Water leakage shielding device for main shaft seal of cross-flow horizontal water turbine

Abstract

The utility model discloses a cross-flow horizontal water turbine main shaft seal water leakage shielding device, which belongs to the technical field of water turbines and comprises a main shaft body, a unit front cone is arranged on the surface of the main shaft body, a fastening bolt is arranged at one end of the unit front cone, and a connecting frame is arranged on one side of the fastening bolt. A fixing support is arranged in the unit front cone, a water tank body is arranged on one side of the fixing support, a rotating support is arranged on one side of the bottom end of the water tank body, a water tank water leakage point is arranged at the bottom end of the side, close to the rotating support, of the water tank body, and a water retaining panel is arranged on the side, away from the rotating support, of the water tank body. A connecting rod is arranged on one side of the water retaining panel; flat iron is arranged on one side of the bottom end of the connecting rod; through the arrangement of the water retaining panel and the connecting rod, splashing water flow can be completely shielded and climbs along the main shaft body, the water flow continues to climb on the main shaft body along the gap of the flat iron, and the water flow climbs to the water retaining ring and is stopped from climbing.

Description

Technical Field

[0001] The utility model belongs to the technical field of water turbines, and in particular relates to a water leakage shielding device for main shaft seal of a cross-flow horizontal water turbine. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. It belongs to the category of turbine machinery in fluid machinery. As early as around 100 BC, the prototype of a water turbine, the water wheel, appeared in China, which was used for irrigation and driving grain processing equipment. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, water from an upstream reservoir is led to the water turbine through a water diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tailwater pipe. The higher the water head and the greater the flow rate, the greater the output power of the water turbine.

[0003] The packing seals and polyethylene PTFE sheet seals currently used for the main shaft seals of tubular turbine units in river basins with high sand content cannot completely prevent water seepage in the main shaft seals, especially during the flood season when the sand content of the Yellow River increases, which greatly reduces the service life of the main shaft seals. Therefore, the main shaft seals must be replaced at most once every six months to prevent water from leaking into the lubricating oil system along the main shaft and causing unstable operation of the unit. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a water leakage shielding device for main shaft seal of a throughflow horizontal turbine, which has the characteristics of good water leakage blocking effect, shielding splashing water flow and preventing water flow from entering the lubricating oil system.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water leakage shielding device for the main shaft seal of a cross-flow horizontal turbine, comprising a main shaft body, a unit front cone is arranged on the surface of the main shaft body, a fastening bolt is arranged at one end of the unit front cone, a connecting frame is arranged on one side of the fastening bolt, a fixed bracket is arranged inside the unit front cone, a water tank body is arranged on one side of the fixed bracket, a rotating bracket is arranged on one side of the bottom end of the water tank body, a water tank leakage point is arranged on the bottom end of the side of the water tank body close to the rotating bracket, a water retaining panel is arranged on the side of the water tank body away from the rotating bracket, a connecting rod is arranged on one side of the water retaining panel, and a flat iron is arranged on one side of the bottom end of the connecting rod.

[0006] Preferably, a water retaining ring is provided on the surface of the main shaft body, a sealant is provided between the water retaining ring and the main shaft body, and a water guide bearing support is provided on one side of the water retaining ring.

[0007] Preferably, one end of the rotating bracket is mounted on the surface of the main shaft body by a fixing bolt.

[0008] Preferably, the water retaining ring is fixed to the surface of the main shaft body by brazing, and a gap is provided between the water guide bearing support and the main shaft body.

[0009] Preferably, the fixing bracket is installed inside the front cone of the unit through fixing bolts, and the water tank body is installed on one side of the fixing bracket through limiting bolts.

[0010] Preferably, the water retaining panel is made of rubber, and its cross section is set to be semicircular.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses to be provided with water retaining panel and connecting rod, can completely block the splashing water flow and crawl along the main shaft body, the water flow continues to crawl in the main shaft body along the gap of flat iron, the water flow crawls to the water retaining ring, is blocked from crawling, and is coated with sealant at the same time, completely blocks the crawling water flow to the gap between the water guide bearing support and the main shaft body, avoids the water flow from entering the water guide lubricating oil system, ensures the safe and stable operation of the unit, prolongs the service life of the equipment, reduces the maintenance frequency, saves human resources, and improves the working quality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0015] In the figure: 1. front cone of the unit; 2. water tank body; 3. fixed bracket; 4. rotating bracket; 5. main shaft body; 6. water leakage point of the water tank; 7. water retaining panel; 8. connecting rod; 9. flat iron; 10. water guide bearing support; 11. water retaining ring; 12. sealant; 13. fastening bolts; 14. connecting frame. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2The utility model provides the following technical solutions: a water leakage shielding device for the main shaft seal of a cross-flow horizontal turbine, comprising a main shaft body 5, a unit front cone 1 is arranged on the surface of the main shaft body 5, a fastening bolt 13 is arranged at one end of the unit front cone 1, a connecting frame 14 is arranged on one side of the fastening bolt 13, a fixing bracket 3 is arranged inside the unit front cone 1, a water tank body 2 is arranged on one side of the fixing bracket 3, a rotating bracket 4 is arranged on one side of the bottom end of the water tank body 2, a water tank leakage point 6 is arranged on the bottom end of the side of the water tank body 2 close to the rotating bracket 4, a water retaining panel 7 is arranged on the side of the water tank body 2 away from the rotating bracket 4, a connecting rod 8 is arranged on one side of the water retaining panel 7, and a flat iron 9 is arranged on one side of the bottom end of the connecting rod 8.

[0018] Specifically, a water retaining ring 11 is disposed on the surface of the main shaft body 5 , a sealant 12 is disposed between the water retaining ring 11 and the main shaft body 5 , and a water guide bearing support 10 is disposed on one side of the water retaining ring 11 .

[0019] By adopting the above technical solution, the water flows along the surface of the main shaft body 5 to the water retaining ring 11, and is blocked from crawling. At the same time, the sealant 12 is applied to completely block the crawling water flow to the gap between the water-guide bearing support 10 and the main shaft body 5, thereby preventing the water flow from entering the water-guide lubricating oil system and ensuring the safe and stable operation of the unit.

[0020] Specifically, one end of the rotating bracket 4 is mounted on the surface of the main shaft body 5 through a fixing bolt.

[0021] By adopting the above technical solution, the working stability and usage intensity of the equipment are improved.

[0022] Specifically, the water retaining ring 11 is fixed to the surface of the main shaft body 5 by brazing, and a gap is provided between the water guide bearing support 10 and the main shaft body 5 .

[0023] By adopting the above technical solution, the use strength of the water retaining ring 11 is guaranteed and the water retaining effect is improved.

[0024] Specifically, the fixing bracket 3 is installed inside the front cone 1 of the unit through fixing bolts, and the water tank body 2 is installed on one side of the fixing bracket 3 through limiting bolts.

[0025] By adopting the above technical solution, the stability of the use of the water tank body 2 is ensured and the use quality of the equipment is improved.

[0026] Specifically, the water retaining panel 7 is made of rubber, and its cross section is set to be semicircular.

[0027] By adopting the above technical solution, the water retaining effect of the water retaining panel 7 is ensured, the protection quality is improved, and the stability of the equipment operation is guaranteed.

[0028] The working principle and use process of the utility model: when the utility model is in use, the seal of the main shaft body 5 is worn under the normal operation of the unit, resulting in water leakage at the water tank leakage point 6, and the water retaining panel 7 and the connecting rod 8 can completely block the splashing water flow and crawl along the main shaft body 5. The water flow continues to crawl in the main shaft body 5 along the gap of the flat iron 9, and the water flow crawls to the water retaining ring 11 and is blocked from crawling. At the same time, a sealant 12 is applied to completely block the crawling water flow to the gap between the water-guide bearing support 10 and the main shaft body 5, thereby preventing the water flow from entering the water-guide lubricating oil system arranged in the water-guide bearing support 10, ensuring the safe and stable operation of the unit, improving the service life of the equipment, reducing the maintenance frequency, saving human resources, and improving the working quality of the equipment.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water leakage shielding device for main shaft seal of a crossflow horizontal turbine, comprising a main shaft body, characterized in that: A front cone of the unit is arranged on the surface of the main shaft body, a fastening bolt is arranged at one end of the front cone of the unit, a connecting frame is arranged on one side of the fastening bolt, a fixed bracket is arranged inside the front cone of the unit, a water tank body is arranged on one side of the fixed bracket, a rotating bracket is arranged on one side of the bottom end of the water tank body, a water tank leakage point is arranged on the bottom end of the side of the water tank body close to the rotating bracket, a water retaining panel is arranged on the side of the water tank body away from the rotating bracket, a connecting rod is arranged on one side of the water retaining panel, and a flat iron is arranged on one side of the bottom end of the connecting rod.

2. A device for shielding water leakage from main shaft seal of a crossflow horizontal turbine according to claim 1, characterized in that: A water retaining ring is arranged on the surface of the main shaft body, a sealing glue is arranged between the water retaining ring and the main shaft body, and a water guide bearing support is arranged on one side of the water retaining ring.

3. The device for shielding water leakage from main shaft seal of a crossflow horizontal turbine according to claim 1, characterized in that: One end of the rotating bracket is mounted on the surface of the main shaft body through a fixing bolt.

4. The device for shielding water leakage from main shaft seal of a crossflow horizontal turbine according to claim 2, characterized in that: The water retaining ring is fixed on the surface of the main shaft body by brazing, and a gap is arranged between the water guide bearing support and the main shaft body.

5. The device for shielding water leakage from main shaft seal of a crossflow horizontal turbine according to claim 1, characterized in that: The fixing bracket is installed inside the front cone of the unit through fixing bolts, and the water tank body is installed on one side of the fixing bracket through limiting bolts.

6. The device for shielding water leakage from main shaft seal of a crossflow horizontal turbine according to claim 1, characterized in that: The water retaining panel is made of rubber, and its cross section is set to be semicircular.

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