A safety protection device for water turbine unit spiral case water pipe operation

Abstract

The application discloses a water turbine unit spiral case water pipe operation safety protection device and relates to the technical field of water turbine maintenance. The protection unit comprises a protection jacket, a safety belt arranged on the protection jacket, and a fixing button arranged on the safety belt. The electronic sensing unit comprises a detection assembly arranged on the protection jacket. The device can instantly detect falling, automatically trigger a strong magnetic attraction mechanism, provide manual backup operation, and be easily recycled for next use, thereby significantly improving operation safety, reducing the risk of high-altitude falling accidents, and being simple in system structure and easy to operate. The device is suitable for various high-altitude operation scenes, further improves practicality and adaptability, and guarantees the personal safety of maintenance personnel. The device not only improves the safety protection level of edge high-altitude operation, but also can prevent personnel casualty accidents.

Description

Technical Field

[0001] This invention relates to the technical field of turbine maintenance, and in particular to a safety protection device for turbine unit spiral casing water pipe operation. Background Technology

[0002] During annual maintenance of large hydroelectric generator units in hydropower plants, it is often necessary to enter the unit's flow path for maintenance work. However, the distance from the runner blades inside the spiral casing to the bottom of the tailrace is about 40 meters, and the distance from the cone gate to the bottom of the tailrace is about 30 meters. This often involves high-risk work at heights near edges.

[0003] Currently, when maintenance personnel enter through the cone gate and descend to the tailrace trash rack for work, safety ropes are used for safety protection on site. An automatic climbing machine is used to transport maintenance personnel and tools from the cone gate to the bottom of the tailrace for maintenance. Because the maintenance position on site is too high, there is a risk of personnel falling from height. Furthermore, when using safety ropes for safety protection, the protection measures are limited, and there is a possibility that personnel may be injured by being suddenly pulled by the safety rope during the fall. Summary of the Invention

[0004] In view of the problems existing in the current safety protection devices for turbine casing water pipe operation, the present invention is proposed.

[0005] Therefore, the present invention provides a safety protection device for working on the spiral casing water pipe of a water turbine unit. Its purpose is to solve the problem that personnel are at risk of falling from height due to the high location of on-site maintenance, and that when safety ropes are used for safety protection, the protection measures are limited and personnel may be injured by sudden pulling of the safety rope during the fall.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a safety protection device for operating water pipes in the spiral casing of a hydro turbine unit, comprising:

[0007] The protective unit includes a protective jacket, a safety belt mounted on the protective jacket, and a fixing button mounted on the safety belt;

[0008] The electronic sensing unit includes a detection component disposed on the protective jacket; and,

[0009] The magnetic unit includes magnetic components disposed on both sides inside the protective jacket.

[0010] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the detection component includes a gravity acceleration sensor disposed inside the protective jacket.

[0011] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, a PLC trigger is disposed inside the protective jacket, and an electronic push rod is disposed inside the protective jacket, wherein the electronic push rod is connected to a magnetic suction assembly.

[0012] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the magnetic suction component includes magnetic limiting plates disposed inside the front sides of the protective jacket.

[0013] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the device includes: a limiting box disposed inside the magnetic limiting plate, auxiliary storage boxes disposed on both sides of the limiting box, and a rotating retractable column rotatably disposed inside the auxiliary storage box.

[0014] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the limiting box is provided with a reset spring, and the other end of the reset spring is provided with a positive magnetic block.

[0015] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, wherein: a negative magnetic block is slidably arranged inside the first positive magnetic block, and a second positive magnetic block is slidably arranged inside the negative magnetic block.

[0016] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the other end of the positive magnetic block is provided with a pressure plate, and the pressure plate cooperates with the limit box.

[0017] As a preferred embodiment of the safety protection device for turbine casing water pipe operation described in this invention, the pressure plate is provided with a connecting block, the connecting block is provided with a steel wire, and the steel wire is rotatably connected to the rotating contraction column.

[0018] The beneficial effects of this invention are as follows: by instantly detecting falls, automatically triggering a powerful magnetic attraction mechanism, providing manual backup operation, and facilitating easy recovery for future use, it significantly improves operational safety, reduces the risk of falls from heights, and has a simple system structure that is easy to operate. It is applicable to various high-altitude work scenarios, further improving its practicality and adaptability, thereby ensuring the personal safety of maintenance personnel. It not only improves the safety protection level of high-altitude work near edges, but also prevents the occurrence of accidents resulting in personal injury or death. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the safety protection device for turbine unit spiral casing water pipe operation according to the present invention.

[0021] Figure 2 This is a schematic internal cross-sectional view of the safety protection device for the turbine casing water pipe operation of the present invention.

[0022] Figure 3 This is a schematic diagram of the retractable structure of the protective component of the turbine volute water pipe operation safety protection device of the present invention.

[0023] Figure 4 This is a schematic diagram of the unfolded structure of the protective components of the turbine volute water pipe operation safety protection device of the present invention.

[0024] Figure 5 This is a schematic diagram of the unfolded cross-sectional structure of the protective components of the turbine volute water pipe operation safety protection device of the present invention. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1, referring to Figure 1 - Figure 5 The first embodiment of the present invention provides a safety protection device for operating the spiral casing water pipe of a water turbine unit. The device includes: a protection unit 100 including a protective jacket 101, a safety belt 102 disposed on the protective jacket 101, and a fixing button 103 disposed on the safety belt 102. The protective jacket 101 is worn by the operator and is fixed by the safety belt 102 and the fixing button 103.

[0030] The electronic sensing unit 200 includes a detection component 201 disposed on the protective jacket 101, and provides safety protection through the detection component 201 on the protective jacket 101; and,

[0031] The magnetic unit 300 includes magnetic components 301 disposed on both sides inside the protective jacket 101. The magnetic components 301 are detected and triggered by the detection component 201, causing the magnetic components 301 to unfold and begin to attract the iron wall.

[0032] The detection component 201 includes a gravity acceleration sensor 201a, a PLC trigger 201b, and an electronic push rod 201c, all located inside the protective jacket 101. The electronic push rod 201c is connected to the magnetic suction component 301. The gravity acceleration sensor 201a detects the operator's gravity and movement speed. If the movement speed is abnormal, the gravity acceleration sensor 201a sends a signal to the PLC trigger 201b, which then controls the magnetic suction component 301 to unfold for rescue and protection.

[0033] During use, when performing work protection, the operator puts on the protective jacket 101 and secures it with the fastening button 103 to fix the jacket on their body before starting work. In the event of an accidental fall, the gravity acceleration sensor 201a inside the protective jacket 101 detects external stimuli. If the operator's movement speed becomes abnormal, the gravity acceleration sensor 201a transmits the data to the PLC trigger 201b. The gravity acceleration sensor 201a can identify changes in gravity acceleration during a sudden fall, thereby transmitting a signal to the PLC trigger 201b, which automatically triggers the safety protection device, improving the safety protection level. The PLC trigger 201b then controls the electronic push rod 201c, which extends downwards and presses against the limit lever 303d, causing the limit lever 303d to disengage from the gear 303. c. The return spring 301c, which is in a compressed state inside the magnetic attraction component 301, releases the restriction, causing the return spring 301c to pop the positive strong magnetic block 301d out of the limiting box 301b. At the same time, the negative strong magnetic block 301e inside the positive strong magnetic block 301d pops out from inside the positive strong magnetic block 301d due to the repulsion of like poles. The positive strong magnetic block 301f also pops out from inside the negative strong magnetic block 301e. Due to the internal space restriction of the magnetic attraction limiting plate 301a, the positive strong magnetic block 301d and the negative strong magnetic block 301e are confined to the inside and unfold side by side to form a rectangle. Because they are freed from the limiting box 301b, the magnetism is released, generating a strong magnetic force that attracts the iron wall inside, allowing the operator to be firmly fixed to the iron wall while waiting for rescue, and ensuring the safety of the operator.

[0034] Furthermore, the protective jacket 101 is made of nylon material, which has abrasion-resistant properties. Similar to a swimming life jacket, its structure can withstand a 200kg drop impact. The fastening buttons 103, made of thin steel wire rope, are located at the front of the protective jacket 101 and can tighten the two jacket panels, also withstanding a 200kg drop impact. The magnetic component 301, when open, has a strong magnetic attraction to the steel plate, also withstanding a 200kg drop impact, effectively ensuring the safety of operators during work and production.

[0035] Example 2, refer to Figure 1 - Figure 5This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the magnetic suction assembly 301 includes a magnetic suction limiting plate 301a disposed inside both sides of the front end of the protective jacket 101, a limiting box 301b disposed inside the magnetic suction limiting plate 301a, a secondary storage box 301n disposed on both sides of the limiting box 301b, and a rotating retractable column 301s rotatably disposed inside the secondary storage box 301n. Through the cooperation of the magnetic suction limiting plate 301a and the limiting box 301b inside the magnetic suction assembly 301, the positive strong magnetic block 301d can be compressed inside. Furthermore, the limiting box 301b is made of a shielding magnetic material to prevent the positive strong magnetic block 301d from generating magnetic force in the retracted state.

[0036] Compared to Embodiment 1, the limiting box 301b is further provided with a reset spring 301c inside, and a positive magnetic block 301d is provided at the other end of the reset spring 301c. The positive magnetic block 301d is fixed and limited by the reset spring 301c inside the limiting box 301b.

[0037] Furthermore, a negative magnetic block 301e is slidably disposed inside the positive magnetic block 301d, and a positive magnetic block 301f is slidably disposed inside the negative magnetic block 301e. By disposing of the negative magnetic block 301e inside the positive magnetic block 301d and the positive magnetic block 301f inside the negative magnetic block 301e, the magnetic repulsion generates an elastic force for unfolding.

[0038] Furthermore, a pressure plate 301g is provided at the other end of the positive magnetic block 301f, and the pressure plate 301g cooperates with the limiting box 301b. Through the cooperation of the pressure plate 301g on the top of the positive magnetic block 301f and the limiting box 301b, the positive magnetic block 301f can be compressed in its normal state and limited inside the limiting box 301b.

[0039] Furthermore, a connecting block 301h is provided on the pressure plate 301g, and a steel wire 301l is provided on the connecting block 301h. The steel wire 301l is rotatably connected to the rotating shrink column 301s. Through the connection between the pressure plate 301g and the connecting block 301h, the steel wire 301l is connected to the steel wire 301l, so that it can be completely recycled after being unfolded and recompressed into the limiting box 301b for secondary use.

[0040] During use, when the magnetic attraction component 301 is triggered to unfold for rescue, the detection component 201, when electronically unfolding, detects an abnormal movement speed via the gravity acceleration sensor 201a and sends a signal. This is controlled by the PLC trigger 201b to extend the electronic push rod 201c downwards, squeezing the limit lever 303d off the gear 303c, thus releasing the gear 303c from its restraint. Simultaneously, the return spring 301c, which is always compressed inside the limit box 301b, squeezes the positive magnetic block 301d to both sides. At the same time, the negative magnetic block 301e inside the positive magnetic block 301d pops out from inside the positive magnetic block 301d due to the principle of like poles repelling each other. Similarly, the second positive magnetic block 301f pops out from inside the negative magnetic block 301e, and through the internal space of the magnetic limit plate 301a... The space restriction allows the positive strong magnetic block 301d and the negative strong magnetic block 301e to unfold in parallel with the positive strong magnetic block 301f to form a rectangle. At the same time, when the positive strong magnetic block 301f pops out, it pushes the top pressure plate 301g against the top of the magnetic attraction limiting plate 301a. As the pressure plate 301g moves, the connecting block 301h carries the steel wire 301l, causing the rotating shaft 303b to rotate and be fixed, allowing for rapid unfolding. Furthermore, as the positive strong magnetic block 301d and the negative strong magnetic block 301e and the positive strong magnetic block 301f disengage from the limiting box 301b, the limiting box 301b cannot shield the magnetic force, causing the positive strong magnetic block 301d and the negative strong magnetic block 301e and the positive strong magnetic block 301f to generate a strong magnet. This magnetic force penetrates the protective jacket 101 and adheres to the iron wall of the maintenance pipeline, thus providing safety protection for the operators.

[0041] The gravity acceleration sensor 201a quickly detects abnormal movement and triggers the PLC trigger 201b, enabling the electronic push rod 201c to respond rapidly. This releases the limit lever 303d and activates the reset spring 301c, sequentially unfolding the positive and negative magnetic blocks to form a strongly adsorbed rectangular structure. This process not only ensures that operators can quickly receive safety protection in emergencies, but also improves the system's reliability and ease of operation through magnetic control and structural optimization. The system design considers ease of maintenance and adaptability, making it suitable for various high-altitude work environments and significantly improving operational safety. It can also be used as a teaching tool for safety training, promoting the development of high-altitude work safety technology.

[0042] The remaining structure is the same as that in Example 1.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A safety protection device for operating water pipes on the spiral casing of a hydro turbine unit, characterized in that: Include: The protection unit (100) includes a protective jacket (101), a safety belt (102) arranged on the protective jacket (101), and a fixing button (103) arranged on the safety belt (102); The electronic sensing unit (200) includes a detection assembly (201) arranged on the protective jacket (101); and, The magnetic attraction unit (300) includes a magnetic attraction assembly (301) arranged on both sides inside the protective jacket (101); The detection assembly (201) includes a gravity acceleration sensor (201a) arranged inside the protective jacket (101), a plc trigger (201b) arranged inside the protective jacket (101), and an electronic push rod (201c) arranged inside the protective jacket (101), and the electronic push rod (201c) is connected with the magnetic attraction assembly (301); The magnetic attraction assembly (301) includes a magnetic attraction limiting plate (301a) arranged inside both sides of the front end of the protective jacket (101), a limiting box (301b) arranged inside the magnetic attraction limiting plate (301a), a vice storage box (301n) arranged on both sides of the limiting box (301b), and a rotating retractable column (301s) arranged inside the vice storage box (301n); The limiting box (301b) is provided with a reset spring (301c) inside, and the other end of the reset spring (301c) is provided with a positive strong magnetic block one (301d); The inside of the positive strong magnetic block one (301d) is slidably provided with a negative strong magnetic block (301e), and the inside of the negative strong magnetic block (301e) is slidably provided with a positive strong magnetic block two (301f); The other end of the positive strong magnetic block two (301f) is provided with a pressing plate (301g), and the pressing plate (301g) is matched with the limiting box (301b); The pressing plate (301g) is provided with a connecting block (301h), the connecting block (301h) is provided with a steel wire (301l), and the steel wire (301l) is rotationally connected with the rotating retractable column (301s); Control electronic push rod (201c) through the plc trigger (201b), electronic push rod (201c) start work down to extend, press to limit card bar, make limit card bar from gear, through magnetic attraction assembly (301) inside always in compression state under reset spring (301c), remove limit, make reset spring (301c) put out positive strong magnetic block one (301d) from limit box (301b) inside, while positive strong magnetic block one (301d) inside negative strong magnetic block (301e) because is magnet same kind repel the reason negative strong magnetic block (301e) from positive strong magnetic block one (301d) inside pop out, and positive strong magnetic block two (301f) also from negative strong magnetic block (301e) inside pop out, and because magnetic attraction limit board (301a) inside space limit, make positive strong magnetic block one (301d) and negative strong magnetic block (301e) and positive strong magnetic block two (301f) limit in parallel development inside, form a rectangle, and because limit box (301b) is removed, make magnetic development, produce strong magnetic force.

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