Working safety protection device for volute water pipe of hydraulic turbine set

Abstract

The invention discloses a water turbine set volute water pipe operation safety protection device, and relates to the technical field of water turbine maintenance, and the water turbine set volute water pipe operation safety protection device comprises a protection unit which comprises a protection jacket, a safety belt arranged on the protection jacket, and a fixing button arranged on the safety belt; the electronic induction unit comprises a detection assembly arranged on the protective jacket. By instantly detecting falling, automatically triggering a powerful magnetic attraction mechanism, providing manual standby operation and being easy to recycle for next use, the operation safety is remarkably improved, the risk of high-altitude falling accidents is reduced, and the system is simple in structure, easy to operate, suitable for various high-altitude operation scenes and high in practicability. The practicability and the adaptability are further improved, so that the personal safety of overhaul and maintenance personnel is guaranteed, the safety protection level of high-altitude operation near the edge is improved, and casualties and accidents can be completely eradicated.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine maintenance, and in particular to a water turbine unit volute water pipe operation safety protection device. Background Art

[0002] During the annual maintenance of large turbine generator units in hydropower plants, it is often necessary to enter the flow channel of the unit for maintenance work, but the height from the runner blade position inside the volute to the bottom of the tailwater pipe is about 40 meters, and the height from the cone pipe door to the bottom of the tailwater pipe is about 30 meters. This often involves high-risk edge height operations.

[0003] Currently, when maintenance personnel enter from the cone pipe door and descend to the tailwater pipe trash rack to perform operations, safety ropes are used for safety protection on site, and automatic climbing machines are used to transport maintenance personnel, tools, etc. from the cone pipe door to the bottom of the tailwater pipe for maintenance. Because the on-site maintenance position is too high, there is a risk of personnel falling from a height, and when safety ropes are used for safety protection, the protection measures are single, and personal injury may be caused by sudden pulling of the safety rope during the fall. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing safety protection devices for volute water pipe operations of water turbine units, the present invention is proposed.

[0005] Therefore, the present invention provides a safety protection device for turbine volute water pipe operations, the purpose of which is to solve the problem that personnel are at risk of falling from a height because the location of on-site maintenance is too high, and when a safety rope is used for safety protection, the protection measure is single, and personnel may be injured by sudden pulling of the safety rope during the falling process.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a safety protection device for volute water pipe operation of a water turbine unit, comprising:

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

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

[0009] The magnetic attraction unit comprises magnetic attraction components arranged on both sides of the interior of the protective jacket.

[0010] As a preferred solution of the water turbine volute water pipe operation safety protection device of the present invention, the detection component includes a gravity acceleration sensor arranged inside the protective jacket.

[0011] As a preferred solution of the turbine unit volute water pipe operation safety protection device of the present invention, it comprises: a plc trigger arranged inside the protective jacket, and an electronic push rod arranged inside the protective jacket, and the electronic push rod is connected to the magnetic suction component.

[0012] As a preferred solution of the turbine volute water pipe operation safety protection device of the present invention, the magnetic attraction component includes magnetic attraction limit plates arranged inside both sides of the front end of the protective jacket.

[0013] As a preferred solution of the water pipe operation safety protection device for the volute of the turbine unit of the present invention, it includes: a limit box arranged inside the magnetic limit plate, auxiliary storage boxes arranged on both sides of the limit box, and a rotating retractable column rotatably arranged inside the auxiliary storage box.

[0014] As a preferred solution of the water pipe operation safety protection device for the volute of the turbine unit of the present invention, a reset spring is arranged inside the limit box, and a positive strong magnetic block 1 is arranged at the other end of the reset spring.

[0015] As a preferred solution of the turbine volute water pipe operation safety protection device of the present invention, wherein: the positive strong magnetic block 1 is slidably arranged inside with a negative strong magnetic block, and the negative strong magnetic block is slidably arranged inside with a positive strong magnetic block 2.

[0016] As a preferred solution of the water pipe operation safety protection device for the volute of the turbine unit of the present invention, a pressure plate is provided at the other end of the second positive strong magnetic block, and the pressure plate cooperates with the limit box.

[0017] As a preferred solution of the turbine volute water pipe operation safety protection device of the present 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 the present invention are as follows: by instantly detecting falls, automatically triggering a strong magnetic suction mechanism, providing manual standby operation, and easily recovering it for next use, the operational safety is significantly improved, and the risk of high-altitude fall accidents is reduced; the system has a simple structure, is easy to operate, and is suitable for a variety of high-altitude operation scenarios, further improving its practicality and adaptability to ensure the personal safety of inspection and maintenance personnel, which not only improves the safety protection level of operations at heights near edges, but also prevents the occurrence of accidents involving casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the volute water pipe operation safety protection device of the water turbine unit of the present invention.

[0021] Figure 2 It is a schematic diagram of the internal section of the water pipe operation safety protection device of the volute of the turbine unit of the present invention.

[0022] Figure 3 It is a schematic diagram of the retracted structure of the protection component of the water pipe operation safety protection device for the volute of the turbine unit of the present invention.

[0023] Figure 4 It is a schematic diagram of the expanded structure of the protection component of the water pipe operation safety protection device for the volute of the turbine unit of the present invention.

[0024] Figure 5 The present invention is a schematic diagram of the expanded cross-sectional structure of the protection component of the volute water pipe operation safety protection device of the turbine unit. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1, reference Figure 1 - Figure 5 , which is the first embodiment of the present invention, provides a safety protection device for volute water pipe operation of a turbine unit, the device comprising: a protection unit 100 comprising a protection jacket 101, a safety belt 102 arranged on the protection jacket 101, and a fixing button 103 arranged on the safety belt 102, the protection jacket 101 is worn on the operator, and the protection jacket 101 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 safety protection is performed through the detection component 201 on the protective jacket 101; and,

[0031] The magnetic unit 300 includes magnetic components 301 disposed on both sides of the protective jacket 101. The magnetic components 301 are detected and triggered by the detection component 201, so that the magnetic components 301 are unfolded and start to absorb the iron wall.

[0032] Among them, the detection component 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 to the magnetic suction component 301, and the gravity acceleration sensor 201a is used to detect the gravity and movement speed of the operator. If the movement speed is abnormal, the gravity acceleration sensor 201a transmits it to the plc trigger 201b, and the plc trigger 201b controls the magnetic suction component 301 to start to unfold for rescue protection.

[0033] During use, when performing work protection, the operator puts on the protective jacket 101 and operates the fixing button 103 to fix the protective jacket 101 on the body, and starts working. If a fall occurs accidentally, the gravity acceleration sensor 201a inside the protective jacket 101 detects the outside world. If the operator's moving speed is abnormal, the gravity acceleration sensor 201a transmits data to the inside of the plc trigger 201b. The gravity acceleration sensor 201a can identify the change in gravity acceleration caused by a sudden fall, thereby transmitting a signal to the plc trigger 201b, thereby automatically triggering the safety protection device and improving the safety protection level. The plc trigger 201b controls the electronic push rod 201c, and the electronic push rod 201c starts to work and extends downward, pressing the limit card rod 303d, so that the limit card rod 303d disengages from the gear 303. c, the restriction is released by the reset spring 301c which has been in a compressed state inside the magnetic suction component 301, so that the reset spring 301c pops out the positive strong magnetic block 1 301d from the limit box 301b, and at the same time, the negative strong magnetic block 301e inside the positive strong magnetic block 1 301d pops out from the positive strong magnetic block 1 301d due to the repulsion of like-charged magnets, and the positive strong magnetic block 2 301f also pops out from the negative strong magnetic block 301e, and due to the internal space restriction of the magnetic suction limit plate 301a, the positive strong magnetic block 1 301d and the negative strong magnetic block 301e are restricted to expand side by side with the positive strong magnetic block 2 301f inside to form a rectangle, and because they are separated from the limit box 301b, the magnetism is expanded to generate strong magnetic force, which adsorbs the internal iron wall, so that the operator can be firmly fixed on the iron wall to wait for rescue, and the life safety of the operator is guaranteed.

[0034] The protective jacket 101 is made of nylon material and has wear-resistant properties. The jacket structure is similar to a swimming life jacket and can resist the impact of 200kg of falling gravity. The fixing button 103 is made of fine steel wire rope material and is located in front of the protective jacket 101. It can tighten the left and right jackets and resist the impact of 200kg of falling gravity. When the magnetic suction component 301 is in the open state, it has a strong magnetic attraction to the steel plate and can resist the impact of 200kg of falling gravity, which can effectively ensure the safety of the operator's work and production life.

[0035] Example 2, reference Figure 1 - Figure 5, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the magnetic attraction component 301 includes a magnetic attraction limit plate 301a arranged inside the two sides of the front end of the protective jacket 101, a limit box 301b arranged inside the magnetic attraction limit plate 301a, an auxiliary storage box 301n arranged on both sides of the limit box 301b, and a rotating contraction column 301s rotatably arranged inside the auxiliary storage box 301n. Through the cooperation of the magnetic attraction limit plate 301a and the limit box 301b inside the magnetic attraction component 301, the positive strong magnetic block 301d can be compressed inside, and the limit box 301b is a shielding magnetic material to prevent the positive strong magnetic block 301d from generating magnetic force in the contracted state.

[0036] Compared with Example 1, further, a return spring 301c is provided inside the limit box 301b, and a positive strong magnetic block 301d is provided at the other end of the return spring 301c, and the positive strong magnetic block 301d is fixed and limited by the return spring 301c inside the limit box 301b.

[0037] Furthermore, a negative strong magnetic block 301e is slidingly arranged inside the positive strong magnetic block 1 301d, and a positive strong magnetic block 301f is slidingly arranged inside the negative strong magnetic block 301e. By arranging a negative strong magnetic block 301e inside the positive strong magnetic block 1 301d and a positive strong magnetic block 301f inside the negative strong magnetic block 301e, the magnetic repulsion generates elastic force for unfolding.

[0038] Furthermore, a pressure plate 301g is provided at the other end of the positive strong magnetic block 301f, and the pressure plate 301g cooperates with the limit box 301b. Through the cooperation of the pressure plate 301g on the top of the positive strong magnetic block 301f and the limit box 301b, the positive strong magnetic block 301f can be compressed in the normal state and limited inside the limit 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, and the steel wire 301l is rotatably connected to the rotating contraction column 301s. By connecting the pressure plate 301g and the connecting block 301h, and connecting the steel wire 301l to the steel wire 301l, the steel wire 301l can be completely recovered during use and compressed again into the limit box 301b for secondary use.

[0040] During use, when the magnetic suction component 301 is triggered to deploy for rescue, when the detection component 201 is electrically controlled to deploy, the gravity acceleration sensor 201a detects abnormal moving speed and sends a signal, and the PLC trigger 201b is controlled to make the electronic push rod 201c extend downward, and the limit card rod 303d is squeezed from the gear 303c, so that the gear 303c is released from the restriction. At the same time, the return spring 301c that has been in a compressed state inside the limit box 301b squeezes the positive strong magnetic block 1 301d to both sides, and at the same time, the negative strong magnetic block 301e inside the positive strong magnetic block 1 301d pops up from the positive strong magnetic block 1 301d because of the principle that like magnets repel each other. Similarly, the positive strong magnetic block 2 301f pops up from the negative strong magnetic block 301e, and passes through the internal space of the magnetic suction limit plate 301a. The space restriction makes the positive strong magnetic block 1 301d and the negative strong magnetic block 301e and the positive strong magnetic block 2 301f can only be unfolded in parallel to form a rectangle. At the same time, when the positive strong magnetic block 2 301f pops up, it also pushes the top pressure plate 301g to the top of the magnetic limit plate 301a. When the pressure plate 301g moves, the connecting block 301h carries the steel wire 301l to rotate and fix the rotating shaft 303b, so that it can be quickly unfolded, and the positive strong magnetic block 1 301d and the negative strong magnetic block 301e and the positive strong magnetic block 2 301f are separated from the limit box 301b. The limit box 301b cannot shield the magnetic force, so that the positive strong magnetic block 1 301d and the negative strong magnetic block 301e and the positive strong magnetic block 2 301f begin to generate strong magnetism, so that the magnetic force passes through the protective jacket 101 and is adsorbed on the iron wall of the maintenance pipeline, so that the operator is safely protected.

[0041] By quickly detecting abnormal movement through the gravity acceleration sensor 201a and the PLC trigger 201b, the electronic push rod 201c can respond quickly, release the limit rod 303d and activate the reset spring 301c, and unfold the positive strong magnetic block and the negative strong magnetic block in turn to form a strongly adsorbed rectangular structure. This process not only ensures that the operator can quickly get safety protection in an emergency, but also improves the reliability of the system and the ease of operation through magnetic control and structural optimization. The design of the system takes into account the convenience and adaptability of maintenance, is suitable for a variety of high-altitude working environments, and significantly improves the safety of operations. It can also be used as a teaching aid for safety training and promotes the development of high-altitude working safety technology.

[0042] The remaining structures are the same as those of Example 1.

[0043] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered 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 is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0044] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A safety protection device for volute water pipe operation of a water turbine unit, characterized in that: include: The protection unit (100) comprises a protection jacket (101), a safety belt (102) arranged on the protection jacket (101), and a fixing button (103) arranged on the safety belt (102); The electronic sensing unit (200) comprises a detection component (201) arranged on the protective jacket (101); and, The magnetic attraction unit (300) comprises magnetic attraction components (301) arranged on both sides of the interior of the protective jacket (101).

2. The water turbine volute water pipe operation safety protection device according to claim 1 is characterized in that: The detection component (201) comprises a gravity acceleration sensor (201a) arranged inside the protective jacket (101).

3. The water turbine volute water pipe operation safety protection device according to claim 2 is characterized in that: A plc trigger (201b) is arranged inside the protective jacket (101), and an electronic push rod (201c) is arranged inside the protective jacket (101), and the electronic push rod (201c) is connected to a magnetic attraction component (301).

4. The water turbine volute water pipe operation safety protection device according to claim 3 is characterized in that: The magnetic attraction component (301) comprises magnetic attraction limiting plates (301a) arranged inside two sides of the front end of the protective jacket (101).

5. The water turbine volute water pipe operation safety protection device according to claim 4 is characterized in that: A limit box (301b) is arranged inside the magnetic limit plate (301a), a secondary storage box (301n) is arranged on both sides of the limit box (301b), and a rotating contraction column (301s) is rotatably arranged inside the secondary storage box (301n).

6. The water turbine volute water pipe operation safety protection device according to claim 5 is characterized in that: A return spring (301c) is arranged inside the limit box (301b), and a positive strong magnetic block 1 (301d) is arranged at the other end of the return spring (301c).

7. The water turbine volute water pipe operation safety protection device according to claim 6 is characterized in that: The positive strong magnetic block 1 (301d) is slidably provided with a negative strong magnetic block (301e) inside, and the negative strong magnetic block (301e) is slidably provided with a positive strong magnetic block 2 (301f) inside.

8. The water turbine volute water pipe operation safety protection device according to claim 7 is characterized in that: A pressing plate (301g) is provided at the other end of the second positive strong magnetic block (301f), and the pressing plate (301g) cooperates with the limiting box (301b).

9. The water turbine volute water pipe operation safety protection device according to claim 8 is characterized in that: 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 rotatably connected to the rotating contraction column (301s).

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