Safety protection device for tail water gate of hydraulic generator

Abstract

The utility model relates to the technical field of safety protection devices, and discloses a hydraulic generator tail water gate safety protection device which comprises a tail water taper pipe, a tail water man gate foundation is fixedly connected to the front face of the tail water taper pipe, and a tail water man gate body is arranged on the front face of the tail water man gate foundation. A protection box is fixedly connected to the front face of the tail water man-entering door body, a limiting installation mechanism is arranged in the protection box, an auxiliary protection mechanism is arranged in the protection box, in the using process, through movement of a sliding rod and cooperation with a spring, a bolt is conveniently limited while the tail water man-entering door foundation and the tail water man-entering door body are limited, and the safety of the tail water man-entering door body is improved. Through rotation of the worm and cooperation of the worm gear, the position of the pressing block can be conveniently adjusted and limited at the same time, so that the tail water entering door body can be additionally limited, through movement of the floating block, the rotating frame rotates outside the guide rail frame, and when the tail water entering door body is damaged, a worker can be conveniently notified in time.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection devices, in particular to a safety protection device for the tail water gate of a water turbine generator. Background Technique

[0002] A water turbine generator is a device that converts hydraulic energy into electrical energy. It uses the impact force or gravity of water flow to act on the water turbine blades, driving the water turbine to rotate, thereby driving the generator to generate electricity. The tail water of the water turbine generator is the water after passing through the water turbine, and the gate set here is the tail water gate.

[0003] According to a safety protection device for the tail water gate of a water turbine generator (authorization announcement number: CN220726474U) disclosed on the patent network, it is described that "the utility model relates to the technical field of water turbine generators, and relates to a safety protection device for the tail water gate of a water turbine generator, including a tail water cone tube. A tail water access door foundation is fixedly arranged at the center of one side of the tail water cone tube. A plurality of tail water access door reinforcing rib plates are evenly and fixedly arranged on the outer surface of the tail water access door foundation, and the plurality of tail water access door reinforcing rib plates are fixedly connected to one side of the tail water cone tube. A ring flange is fixedly arranged on the side of the tail water access door foundation away from the tail water cone tube, and a plurality of access door foundation bolt holes are evenly distributed on the ring flange. Two groups of guiding racks are fixedly arranged on the tail water access door foundation symmetrically up and down. One end of the guiding rack away from the tail water access door foundation is fixedly connected to the tail water access door. A plurality of tail water access door flange screw holes are evenly and fixedly distributed on the tail water access door. The tail water access door flange screw holes and the tail water access door foundation flange screw holes correspond to each other, are equal in size and concentric after the tail water access door is completely closed, and are fixed by fastening bolts."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During the use of this utility model, a locking device is arranged in a ring shape along the flange at the connection between the tail water access door foundation and the tail water access door. The threaded cavity of the locking device body is in threaded cooperation with the clamping fixing bolt. By tightening the clamping fixing bolt, the gap between the rear end of the clamping fixing bolt and the locking cavity of the locking device is shortened. In actual use, since the locking device of this device is externally movable, it is inconvenient for staff to operate during use. At the same time, this device only adds locking to the tail water gate. When an accident occurs, the staff still cannot discover it in the first time. Therefore, it is necessary to improve a safety protection device for the tail water gate of a water turbine generator to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a safety protection device for the tail water gate of a water turbine generator to solve the problems raised in the above background technique.

[0007] To achieve the above object, the utility model provides the following technical solutions: A safety protection device for the tail water gate of a hydrogenerator, including a tail water draft tube. A tail water access door foundation is fixedly connected to the front of the tail water draft tube. A tail water access door body is arranged on the front of the tail water access door foundation. A protective box is fixedly connected to the front of the tail water access door body. A limit installation mechanism is arranged inside the protective box. An auxiliary protection mechanism is arranged inside the protective box.

[0008] The limit installation mechanism includes an installation component and a limit component. The installation component is arranged on the front of the tail water access door body. The limit component is arranged outside the tail water access door foundation.

[0009] Preferably, the installation component includes a bolt. The bolt is rotatably connected inside the tail water access door body. A limit block is fixedly connected to the outside of the bolt. A pressing box is fixedly connected to the front of the tail water access door body. A spring is fixedly connected inside the pressing box. One end of the spring away from the pressing box is fixedly connected to a clamping block. A sliding rod is fixedly connected to the end of the clamping block close to the spring, which is convenient for limiting the tail water access door foundation and the tail water access door body while limiting the bolt, and avoiding accidental loosening and other situations during use.

[0010] Preferably, the sliding rod is slidably connected to the pressing box. The clamping block is slidably connected to the pressing box. Grooves are opened at the corresponding positions of the limit block and the clamping block, and the clamping block contacts the limit block. The bolt is threadedly connected to the tail water access door foundation, which is convenient for a more stable installation process.

[0011] Preferably, the limit component includes a connecting frame. The connecting frame is fixedly connected to the outside of the tail water access door foundation. A worm is rotatably connected inside the connecting frame. A rotating column is rotatably connected inside the connecting frame. A worm gear is fixedly connected to the outside of the rotating column. A pressing block is fixedly connected to the outside of the rotating column, which is convenient for adjusting the position of the pressing block and performing limiting at the same time, so as to meet the additional limitation of the tail water access door body and increase the protection effect.

[0012] Preferably, the worm is meshed with the worm gear. The pressing block contacts the tail water access door body, which is convenient for a more stable limiting process.

[0013] Preferably, the auxiliary protection mechanism includes a guide rail frame. The guide rail frame is fixedly connected inside the protective box. A waterproof switch is arranged inside the guide rail frame. A rotating frame is rotatably connected to the outside of the guide rail frame. A floating block is fixedly connected to the bottom of the rotating frame. A slider is slidably connected inside the guide rail frame. A contact block is fixedly connected to the outside of the slider. A connecting rod is rotatably connected to the outside of the slider, which is convenient for notifying the staff in time when the tail water access door body is damaged, and reducing the occurrence of accidents.

[0014] Preferably, the contact block contacts with the waterproof switch, and a groove is formed at the corresponding position of the rotating frame and the connecting rod, and the connecting rod is rotatably connected inside the groove, which is convenient for the protection process to be more stable.

[0015] Compared with the prior art, the utility model provides a safety protection device for the tail water gate of a water turbine generator, which has the following beneficial effects:

[0016] 1. For the safety protection device of the tail water gate of the water turbine generator, during the use process, through the movement of the sliding rod arranged and the cooperation of the spring, it is convenient to limit the foundation of the tail water inlet gate and the tail water inlet gate body and limit the bolts at the same time, avoiding accidental situations such as loosening during the use process. Through the rotation of the worm arranged and the cooperation of the worm gear, it is convenient to adjust the position of the pressing block and perform limiting at the same time, so as to meet the additional limitation of the tail water inlet gate body and increase the protection effect.

[0017] 2. For the safety protection device of the tail water gate of the water turbine generator, during the use process, through the movement of the floating block arranged, the rotating frame rotates outside the guide rail frame, which is convenient to notify the staff in time when the tail water inlet gate body is damaged, reducing the occurrence of accidental situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings:

[0019] Figure 1 It is a front structural schematic diagram of the present utility model;

[0020] Figure 2 It is a sectional structural schematic diagram of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of the installation component of the present utility model;

[0022] Figure 4 It is an internal structural schematic diagram of the installation component of the present utility model;

[0023] Figure 5 It is a structural schematic diagram of the limiting component of the present utility model;

[0024] Figure 6 It is a structural schematic diagram of the auxiliary protection mechanism of the present utility model.

[0025] In the figure: 1, draft tube cone; 2, draft tube access door foundation; 3, draft tube access door body; 4, protective box; 5, limit installation mechanism; 51, installation component; 511, bolt; 512, limit block; 513, pressing box; 514, clamping block; 515, sliding rod; 516, spring; 52, limit component; 521, connecting frame; 522, worm; 523, rotating column; 524, worm gear; 525, pressing block; 6, auxiliary protection mechanism; 61, guide rail frame; 62, waterproof switch; 63, rotating frame; 64, floating block; 65, slider; 66, contact block; 67, connecting rod. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Embodiment 1:

[0029] Please refer to Figures 1-5 , the present invention provides a technical solution: a safety protection device for the draft tube gate of a hydrogenerator, including a draft tube cone 1, a draft tube access door foundation 2 fixedly connected to the front of the draft tube cone 1, a draft tube access door body 3 arranged on the front of the draft tube access door foundation 2, a protective box 4 fixedly connected to the front of the draft tube access door body 3, a limit installation mechanism 5 arranged inside the protective box 4, and an auxiliary protection mechanism 6 arranged inside the protective box 4;

[0030] The limit installation mechanism 5 includes an installation component 51 and a limit component 52. The installation component 51 is arranged on the front of the draft tube access door body 3, and the limit component 52 is arranged outside the draft tube access door foundation 2.

[0031] Further, the installation component 51 includes a bolt 511 which is rotatably connected inside the tailwater inlet gate body 3. A limiting block 512 is fixedly connected to the outside of the bolt 511. A pressing box 513 is fixedly connected to the front of the tailwater inlet gate body 3. A spring 516 is fixedly connected inside the pressing box 513. One end of the spring 516 away from the pressing box 513 is fixedly connected to a clamping block 514. A sliding rod 515 is fixedly connected to the end of the clamping block 514 close to the spring 516, which facilitates the limitation of the tailwater inlet gate foundation 2 and the tailwater inlet gate body 3 while limiting the bolt 511, and avoids unexpected situations such as loosening during use.

[0032] Further, the sliding rod 515 is slidably connected to the pressing box 513, the clamping block 514 is slidably connected to the pressing box 513. Grooves are provided at the corresponding positions of the limiting block 512 and the clamping block 514, and the clamping block 514 is in contact with the limiting block 512. The bolt 511 is threadedly connected to the tailwater inlet gate foundation 2, which facilitates a more stable installation process.

[0033] Further, the limiting component 52 includes a connecting frame 521 which is fixedly connected to the outside of the tailwater inlet gate foundation 2. A worm 522 is rotatably connected inside the connecting frame 521. A rotating column 523 is rotatably connected inside the connecting frame 521. A worm gear 524 is fixedly connected to the outside of the rotating column 523. A pressing block 525 is fixedly connected to the outside of the rotating column 523, which facilitates adjusting the position of the pressing block 525 while performing limitation, so as to meet the additional limitation of the tailwater inlet gate body 3 and increase the protection effect.

[0034] Further, the worm 522 meshes with the worm gear 524, and the pressing block 525 is in contact with the tailwater inlet gate body 3, which facilitates a more stable limiting process.

[0035] Embodiment 2:

[0036] Please refer to Figure 6 , and further obtained in combination with Embodiment 1. The auxiliary protection mechanism 6 includes a guide rail frame 61 which is fixedly connected inside the protection box 4. A waterproof switch 62 is arranged inside the guide rail frame 61. A rotating frame 63 is rotatably connected to the outside of the guide rail frame 61. A floating block 64 is fixedly connected to the bottom of the rotating frame 63. A slider 65 is slidably connected inside the guide rail frame 61. A contact block 66 is fixedly connected to the outside of the slider 65. A connecting rod 67 is rotatably connected to the outside of the slider 65, which facilitates notifying the staff in time when the tailwater inlet gate body 3 is damaged, and reducing the occurrence of unexpected situations.

[0037] Further, the contact block 66 is in contact with the waterproof switch 62. Grooves are provided at the corresponding positions of the rotating frame 63 and the connecting rod 67, and the connecting rod 67 is rotatably connected inside the grooves, which facilitates a more stable protection process.

[0038] During the actual operation process, when this device is in use, first, through the set bolt 511, the tailwater inlet door foundation 2 and the tailwater inlet door body 3 are position-limited and fixed. The staff pulls the sliding rod 515. Through the movement of the set sliding rod 515 and in cooperation with the spring 516, the clamping block 514 moves. Then the staff rotates the bolt 511. Through the rotation of the set bolt 511, the limiting block 512 rotates, realizing the position limit between the tailwater inlet door foundation 2 and the tailwater inlet door body 3. After the bolt 511 is tightened, the staff releases the sliding rod 515, making the clamping block 514 contact the limiting block 512, realizing the position limit of the bolt 511. After the installation is completed, the staff rotates the worm 522. Through the rotation of the set worm 522 and in cooperation with the worm gear 524, the rotating column 523 rotates inside the connecting frame 521, thereby making the pressing block 525 move. When an accident such as damage occurs to the tailwater inlet door body 3, the water level in the protective box 4 rises. Through the rising of the water level, the floating block 64 moves. Through the movement of the set floating block 64, the rotating frame 63 rotates outside the guide rail frame 61. In cooperation with the connecting rod 67, the slider 65 slides inside the guide rail frame 61, thereby making the contact block 66 move until it contacts the waterproof switch 62.

[0039] It should be noted that in this article, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to this process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A tailwater gate safety protection device for a hydro-turbine generator, comprising a tailwater cone (1), characterized in that: The tailwater cone (1) is fixedly connected to a tailwater inlet door foundation (2) at its front side, a tailwater inlet door body (3) is arranged at its front side, a protection box (4) is fixedly connected to the tailwater inlet door body (3) at its front side, a limited position installation mechanism (5) is arranged inside the protection box (4), and an auxiliary protection mechanism (6) is arranged inside the protection box (4); The position limiting installation mechanism (5) comprises a mounting component (51) and a position limiting component (52), wherein the mounting component (51) is arranged on the front side of the tailwater inlet door body (3), and the position limiting component (52) is arranged outside the tailwater inlet door foundation (2).

2. A hydro-generator tailwater gate safety protection device according to claim 1, characterized in that: The mounting assembly (51) comprises a bolt (511), wherein the bolt (511) is rotatably connected to the inside of the tailwater inlet door body (3), the bolt (511) is externally fixedly connected to a limiting block (512), the front of the tailwater inlet door body (3) is fixedly connected to a pressure holding box (513), the inside of the pressure holding box (513) is fixedly connected to a spring (516), the end of the spring (516) away from the pressure holding box (513) is fixedly connected to a clamping block (514), and the end of the clamping block (514) close to the spring (516) is fixedly connected to a sliding rod (515).

3. A hydro-generator tailwater gate safety protection device according to claim 2, characterized in that: The sliding rod (515) is slidably connected to the pressure holding box (513), the clamping block (514) is slidably connected to the pressure holding box (513), grooves are provided at corresponding positions of the limiting block (512) and the clamping block (514), and the clamping block (514) is in contact with the limiting block (512), and the bolt (511) is threadedly connected to the tailwater inlet door foundation (2).

4. A hydro-generator tailwater gate safety protection device according to claim 1, characterized in that: The limiting assembly (52) comprises a connecting frame (521), the connecting frame (521) is fixedly connected to the outside of the tailwater inlet door foundation (2), a worm (522) is rotatably connected inside the connecting frame (521), a rotating column (523) is rotatably connected inside the connecting frame (521), a worm wheel (524) is fixedly connected to the outside of the rotating column (523), and a pressure block (525) is fixedly connected to the outside of the rotating column (523).

5. A hydro-generator tailwater gate safety protection device according to claim 4, characterized in that: The worm (522) is meshed with the worm wheel (524), and the pressing block (525) is in contact with the tailwater inlet door body (3).

6. A hydro-generator tailwater gate safety protection device according to claim 1, characterized in that: The auxiliary protection mechanism (6) comprises a guide rail frame (61), wherein the guide rail frame (61) is fixedly connected to the inside of the protection box (4), a waterproof switch (62) is arranged on the inner side of the guide rail frame (61), the guide rail frame (61) is externally rotatably connected to a rotating frame (63), the bottom of the rotating frame (63) is fixedly connected to a floating block (64), the guide rail frame (61) is internally slidably connected to a slider (65), the slider (65) is externally fixedly connected to a contact block (66), and the slider (65) is externally rotatably connected to a connecting rod (67).

7. A hydro-generator tailwater gate safety protection device according to claim 6, characterized in that: The contact block (66) contacts the waterproof switch (62), and grooves are provided at corresponding positions of the rotating frame (63) and the connecting rod (67), and the connecting rod (67) is rotatably connected inside the groove.

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