Inflatable runner blade safety protection device

Abstract

The utility model discloses an inflatable runner blade safety protection device which is used for edge operation protection near a runner blade when a water-turbine generator set is shut down to be overhauled and maintained. According to the device, an annular protection structure is formed by continuously spliced inflatable airbags, and tensioning structures are arranged between the airbags. Hook-and-loop fasteners are vertically distributed at the connecting ends of the adjacent air bags at equal intervals, threaded holes are formed in the two ends of the air bags, the tensioning ropes penetrate through the threaded holes to be connected with the air bags in series, and the tensioning ropes are matched with rope locking structures (rope locking bolts, friction cushion blocks with friction layers and the like). The air bag is in an arc-shaped plate shape when expanded, is provided with an air nozzle, is provided with a barometer on a connecting air pipe, and is sewn by adopting polyurethane coating fabric. The device is quickly spliced through the hook-and-loop fasteners, is easy and convenient to install and can be flexibly adjusted according to space and requirements; a tensioning and rope locking structure enables connection to be firm, and an air bag buffers and prevents collision; and the arc-shaped structure is attached to the rotating wheel, the material is excellent and durable, and the problems that a traditional protection device is complex in installation and poor in flexibility are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology for hydropower equipment, and in particular to a safety protection device for inflatable turbine blades. Background Technology

[0002] When hydroelectric generator units are shut down for maintenance or repair, workers need to perform near-edge work near the runner blades. Due to the confined space around the runner blades and the considerable height of the edge, there is a risk of falls. Traditional safety measures often involve rigid guardrails or safety ropes with safety belts, which are complex to install, lack flexibility, and cannot adapt to the needs of different working environments. Therefore, there is an urgent need for a safety protection device that can be quickly installed, flexibly used, and is safe and reliable. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that conventional edge protection structures are complex to install and lack flexibility.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an inflatable rotor blade safety protection device, comprising an inflatable airbag continuously spliced ​​and connected to form an annular protective structure, wherein a tensioning structure is provided in the annular protective structure and the tensioning structure is connected between the inflatable airbags.

[0005] Preferably, a Velcro strap for connection is provided between the connecting ends of adjacent inflatable airbags, and the Velcro straps are evenly distributed in the vertical direction.

[0006] Preferably, both ends of the inflatable airbag are provided with threaded holes, and the tensioning structure is a tensioning rope that continuously passes through the threaded holes and connects all the inflatable airbags in series.

[0007] Preferably, the tension rope is connected to a locking rope structure that prevents the tension rope from being pulled along the threaded hole.

[0008] Preferably, the rope locking structure is a rope locking bolt, with a connecting hole on the axis of the rope locking bolt for the tension rope to pass through. A friction pad is connected to the end wall of the rope locking bolt. The friction pad is cylindrical, and the threaded hole is a tapered hole. The friction pad is threadedly connected to the threaded hole, and the friction pad has slots evenly arranged around its axis.

[0009] Preferably, a friction layer is provided on the inner sidewall of the friction pad.

[0010] Preferably, the threaded holes are equidistantly distributed at both ends of the inflatable airbag along the vertical direction.

[0011] Preferably, the inflatable airbag has an arc-shaped plate-like structure when inflated.

[0012] Preferably, an air nozzle is installed on the inflatable airbag, and a barometer is installed on the connecting air tube between the air nozzle and the inflatable airbag.

[0013] Preferably, the inflatable airbag is made of polyurethane coated fabric.

[0014] This utility model provides an inflatable rotor blade safety protection device, which has the following beneficial effects.

[0015] 1. The system employs continuously assembled inflatable airbags with vertically equidistant Velcro straps at the connecting ends of adjacent airbags, allowing for quick assembly during installation, greatly simplifying the process and saving time and manpower. Furthermore, the size and shape of the annular protective structure can be flexibly adjusted to suit the narrow and complex spatial shapes around different impeller blades and specific operational needs, making it well-suited for various working environments.

[0016] 2. A tensioning structure (tension rope) is installed in the ring-shaped protective structure, which connects all the inflatable airbags in series and fixes them through a locking structure (locking bolts, friction pads with friction layers, etc.), making the entire protective device firmly connected and not easy to loosen. The inflatable airbags can provide cushioning protection in the event of an accidental collision, reducing the impact force and lowering the risk of injury from falls.

[0017] 3. An air nozzle and a pressure gauge connected to the air tube are installed on the inflatable airbag to facilitate real-time monitoring of the air pressure inside the airbag, timely detection and handling of abnormal air pressure, and to ensure that the airbag is always in good working condition and continues to play a protective role.

[0018] 4. When inflated, the airbag forms an arc-shaped plate structure that better conforms to the shape of the rotating blades, providing better protection around them and enhancing the protective effect. The threaded holes are evenly distributed vertically, ensuring more uniform installation and stress distribution of the tension rope, thus improving the stability of the protective device. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the installation structure of the protective device in an embodiment of this utility model.

[0021] Figure 2 This is a front view of the structure of the protective unit in an embodiment of this utility model.

[0022] Figure 3 This is a top view of the protective unit in an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the connection structure between the tension rope and the threaded hole in an embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of the rope-locking bolt in an embodiment of this utility model.

[0025] In the picture: 2. Inflatable airbag; 3. Air nozzle; 4. Threaded hole; 5. Tensioning rope; 6. Velcro; 7. Rope locking bolt; 8. Friction pad. Detailed Implementation

[0026] like Figure 1-5 As shown, this utility model provides an inflatable rotor blade safety protection device, including an inflatable airbag 2 continuously spliced ​​and connected to form an annular protective structure. A tensioning structure is provided in the annular protective structure and is connected between the inflatable airbags 2.

[0027] Before use, the airbag 2 is inflated using an inflation device, allowing it to expand rapidly and form a stable protective structure. The inflated airbags 2 are then evenly distributed around the outer edge of the rotor blades. The airbags 2 are then connected by a tensioning structure to form a ring-shaped protective structure around the rotor blades, serving as a stable safety protection measure for edge operations. After the operation is completed, the tensioning structure is removed, the airbags 2 are deflated, and the equipment can be transported. The number of airbags 2 can be adjusted to accommodate edge construction on different types of rotor blades.

[0028] like Figure 2 and Figure 3 As shown, to improve the connection efficiency of the inflatable airbags 2, Velcro 6 is provided between the connecting ends of adjacent inflatable airbags 2 for connection. The Velcro 6 is evenly distributed in the vertical direction. The Velcro 6 is used to bond two inflatable airbags 2 together, initially fixing the position of the inflatable airbags 2. After all the inflatable airbags 2 are quickly connected around the rotating blades using the Velcro 6, the subsequent tensioning structure can be connected, realizing the rapid installation of the protective device.

[0029] like Figure 2 and Figure 3 As shown. Both ends of the inflatable airbag 2 are provided with threaded holes 4. The tensioning structure is a tensioning rope 5 that passes continuously through the threaded holes 4 and connects all the inflatable airbags 2 in series. The tensioning rope 5 connects the inflatable airbags 2 in series through the threaded holes 4, tightens the inflatable airbags 2, and after tightening, it fits with the threaded holes 4 made of high-strength alloy to tightly tension the protective device on the rotor blades.

[0030] In a preferred embodiment of this invention, to prevent the protective device from coming apart after the tension rope 5 slackens, a locking structure is connected to the tension rope 5 to prevent it from being pulled along the threaded hole 4.

[0031] like Figure 2 , Figure 4 and Figure 5 As shown. The rope locking structure is a rope locking bolt 7. The rope locking bolt 7 has a connecting hole on its axis for the tension rope 5 to pass through. A friction pad 8 is connected to the end wall of the rope locking bolt 7. The friction pad 8 is cylindrical. The threaded hole 4 is a conical hole. The friction pad 8 is threadedly connected to the threaded hole 4. The friction pad 8 has slots evenly arranged around its axis. First, when the tension rope 5 passes through the threaded hole 4, the tension rope 5 is passed through the corresponding rope locking bolt 7. After the end of the tension rope 5 is fixed, the friction pad 8 on the rope locking bolt 7 is screwed into the threaded hole 4. The friction pad 8 is squeezed inward during the process of being screwed into the conical threaded hole 4, which squeezes the tension rope 5 and achieves auxiliary fixation of the tension rope 5.

[0032] In a preferred embodiment of this utility model, to enhance the friction between the friction pad 8 and the tension rope 5 and improve the stability of the tension rope 5 after it is fixed, a friction layer is provided on the inner sidewall of the friction pad 8.

[0033] like Figure 2 As shown, to achieve uniform connection of the inflatable airbags 2 and ensure connection stability, the threaded holes 4 are equidistantly distributed at both ends of the inflatable airbags 2 along the vertical direction. Three tension ropes 5 are used to connect all the inflatable airbags 2.

[0034] In a preferred embodiment of this utility model, to facilitate the connection of the inflatable airbags 2 to form a ring-shaped protective structure, the inflatable airbags 2 form an arc-shaped plate structure in the inflated state.

[0035] like Figure 2 As shown. An air nozzle 3 is installed on the inflatable airbag 2, and a pressure gauge is installed on the connecting air tube between the air nozzle 3 and the inflatable airbag 2. The inflation device uses a portable air pump and a pressure regulating valve. The air nozzle 3 is connected to the output end of the inflation device to inflate the inflatable airbag 2, causing it to expand rapidly and form a stable protective structure.

[0036] As a preferred embodiment of this utility model, the inflatable airbag 2 is made of polyurethane-coated fabric. The polyurethane-coated fabric enhances the fire resistance and high-temperature resistance of the inflatable airbag 2.

Claims

1. An inflatable runner blade safety guard characterized by: The application relates to an air bag (2) comprising a continuous splicing connection to form a ring-shaped protection structure, wherein a tensioning structure is arranged in the ring-shaped protection structure and connected between the air bags (2).

2. An inflatable runner blade safety guard as claimed in claim 1, wherein: Magic tapes (6) for connection are arranged between the connecting ends of adjacent air bags (2) and are equidistantly distributed in the vertical direction.

3. An inflatable runner blade safety guard as claimed in claim 1, wherein: Threaded holes (4) are arranged at the two ends of the air bags (2), and the tensioning structure is a tensioning rope (5) continuously penetrating the threaded holes (4) and connecting all the air bags (2) in series.

4. An inflatable runner blade guard as claimed in claim 3, wherein: A lock rope structure is connected to the tensioning rope (5) to prevent the tensioning rope (5) from being pulled out of the threaded holes (4).

5. An inflatable runner blade safety guard as claimed in claim 4, wherein: The lock rope structure is a lock rope bolt (7), the axial center of the lock rope bolt (7) is provided with a connecting hole for the tensioning rope (5) to penetrate, a friction pad (8) is connected to the end wall of the lock rope bolt (7), the friction pad (8) is in a cylindrical shape, the threaded hole (4) is a tapered hole, the friction pad (8) is threadedly connected with the threaded hole (4), and the friction pad (8) is uniformly provided with a slot around an axis.

6. An inflatable runner blade safety guard as claimed in claim 5, wherein: A friction layer is arranged on the inner side wall of the friction pad (8).

7. An inflatable runner blade guard as claimed in claim 3, wherein: The threaded holes (4) are equidistantly distributed at the two ends of the air bags (2) in the vertical direction.

8. An inflatable runner blade safety guard as claimed in claim 4, wherein: The air bags (2) are in an arc-shaped plate structure in the inflated state.

9. An inflatable runner blade safety guard as claimed in claim 1, wherein: An air cock (3) is arranged on the air bag (2), and an air pressure gauge is arranged on the connecting air pipe between the air cock (3) and the air bag (2).

10. An inflatable runner blade safety guard as claimed in claim 1, wherein: The air bag (2) is sewn by using a polyurethane coating fabric.

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