CN214366517U

CN214366517U - Water distribution device of axial flow water turbine

Info

Publication number: CN214366517U
Application number: CN202120169315.4U
Authority: CN
Inventors: 于江涛; 林军胜; 房洋友; 黄涛; 刘浩; 于游
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-10-08
Anticipated expiration: 2031-01-21

Abstract

The utility model discloses an axial flow turbine water distribution device, including the axial flow turbine, the bottom of the axial flow turbine is equipped with the tail water drain pipe, the inside of the axial flow turbine is equipped with the multistage impeller of hydraulic turbine, the top of the axial flow turbine is equipped with hydraulic turbine water distribution device. This axial-flow turbine water distribution device, through the axial-flow turbine, the tail water drain pipe, the multistage impeller of hydraulic turbine, hydraulic turbine water distribution device, a control assembly, adjustment mechanism, the gate, go up the reservoir, cooperation between blade and the hydraulic turbine main shaft, operating personnel can control quick-witted incasement portion's motor and make bull stick and tooth chain wheel rotate simultaneously, the tooth chain wheel can mesh the transmission to the tooth post during, can make horizontal pole and blade rotate, realize the regulation of angle between the blade, make axial-flow turbine water distribution device's application scope can strengthen, it is applicable in that multiple condition uses required.

Description

Water distribution device of axial flow water turbine

Technical Field

The utility model relates to a hydroelectric generating set energy-saving design technical field specifically is an axial-flow turbine water distribution device.

Background

The hydropower is a clean energy, can regenerate, pollution-free, the running cost is low, it is convenient to carry on the peak regulation of the electric power, help to improve resource utilization rate and economic social comprehensive benefit, under the situation that the traditional energy of the earth is increasingly tense, the world is generally preferred to develop the hydropower, utilize the hydroenergy resource vigorously, the hydraulic turbine is a power machinery which transforms the energy of the waterflow into the rotating machinery, it belongs to the turbine machinery in the fluid machinery, in the hydropower station, the water in the upper reservoir is led to the hydraulic turbine through the leading water pipe, promote the runner rotation of the hydraulic turbine, drive the generator to generate electricity, the water done the function is discharged to the downstream water head through the draft tube, the higher, the larger the flow, the larger the output power of the hydraulic turbine, the hydraulic turbine can be divided into two categories of impulse turbine and reaction turbine according to the working principle, the runner of the impulse turbine is rotated by the impact of the waterflow, the pressure of water flow is unchanged in the working process, and mainly the conversion of kinetic energy is carried out; the runner of the reaction type water turbine rotates under the reaction force of water flow in water, the pressure energy and the kinetic energy of the water flow are changed in the working process, but the conversion of the pressure energy is mainly performed, the mixed flow water turbine is the most widely used water turbine in the world, the applicable water head range of the mixed flow water turbine is very wide, 5-700 meters, but the most adopted water head range is 40-300 meters, the hydroelectric generating set is huge in equipment and complex in structure, water needs to change direction and throttle for many times when entering the water turbine, the water enters a volute to prolong the flowing path, the throttling loss is increased, and the energy waste is caused, so that the axial flow water turbine water distribution device in the prior art can be applied, but certain defects still exist in the actual use process, for example, the blades in the axial flow water turbine water distribution device cannot adjust the angle, and the application range of the axial flow water turbine water distribution device is relatively general, not applicable as required in many situations.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an axial-flow turbine water distribution device to the inside blade of the water distribution device who provides in solving above-mentioned background art can't carry out angle modulation, and axial-flow turbine water distribution device's application scope is comparatively general, is not suitable for the required problem of multiple condition.

In order to achieve the above object, the utility model provides a following technical scheme: an axial flow type water turbine water distribution device comprises an axial flow type water turbine, wherein a tail water drain pipe is arranged at the bottom end of the axial flow type water turbine, a water turbine multi-stage impeller is arranged inside the axial flow type water turbine, a water turbine water distribution device is arranged above the axial flow type water turbine, a control assembly is arranged on the left side of the water turbine water distribution device, a water turbine main shaft is arranged inside the water turbine water distribution device, a plurality of blades are annularly arranged on the outer wall of the water turbine main shaft and are connected with the water turbine main shaft through an adjusting mechanism, a gate is arranged above the water turbine water distribution device, and an upper reservoir is arranged above the gate;

the adjusting mechanism comprises a case, a rotating rod, a tooth disc, tooth columns and a cross rod;

the machine case rigid coupling is at the top center of hydraulic turbine main shaft, the bottom rigid coupling of machine case has the bull stick, the outer wall of bull stick is fixed to be cup jointed tooth dish, the upper surface of tooth dish is annular meshing and is connected with a plurality of tooth posts, the horizontal rigid coupling of inner wall of tooth post has the horizontal pole, the horizontal pole passes through sealed bearing and rotates with the hydraulic turbine main shaft and link to each other, the outside end of horizontal pole is connected with the blade.

Preferably, the tooth columns and the central point of the cross rod are both located on the same horizontal line.

Preferably, the cross bar is connected with the blades through a buffer mechanism;

the buffer mechanism comprises a support rod, a groove block, a sleeve, a groove ring, a sliding block, an inclined rod, a square rod, a housing, a through groove and a hydraulic rod;

the medial extremity center of branch rigid coupling at the blade, the other end of branch articulates there is the groove piece, the other end of groove piece links to each other with the contact surface of horizontal pole is fixed, the fixed cover of outer wall of branch has connect the sleeve, the fixed cover of telescopic outer wall has connect the groove ring, the inboard bottom sliding clamping of outer wall of groove ring has the slider, the bottom of slider articulates there is the down tube, the other end of down tube articulates there is the square pole, the right side of square pole is equipped with the housing, the housing links to each other with the contact surface of hydraulic turbine main shaft is fixed, the square pole runs through the housing through leading to the groove, the right side tip rigid coupling of square pole has the hydraulic stem, the bottom of hydraulic stem links to each other with the contact surface of housing is fixed.

Preferably, the baffle is fixedly sleeved on the outer side of the outer wall of the square rod, and the peripheral end part of the inner side surface of the baffle is fixedly connected with a rubber strip.

Preferably, the groove ring and the sliding block form a sliding limiting structure.

Preferably, the vertical section of the square rod is of a square structure.

Compared with the prior art, the beneficial effects of the utility model are that: this axial flow turbine water distribution device for traditional technique, has following advantage:

through the axial flow type hydraulic turbine, the tail water drain pipe, the multistage impeller of hydraulic turbine, hydraulic turbine water distribution device, control assembly, adjustment mechanism, the gate, go up the reservoir, cooperation between blade and the hydraulic turbine main shaft, operating personnel can control quick-witted incasement portion's motor and make bull stick and tooth chain wheel rotate simultaneously, the tooth chain wheel can mesh the transmission to the tooth post during, can make horizontal pole and blade rotate, realize the regulation of angle between the blade, make the application scope of axial flow type hydraulic turbine water distribution device can strengthen, it is applicable in multiple condition use required.

Through the hydraulic turbine main shaft, the cooperation between blade and the buffer gear, act on the top in-process at the blade when rivers, the great impact force that produces in the twinkling of an eye in the contact, can make branch carry out the inboard rotation of certain degree, the transmission through the down tube during, can produce decurrent effort with the square pole, this in-process hydraulic stem can compress and adsorb the buffering to the effort, make the effort of water impact in the blade top cushion, in order to prevent to produce the hydraulic turbine water distribution device local damage that great effort leads to in the twinkling of an eye because of the blade top, the practicality can be strengthened.

Through the housing, lead to the cooperation between groove and the square pole, the square pole is leading to the inside in-process that slides from top to bottom of groove, and the square pole outer wall is fixed the cover in proper order and is connect the baffle, can shelter from the protection to the outside that leads to the groove, can prevent that external moisture from entering into inside the housing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top sectional view of the water distribution system of the water turbine of FIG. 1;

FIG. 3 is a front sectional view of the water distribution device of the water turbine of FIG. 1;

FIG. 4 is a schematic view of the connection of the main shaft, blades and cross-bar of the turbine of FIG. 2;

fig. 5 is a schematic view of a connection structure of a main shaft, a blade and a buffering mechanism of the water turbine of fig. 3.

In the figure: 1. axial flow turbine, 2, tail water drain pipe, 3, turbine multistage impeller, 4, turbine water distribution device, 5, control assembly, 6, adjustment mechanism, 601, machine case, 602, bull stick, 603, toothed disc, 604, tooth post, 605, horizontal pole, 7, buffer gear, 701, branch, 702, groove piece, 703, sleeve, 704, groove ring, 705, slider, 706, down tube, 707, square pole, 708, housing, 709, logical groove, 710, hydraulic stem, 8, gate, 9, upper reservoir, 10, blade, 11, turbine main shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an axial flow water turbine water distribution device comprises an axial flow water turbine 1, a tail water drain pipe 2 is arranged at the bottom end of the axial flow water turbine 1, a water turbine multistage impeller 3 is arranged inside the axial flow water turbine 1, a water turbine water distribution device 4 is arranged above the axial flow water turbine 1, a control assembly 5 is arranged on the left side of the water turbine water distribution device 4, a water turbine main shaft 11 is arranged inside the water turbine water distribution device 4, a plurality of blades 10 are annularly arranged on the outer wall of the water turbine main shaft 11, the blades 10 are connected with the water turbine main shaft 11 through an adjusting mechanism 6, a gate 8 is arranged above the water turbine water distribution device 4, an upper reservoir 9 is arranged above the gate 8, the adjusting mechanism 6 comprises a case 601, a rotating rod 602, a tooth disc 603, a tooth column 604 and a cross rod 605, the case 601 is fixedly connected to the top center of the water turbine main shaft 11, and a motor with the model number XD-37GB3525 is arranged inside the case 601, and the power cord of the motor is butted with an external power supply device, the output shaft of the motor is fixedly connected with a rotating rod 602, the bottom end of the case 601 is fixedly connected with the rotating rod 602, the rotating rod 602 is rotatably connected with the case 601 through a sealing bearing, a toothed disc 603 is fixedly sleeved on the outer wall of the rotating rod 602, the upper surface of the toothed disc 603 is in annular meshing connection with a plurality of toothed columns 604, the inner walls of the toothed columns 604 are transversely and fixedly connected with a cross rod 605, the cross rod 605 is rotatably connected with the main shaft 11 of the water turbine through the sealing bearing, the outer side end part of the cross rod 605 is connected with the blade 10, the central points of the toothed columns 604 and the cross rod 605 are both positioned on the same horizontal line, and the rotation of the toothed columns 604 can enable the cross rod 605 to concentrically rotate.

The cross bar 605 is connected with the blade 10 through a buffer mechanism 7, the buffer mechanism 7 comprises a support rod 701, a groove block 702, a sleeve 703, a groove ring 704, a sliding block 705, a diagonal rod 706, a square rod 707, a cover shell 708, a through groove 709 and a hydraulic rod 710, the support rod 701 is fixedly connected with the center of the inner side end part of the blade 10, the other end of the support rod 701 is hinged with the groove block 702, the other end of the groove block 702 is fixedly connected with the contact surface of the cross bar 605, the sleeve 703 is fixedly sleeved on the outer wall of the support rod 701, the groove ring 704 is fixedly sleeved on the outer wall of the sleeve 703, the sliding block 705 is slidably clamped at the bottom end of the inner side of the outer wall of the groove ring 704, the diagonal rod 706 is hinged at the bottom end of the sliding block 705, the square rod 707 is hinged at the other end of the diagonal rod 706, the cover shell 708 is fixedly connected with the contact surface of the main shaft 11 of the water turbine, the square rod 707 penetrates through the cover shell through the through groove 709, the right side end part of the square rod 707 is fixedly connected with the hydraulic rod 710, the hydraulic rod 710 is one of the hydraulic buffer, the bottom end of the hydraulic rod 710 is fixedly connected with the contact surface of the housing 708, the baffle is fixedly sleeved on the outer side of the outer wall of the square rod 707, rubber strips are fixedly connected to the peripheral end portion of the inner side surface of the baffle, the rubber strips are tightly abutted to the contact surface of the housing 708, water stains can be prevented from entering the housing 708 through the through groove 709, the groove ring 704 and the sliding block 705 form a sliding limiting structure, the groove ring 704 can play a role in limiting sliding of the sliding block 705, the sliding block 705 can slide inside the groove ring 704 but cannot be separated from the groove ring 704, the vertical section of the square rod 707 is of a square structure, and therefore the situation that the square rod 707 autorotates in the vertical sliding process inside the through groove 709 is prevented.

When the axial-flow water turbine water distribution device is used, an operator controls the operation control assembly 5 to control the water turbine water distribution device 4 to be gradually opened, water enters the axial-flow water turbine 1 and flows through the multistage impeller 3 of the water turbine, then the tail water drain pipe 2 is in water breakthrough and normal pressure, the operation control cabinet 6 controls the speed regulator 5 to gradually open the water turbine water distribution device 4, the axial-flow water turbine 1 is accelerated, the axial-flow water turbine 1 is in grid-connected load to a rated value, the pressure of the tail water drain pipe 2 is detected, and the temperature and the pressure of each auxiliary system of the axial-flow water turbine 1 are detected, whether the performance of the axial-flow water turbine water distribution device is in a good standby state is tested through the control assembly 5, because of local water head loss, wherein zeta is a local resistance coefficient, the more turns are, the more the diameter is changed, the more the water head loss is, the longer the on-way water head loss L is, and the larger on-way water head loss is, in the embodiment, water enters from the upper part of the water turbine water distribution device 4, turns the water with the least diameter change and travels the shortest, so that the water head loss is the least, and an operator can control a motor in the case 601 to rotate the rotating rod 602 and the toothed disc 603 at the same time, during the period, the toothed disc 603 can carry out meshing transmission on the toothed column 604, the cross rod 604 and the blades 10 can rotate, so that the adjustment of the angle between the blades 10 is realized, the application range of the axial flow water turbine water distribution device is enhanced, during the period, in the process that water flow acts on the upper parts of the blades 10, larger impact force generated at the moment of contact can enable the supporting rod 701 to rotate inwards to a certain extent, and during the period, the transmission of the inclined rod 706 is carried out, can produce decurrent effort with square bar 707, this in-process hydraulic stem 710 can compress and adsorb the buffering to the effort for the water impact cushions at the effort of blade 10 top, in order to prevent to produce the hydraulic turbine water distribution device local damage that great effort leads to in the twinkling of an eye because of the blade 10 top, and practicality can be strengthened, does benefit to and uses widely.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an axial flow turbine water distribution device, includes axial flow turbine (1), its characterized in that: the tail water drainage pipe (2) is arranged at the bottom end of the axial flow water turbine (1), a water turbine multi-stage impeller (3) is arranged inside the axial flow water turbine (1), a water turbine water distribution device (4) is arranged above the axial flow water turbine (1), a control assembly (5) is arranged on the left side of the water turbine water distribution device (4), a water turbine main shaft (11) is arranged inside the water turbine water distribution device (4), a plurality of blades (10) are annularly arranged on the outer wall of the water turbine main shaft (11), the blades (10) are connected with the water turbine main shaft (11) through an adjusting mechanism (6), a gate (8) is arranged above the water turbine water distribution device (4), and an upper reservoir (9) is arranged above the gate (8);

the adjusting mechanism (6) comprises a case (601), a rotating rod (602), a tooth disc (603), tooth columns (604) and a cross rod (605);

case (601) rigid coupling is in the top center of hydraulic turbine main shaft (11), the bottom rigid coupling of case (601) has bull stick (602), tooth chain wheel (603) have been cup jointed to the outer wall of bull stick (602) is fixed, the upper surface of tooth chain wheel (603) is the annular meshing and is connected with a plurality of tooth columns (604), the horizontal rigid coupling of inner wall of tooth column (604) has horizontal pole (605), horizontal pole (605) rotate with hydraulic turbine main shaft (11) through sealed bearing and link to each other, the outside tip of horizontal pole (605) is connected with blade (10).

2. The axial flow water turbine water distribution device according to claim 1, wherein: the central points of the tooth columns (604) and the cross rod (605) are all located on the same horizontal line.

3. The axial flow water turbine water distribution device according to claim 1, wherein: the cross bar (605) is connected with the blade (10) through a buffer mechanism (7);

the buffer mechanism (7) comprises a support rod (701), a groove block (702), a sleeve (703), a groove ring (704), a sliding block (705), a diagonal rod (706), a square rod (707), a housing (708), a through groove (709) and a hydraulic rod (710);

the supporting rod (701) is fixedly connected to the center of the end part of the inner side of the blade (10), the other end of the supporting rod (701) is hinged with a groove block (702), the other end of the groove block (702) is fixedly connected with the contact surface of the cross rod (605), the outer wall of the supporting rod (701) is fixedly sleeved with a sleeve (703), the outer wall of the sleeve (703) is fixedly sleeved with a groove ring (704), the bottom end of the inner side of the outer wall of the groove ring (704) is slidably clamped with a sliding block (705), the bottom end of the sliding block (705) is hinged with a diagonal rod (706), the other end of the diagonal rod (706) is hinged with a square rod (707), the right side of the square rod (707) is provided with a cover shell (708), the cover shell (708) is fixedly connected with the contact surface of the main shaft (11) of the water turbine, the square rod (707) penetrates through the cover shell (708) through a through groove (709), and the end part of the right side of the square rod (707) is fixedly connected with a hydraulic rod (710), the bottom end of the hydraulic rod (710) is fixedly connected with the contact surface of the housing (708).

4. The axial flow water turbine water distribution device according to claim 3, wherein: the outer side of the outer wall of the square rod (707) is fixedly sleeved with a baffle, and the peripheral end part of the inner side surface of the baffle is fixedly connected with a rubber strip.

5. The axial flow water turbine water distribution device according to claim 3, wherein: the groove ring (704) and the sliding block (705) form a sliding limiting structure.

6. The axial flow water turbine water distribution device according to claim 3, wherein: the vertical section of the square rod (707) is of a square structure.