 62. a rotating wheel; 63. a first flange; 64. a cross clamping groove; 65. a cross-shaped fixture block; 66. a second flange; 67. a placement groove; 68. a hexagon socket head cap screw; 69. a hexagonal clamping groove; 610. a hexagonal nut; 611. an internally threaded bore; 612. a generator; 613. a driven shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a water turbine connecting shaft bolt nut structure comprises a water inlet pipe 1, wherein a conical connecting pipe 2 is fixedly communicated with the surface of one end of the water inlet pipe 1, a tail water pipe 3 is fixedly communicated with the surface of one end of the conical connecting pipe 2, a fan-shaped fixing block 4 is fixedly sleeved on the inner wall of the tail water pipe 3, and a sleeve 5 is fixedly sleeved on the inner wall of the fan-shaped fixing block 4;

the inner wall of inlet tube 1 is provided with protector, and protector is including installation piece 6, and the lower surface of installation piece 6 and the inner wall fixed connection of inlet tube 1.

Further, the driving shaft 61 is movably sleeved on the inner wall of the sleeve 5, the rotating wheel 62 is fixedly sleeved on the outer surface of one end of the driving shaft 61, the other end surface of the driving shaft 61 penetrates through and extends to the inside of the installation block 6, the conical connection pipe 2 plays a role in pressurizing when water flows into the draft tube 3, and the fan-shaped fixing block 4 plays a role in fixing and supporting the sleeve 5.

Further, the other end fixed surface of driving shaft 61 is connected with first flange 63, cross draw-in groove 64 has been seted up in the front of first flange 63, the inner wall activity joint of cross draw-in groove 64 has cross fixture block 65, the positive fixedly connected with second flange 66 of cross fixture block 65, cross draw-in groove 64 uses with the cooperation of cross fixture block 65, plays better drive second flange 66 when making first flange 63 rotate and rotates, reduces the pressure of bolt, improves bolt life's effect.

Further, the back of second flange 66 and the sealed laminating in front of first flange 63, the standing groove 67 that is the ring array and distributes is seted up to the back of first flange 63, hexagon socket head cap screw 68 has been cup jointed in the equal activity of the inner wall of a plurality of standing grooves 67, hexagon socket head cap screw 69 that is the ring array and distributes is seted up in the front of second flange 66, standing groove 67 plays and protects hexagon socket head cap screw 68, the effect that becomes flexible appears with the air flow contact for a long time when preventing that hexagon socket head cap screw 68 from rotating.

Further, the equal activity joint of inner wall of a plurality of hexagonal draw-in grooves 69 has hexagon nut 610, and the one end surface of a plurality of hexagon nuts 610 all runs through and extends to the 67 inner wall of standing groove, and internal thread hole 611 has all been seted up on the one end surface of a plurality of hexagon nuts 610, and hexagonal draw-in groove 69 plays and protects hexagon nut 610, prevents that it is not hard up to appear with the air flow contact for a long time when hexagon nut 610 is rotatory.

Further, the inner walls of the plurality of female screw holes 611 are all in threaded connection with the outer surface of one end of the hexagon socket head cap screw 68, the generator 612 is fixedly installed on the inner bottom wall of the installation block 6, the driven shaft 613 is arranged on the back surface of the generator 612, one end surface of the driven shaft 613 is fixedly connected with the front surface of the second flange 66, and mechanical energy generated when the driven shaft 613 rotates is converted into electric energy through the generator 612.

Inner wall through setting up inlet tube 1 is provided with protector, and protector is including installation piece 6, the lower surface of installation piece 6 and inlet tube 1's inner wall fixed connection, it protects bolt and nut to have reached, prevent to expose the effect that appears not hard up and fatigue damage outside, it installs at the main shaft flange end mostly to have solved current hydraulic turbine even axle bolt, because bolt and nut are bellied part one by one, can produce great air current under high-speed rotation, long-time lasting easily leads to bolt and nut to appear not hard up and fatigue damage, in case it is not hard up to appear, easily cause the problem that hydraulic turbine during operation sent abnormal sound or even internals and damaged.

The working principle is as follows: an operator firstly clamps and attaches the cross clamping groove 64 on the front surface of the first flange 63 and the cross clamping block 65 on the back surface of the second flange 66, inserting a plurality of hexagon nuts 610 into the hexagon clamping groove 69, screwing a plurality of inner hexagon bolts 68 into the inner thread holes 611 through the placing groove 67 by using a hexagon wrench, screwing until the inner hexagon bolts are fastened, wherein the outer surface of the inner hexagon bolts 68 is in contact with the inner wall of the placing groove 67 in a fitting manner, so that air is prevented from flowing and contacting for a long time, connecting the water inlet pipe 1 with the water outlet, allowing water to enter the tapered connecting pipe 2 through the water inlet pipe 1, and then flowing into the tail water pipe 3 from the tapered connecting pipe 2, the runner 62 is rotated by the pressure of the water flow, the driving shaft 61 is rotated by the runner 62, the driving shaft 61 rotates the driven shaft 613 by the second flange 66 connected to the first flange 63, and the power generated by the rotation of the driven shaft 613 is generated by the generator 612.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a hydraulic turbine shaft connecting bolt nut structure, includes inlet tube (1), its characterized in that: a conical connecting pipe (2) is fixedly communicated with the surface of one end of the water inlet pipe (1), a tail water pipe (3) is fixedly communicated with the surface of one end of the conical connecting pipe (2), a fan-shaped fixing block (4) is fixedly sleeved on the inner wall of the tail water pipe (3), and a sleeve (5) is fixedly sleeved on the inner wall of the fan-shaped fixing block (4);

the inner wall of inlet tube (1) is provided with protector, and protector including installation piece (6), the lower surface of installation piece (6) with the inner wall fixed connection of inlet tube (1).

2. The water turbine connecting shaft bolt nut structure according to claim 1, characterized in that: the inner wall activity of sleeve (5) has cup jointed driving shaft (61), the fixed runner (62) that has cup jointed of one end surface of driving shaft (61), the other end surface of driving shaft (61) runs through and extends to inside installation piece (6).

3. The water turbine connecting shaft bolt nut structure according to claim 2, characterized in that: the other end fixed surface of driving shaft (61) is connected with first flange (63), cross draw-in groove (64) have been seted up in the front of first flange (63), the inner wall activity joint of cross draw-in groove (64) has cross fixture block (65), the front fixedly connected with second flange (66) of cross fixture block (65).

4. The water turbine connecting shaft bolt nut structure according to claim 3, characterized in that: the back of second flange (66) with the sealed laminating in front of first flange (63), standing groove (67) that are the annular array and distribute are seted up to the back of first flange (63), and is a plurality of hexagon socket head cap screw (68) have all been cup jointed in the activity of the inner wall of standing groove (67), hexagonal draw-in groove (69) that are the annular array and distribute are seted up to the front of second flange (66).

5. The water turbine connecting shaft bolt nut structure according to claim 4, characterized in that: it is a plurality of the equal activity joint of inner wall of hexagonal draw-in groove (69) has hexagon nut (610), and is a plurality of the one end surface of hexagon nut (610) all runs through and extends to standing groove (67) inner wall, and is a plurality of internal thread hole (611) has all been seted up to the one end surface of hexagon nut (610).

6. The water turbine connecting shaft bolt nut structure according to claim 5, characterized in that: the inner walls of the multiple internal thread holes (611) are in threaded connection with the outer surface of one end of the inner hexagonal bolt (68), a generator (612) is fixedly installed on the inner bottom wall of the installation block (6), a driven shaft (613) is arranged on the back face of the generator (612), and one end surface of the driven shaft (613) is fixedly connected with the front face of the second flange (66).