Segmented connected draft tube towing hook of water turbine
By splitting the traction hook of the water turbine tailpipe into multiple sections and using threaded connections, the material is changed to aluminum alloy, the problem of time-consuming, labor-intensive and heavy weight of the traction hook in the existing technology is solved, and convenient transportation and installation is achieved, improving Work efficiency.
Patent Information
- Application Number
- CN202421103050.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing turbine tailpipe traction hooks are long in overall length and are made of stainless steel, and cannot be disassembled in the welding form, which makes disassembly and assembly time-consuming and labor-intensive, and heavy, making it difficult to easily carry in the underground factory of the hydropower station.
A traction hook connected in segments was designed. By splitting the traction hook into multiple segments and using threaded connections, the material was changed to high-strength aluminum alloy with a length of 2 meters. Each section of the traction arm is passed through a threaded sleeve and a threaded thread. Connection, the front end traction hook is changed to a threaded connection for easy transportation and installation.
It realizes convenient transportation and installation of traction hooks, reduces manpower and improves work efficiency, and facilitates replacement of different forms of traction hooks through threaded connections to meet on-site needs.
Smart Images
Figure CN222208145U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of towing hooks, and in particular to a turbine tailwater pipe towing hook connected in sections. Background Art
[0002] When building a maintenance platform in the tailwater pipe of a turbine, a towing hook must be installed in advance in the tailwater pipe to ensure the safety of the workers. The towing hook must be tied and fixed to the fixed guide vane during installation, and then lowered along the runner blade flow path to the inner wall of the tailwater pipe. The worker extends the towing hook from the entrance of the cone pipe to the opposite tailwater pipe wall to hook the towing hook, and then pulls the towing hook to the outside of the cone pipe entrance and fixes it before use.
[0003] The existing turbine tailwater pipe traction hook is made of multiple stainless steel pipes welded or tied together, and the front traction hook is welded to the top of the stainless steel pipe. Its disadvantages are: the overall length is long, the welding form cannot be disassembled, or the binding form is time-consuming and labor-intensive to disassemble and assemble each time, and the material is stainless steel and the overall weight is heavy. During the inspection and transportation of the unit in the underground powerhouse of the hydropower station, it is difficult to transport it in stairs and some narrow spaces, and usually 2-3 people are required to carry it together. Utility Model Content
[0004] The purpose of this application is to overcome the existing technical defects and provide a segmented-connected turbine tailwater pipe towing hook, which is formed by splitting the towing hook from the original welding assembly or binding assembly into 4 sections, and adopting a threaded connection in the middle. It has the characteristics of easy transportation, quick and simple installation, easy storage, and can reduce the manpower required during the transportation process.
[0005] The purpose of this application is achieved through the following technical solutions:
[0006] In the first aspect, the present application proposes a segmented-connected turbine tailwater pipe traction hook, the traction hook comprising a traction head, a first traction arm, a second traction arm, a third traction arm and a fourth traction arm, the traction head is connected to the first traction arm by threads, and the first traction arm, the second traction arm, the third traction arm and the fourth traction arm are connected to each other by threads in sequence.
[0007] In a possible implementation manner, the traction head is a hook-shaped structure.
[0008] In a possible implementation manner, the first traction arm, the second traction arm, the third traction arm, and the fourth traction arm are made of aluminum alloy.
[0009] In a possible implementation manner, the lengths of the first traction arm, the second traction arm, the third traction arm, and the fourth traction arm are all 2 meters.
[0010] In a possible implementation manner, a threaded sleeve is disposed inside one end of the first traction arm, the second traction arm, the third traction arm, and the fourth traction arm, and a stud matching the threaded sleeve is disposed at the other end.
[0011] In a possible implementation manner, a thread is provided at the end of the traction head.
[0012] In a possible implementation manner, a safety buckle and a reset spring are further provided on the traction head, and the safety buckle and the reset spring are both riveted to the traction head.
[0013] In a possible implementation manner, a spherical body is further provided at the end of the traction head.
[0014] In a possible implementation manner, a ring is provided at the end of the fourth traction arm.
[0015] In a possible implementation manner, the ring is made of aluminum alloy.
[0016] The above-mentioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) options and other options can also be freely combined. After understanding the scheme of the present application, those skilled in the art can understand that there are multiple combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here.
[0017] The present application discloses a segmented connected turbine tailwater pipe towing hook, the towing hook comprises a towing head, a first towing arm, a second towing arm, a third towing arm and a fourth towing arm, the towing head is connected to the first towing arm by threads, and the first towing arm, the second towing arm, the third towing arm and the fourth towing arm are connected to each other by threads in sequence. By splitting the towing hook from the original welding assembly or binding assembly form into multiple sections, the middle is connected by threads, which has the characteristics of easy transportation, quick and simple installation, easy storage, and can reduce the manpower required during transportation. In addition, the towing hook at the front end is changed from welding to threaded connection, and different forms of towing hooks can be replaced according to the on-site conditions during use to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1A schematic structural diagram of a turbine tailwater tube traction hook connected in sections proposed in an embodiment of the present application is shown.
[0020] Figure 2 A schematic structural diagram of a traction head proposed in an embodiment of the present application is shown.
[0021] Figure 3 A schematic diagram of a traction arm proposed in an embodiment of the present application is shown.
[0022] Icon: 1- traction head; 2- first traction arm; 3- second traction arm; 4- third traction arm; 5- fourth traction arm. DETAILED DESCRIPTION
[0023] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0024] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.
[0025] In the prior art, the traction hook of the tailwater pipe of the turbine is welded or tied together by multiple stainless steel pipes, and the front traction hook is welded to the top of the stainless steel pipe. Its disadvantages are: the overall length is relatively long, the welding form cannot be disassembled, or the binding form is time-consuming and labor-intensive to disassemble and assemble each time, and the material is stainless steel and the overall weight is relatively heavy. During the inspection and transportation of the unit in the underground powerhouse of the hydropower station, it is difficult to transport it in stairs and some narrow spaces, and usually 2-3 people are required to carry it together.
[0026] Therefore, in order to facilitate transportation, quick installation, and convenient storage during use, and to solve the above-mentioned problems at the same time, the embodiment of the present application proposes a segmented connection of a turbine tailwater pipe towing hook, which is divided into multiple sections by the towing hook from the original welding assembly or binding assembly form, and the middle is connected by threads, which is convenient for transportation, quick and simple to install, easy to store, and can reduce the manpower required during transportation. In addition, the towing hook at the front end is changed from welding to threaded connection, and different forms of towing hooks can be replaced according to the on-site conditions during use to improve work efficiency, which is described in detail below.
[0027] Please refer to Figure 1 , Figure 1A schematic structural diagram of a segmented turbine tailwater pipe traction hook proposed in an embodiment of the present application is shown. In addition to being used for traction lifelines for maintenance in tailwater pipes of units in underground powerhouses of hydropower stations, the traction hook can also be used in various places where ropes need to be pulled. The traction hook includes a traction head 1, a first traction arm 2, a second traction arm 3, a third traction arm 4 and a fourth traction arm 5. The traction head 1 is connected to the first traction arm 2 by threads, and the first traction arm 2, the second traction arm 3, the third traction arm 4 and the fourth traction arm 5 are connected in sequence by threads.
[0028] In a possible implementation, the traction head 1 is a hook-shaped structure.
[0029] Figure 2 A schematic structural diagram of a traction head proposed in an embodiment of the present application is shown. The function of the traction head 1 is to extend from the cone pipe entrance door to the opposite tailwater pipe wall to hook the lifeline, and the lifeline is pulled to the outside of the cone pipe entrance door and fixed for use. A threaded structure is provided at the end of the traction head 1.
[0030] In a possible implementation manner, the first traction arm 2 , the second traction arm 3 , the third traction arm 4 , and the fourth traction arm 5 are made of aluminum alloy.
[0031] The present application provides multiple traction arms including a first traction arm 2, a second traction arm 3, a third traction arm 4 and a fourth traction arm 5, and changes the material from stainless steel to high-strength aluminum alloy. The overall weight is about 1 / 3 of the original, which saves labor for handling and makes the entire traction hook lighter.
[0032] In a possible implementation manner, the lengths of the first traction arm 2 , the second traction arm 3 , the third traction arm 4 and the fourth traction arm 5 are all 2 meters.
[0033] Setting each traction arm to 2 meters is based on the actual application scenario. In addition, each traction arm can also be set according to your own needs.
[0034] In a possible implementation manner, a threaded sleeve is disposed inside one end of the first traction arm 2 , the second traction arm 3 , the third traction arm 4 and the fourth traction arm 5 , and a traction arm matching the threaded sleeve is disposed at the other end.
[0035] Figure 3 A schematic diagram of the traction arm proposed in an embodiment of the present application is shown, wherein four high-strength aluminum alloy tubes are connected as a whole through their own threads, and the first traction arm 2 and the second traction arm 3, the second traction arm 3 and the third traction arm 4, and the third traction arm 4 and the fourth traction arm 5 are connected as a whole through the threaded sleeve of the previous traction arm and the stud of the next traction arm, which has the characteristics of quick and simple installation and convenient storage.
[0036] It is worth noting that the number of traction arms in the embodiment of the present application can also be increased or decreased according to the actual application scenario and can be set by oneself.
[0037] In a possible implementation, a threaded structure is provided at the end of the traction head 1 .
[0038] The traction hook is also threadedly connected to the high-strength aluminum alloy tube (first traction arm) at the front end to form a complete lifeline traction hook in the tailwater pipe of the turbine. The traction head 1 is changed from welding to threaded connection. Different forms of traction heads 1 can be replaced according to on-site conditions during use to improve work efficiency.
[0039] In a possible implementation manner, a safety buckle and a reset spring are further provided on the traction hook, and the safety buckle and the reset spring are riveted to the traction head 1 .
[0040] In order to ensure that the towing hook will not fall off, a safety buckle and a reset spring are provided. The safety buckle is used to buckle the notch of the hook-shaped structure, and the reset spring is used to keep the safety buckle in its original position. The towing hook proposed in the embodiment of the present application can be hooked only by pressing the safety buckle, and the space at the opening of the hook can be fully utilized. When the towing hook proposed in the embodiment of the present application is unhooked, it is necessary to press the safety buckle into the hook with the thumb to complete the unhooking. Due to the action of the reset spring, it will automatically reset when the hooking or unhooking is completed.
[0041] In a possible implementation, a spherical body is further provided at the end of the traction head 1 .
[0042] The spherical body is arranged at the end of the traction head 1 to ensure that the traction hook will not fall off. The diameter of the tubular object to be hooked by the hook is estimated in advance, and the gap formed by the spherical body and the traction head is just equal to the diameter of the hooked tubular object, so that the traction hook can be ensured not to fall off. In addition, the spherical body in the embodiment of the present application can also cooperate with the safety buckle and the reset spring to ensure that the traction hook will not fall off.
[0043] In a possible implementation manner, a ring is provided at the end of the fourth traction arm 5 .
[0044] In a possible implementation manner, the ring is made of aluminum alloy.
[0045] The purpose of providing a ring at the end of the fourth traction arm 5 is to enable the traction hook to be connected to the staff, and the staff can use a rope to connect the ring to the traction hook. The ring is made of aluminum alloy, which makes it not only light but also stronger.
[0046] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0047] First, the lifeline towing hook is split into 4 sections from the original integral welding for easy transportation.
[0048] Second, high-strength aluminum alloy tubes are connected by threads, which makes installation quick and easy and storage convenient.
[0049] Third, the material is high-strength aluminum alloy, the weight is about 1 / 3 of the original, saving labor in handling.
[0050] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A segmented connected turbine tailwater tube traction hook, characterized in that: The traction hook comprises a traction head, a first traction arm, a second traction arm, a third traction arm and a fourth traction arm. The traction head is connected to the first traction arm through threads, and the first traction arm, the second traction arm, the third traction arm and the fourth traction arm are connected to each other through threads in sequence.
2. The turbine draft tube traction hook according to claim 1, characterized in that: The traction head is a hook-shaped structure.
3. The turbine draft tube traction hook according to claim 1, characterized in that: The first traction arm, the second traction arm, the third traction arm and the fourth traction arm are made of aluminum alloy.
4. The turbine draft tube traction hook according to claim 1, characterized in that: The lengths of the first traction arm, the second traction arm, the third traction arm and the fourth traction arm are all 2 meters.
5. The turbine draft tube traction hook according to claim 1, characterized in that: A threaded sleeve is arranged inside one end of the first traction arm, the second traction arm, the third traction arm and the fourth traction arm, and a stud matching the threaded sleeve is arranged at the other end.
6. The water turbine draft tube traction hook according to claim 1, characterized in that: The end of the traction head is provided with a thread.
7. The water turbine draft tube traction hook according to claim 1, characterized in that: The traction head is also provided with a safety buckle and a return spring, and the safety buckle and the return spring are riveted to the traction head.
8. The turbine draft tube traction hook according to claim 1, characterized in that: The end of the traction head is also provided with a spherical body.
9. The water turbine draft tube traction hook according to claim 1, characterized in that: A circular ring is arranged at the end of the fourth traction arm.
10. The turbine draft tube traction hook according to claim 9, characterized in that: The material of the ring is aluminum alloy.