Device for preventing oil gas of oil basin of water turbine from leaking

Abstract

The utility model relates to the technical field of water turbines, in particular to a device for preventing oil gas of an oil basin of a water turbine from leaking. The device comprises two oil basins and a rotating shaft arranged between the two oil basins, covers are arranged above the two oil basins, protective shells are arranged on the circumferential sides of the two oil basins, the upper end of one protective shell is fixedly connected with a gas storage pipe, one side of the gas storage pipe is fixedly connected with a gas outlet pipe, and the other side of the gas outlet pipe is fixedly connected with a gas outlet pipe. The circumferential inner wall of the gas storage pipe is slidably connected with a piston, a reciprocating mechanism is arranged on one side of the piston and comprises a double-face rack and two half gears, the double-face rack is fixedly connected to one side of the piston, and the reciprocating mechanism, the gas storage pipe, the gas outlet pipe and the protective shell are matched. Oil gas generated in the oil basin can be sucked into the gas storage pipe to be stored, and leakage of the oil gas in the oil basin is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to a device for preventing oil and gas leakage from a water turbine oil basin. 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] When the turbine is operating for a long time, the temperature inside the turbine is too high, and the lubricating oil in the oil pan is prone to produce oil gas. The existing oil pan sealing method generally adopts fixed gap seal, packing seal, etc. for sealing, and its sealing effect is poor. The leakage of oil and gas causes the oil in the oil pan to be consumed too quickly. Repeated replenishment of lubricating oil for a long time is likely to affect the normal operation of the turbine group. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a device for preventing oil and gas from leaking out of a turbine oil basin, which has the effect of collecting oil and gas and reducing the leakage of oil and gas to the outside.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A device for preventing oil and gas leakage from a turbine oil pan comprises two oil pans and a rotating shaft arranged between the two oil pans, covers are arranged above the two oil pans, and protective shells are arranged on the circumferential sides of the two oil pans, an upper end of one of the protective shells is fixedly connected to an air storage pipe, one side of the air storage pipe is fixedly connected to an air outlet pipe, and the air outlet pipe movably passes through the lower end of one of the covers, a piston is slidably connected to the circumferential inner wall of the air storage pipe, a reciprocating mechanism is arranged on one side of the piston, the reciprocating mechanism comprises a double-sided rack and two half gears, the double-sided rack is fixedly connected to one side of the piston, the two half gears are arranged above the protective shell, and the two half gears are intermittently meshed with the double-sided rack.

[0007] By adopting the above technical solution, the reciprocating mechanism, the gas storage pipe, the gas outlet pipe and the protective shell cooperate to absorb the oil and gas generated in the oil basin into the gas storage pipe for storage, thereby preventing the oil and gas in the oil basin from leaking out.

[0008] In a preferred example, the utility model can be further configured as follows: a driving mechanism is arranged below the two half-gears, the driving mechanism includes two pulleys, a motor and a belt, the upper end of the protective shell is fixedly connected to a mounting frame, the motor is fixedly connected to the upper end of the mounting frame, one of the pulleys is fixedly connected to the output end of the motor, and the other pulley is rotatably connected to the upper end of the mounting frame, the belt drive is connected to the circumferential sides of the two pulleys, and the two half-gears are fixedly connected to the upper ends of the two pulleys, respectively.

[0009] By adopting the above technical solution, the driving mechanism can drive the two half gears to rotate.

[0010] In a preferred example, the utility model can be further configured as follows: a mounting groove is provided on the circumferential side of the gas storage pipe, a filter is provided on the circumferential side wall of the gas storage pipe, an oil inlet pipe is fixedly connected to one side of the filter, and the oil inlet pipe passes through the lower end of one of the covers.

[0011] By adopting the above technical solution, the filter can filter the oil and gas in the gas storage pipe.

[0012] In a preferred example, the utility model can be further configured as follows: a second sealing half-circle is fixedly connected to one side of the two covers and the two oil pans, spring grooves are opened in the four second sealing half-circles, and four springs are fixedly connected between the side walls of the four spring grooves.

[0013] By adopting the above technical solution, the cooperation between the second sealing half ring, the spring groove and the spring can make the second sealing half ring fit the rotating shaft more closely.

[0014] In a preferred example, the utility model can be further configured as follows: the adjacent ends of the two protective shells are fixedly connected with a first sealing half-ring, and the side walls of the mounting grooves are fixedly connected with a first sealing gasket.

[0015] By adopting the above technical solution, the first sealing half ring can improve the sealing between the protective shell and the rotating shaft.

[0016] In a preferred example, the utility model can be further configured as follows: check valves are installed in the oil inlet pipe and the air outlet pipe, and third sealing semi-circles are fixedly connected to both sides of the two oil pans, the two protective shells and the two covers.

[0017] By adopting the above technical solution, the third sealing half ring can improve the sealing performance of the oil pan, the protective shell and the cover.

[0018] In summary, the present invention includes at least one of the following beneficial technical effects:

[0019] 1. A reciprocating mechanism, an air storage pipe, an air outlet pipe, a protective shell, a driving mechanism, an installation groove, a first sealing gasket and an installation groove are provided. The filter is placed in the air storage pipe. The first sealing gasket can improve the sealing between the filter and the installation groove. The motor is started, and the output end of the motor drives the pulley to rotate. The belt drives the two pulleys to rotate. The pulley drives the two half gears to rotate. When one of the half gears rotates on the side with gear teeth, the half gear and the double-sided rack are meshed. The double-sided rack pulls the piston to move to absorb the oil and gas in the oil pan and the protective shell. After the oil and gas enter the air storage pipe, the gas enters the filter. The lubricating oil filtered by the filter re-enters the oil pan through the oil inlet pipe. When the other half gear rotates to the side with gear teeth, the purified oil can be pushed back into the oil pan. The oil and gas generated in the oil pan can be directly sucked into the air storage pipe for storage to prevent the oil and gas in the oil pan from leaking to the outside, and then re-added to the oil pan through filtration to reduce the consumption of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a stereogram of this embodiment;

[0021] Figure 2 is a three-dimensional cross-sectional view of this embodiment;

[0022] Figure 3 This embodiment Figure 2 The enlarged view of point A in the middle;

[0023] Figure 4 This embodiment Figure 3 Enlarged view of point B in the middle.

[0024] In the figure, 1. oil pan; 2. rotating shaft; 3. protective shell; 4. air storage pipe; 5. mounting groove; 6. first sealing gasket; 7. filter; 8. oil inlet pipe; 9. cover; 10. first sealing half circle; 11. mounting frame; 12. reciprocating mechanism; 1201. half gear; 1202. double-sided rack; 13. driving mechanism; 1301. pulley; 1302. motor; 1303. belt; 14. air outlet pipe; 15. check valve; 16. piston; 17. second sealing half circle; 18. spring groove; 19. spring; 20. third sealing half circle. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings. Example

[0026] Reference Figure 1-4The utility model discloses a device for preventing oil and gas leakage from a turbine oil pan, comprising two oil pans 1 and a rotating shaft 2 arranged between the two oil pans 1, covers 9 are arranged above the two oil pans 1, protective shells 3 are arranged on the circumferential sides of the two oil pans 1, an upper end of one of the protective shells 3 is fixedly connected with an air storage pipe 4, one side of the air storage pipe 4 is fixedly connected with an air outlet pipe 14, and the air outlet pipe 14 movably passes through the lower end of one of the covers 9, a piston 16 is slidably connected to the circumferential inner wall of the air storage pipe 4, a reciprocating mechanism 12 is arranged on one side of the piston 16, the reciprocating mechanism 12 comprises a double-sided rack 1202 and two half gears 1201, the double-sided rack 1202 is fixedly connected to one side of the piston 16, the two half gears 1201 are arranged above the protective shell 3, and the two half gears 1201 are intermittently meshed with the double-sided rack 1202, a filter 7 is placed in the air storage pipe 4, and a first sealing gasket 6 can be Improve the sealing between the filter 7 and the mounting groove 5, start the motor 1302, the output end of the motor 1302 drives the pulley 1301 to rotate, the belt 1303 drives the two pulleys 1301 to rotate, the pulley 1301 drives the two half gears 1201 to rotate, when one of the half gears 1201 rotates the side with gear teeth, the half gear 1201 and the double-sided rack 1202 are meshed, the double-sided rack 1202 pulls the piston 16 to move to absorb the oil and gas in the oil pan 1 and the protective shell 3, after the oil and gas enter the gas storage pipe 4, the gas enters the filter 7, and the lubricating oil filtered by the filter 7 re-enters the oil pan 1 through the oil inlet pipe 8, when the other half gear 1201 rotates to the side with gear teeth, it can push the purified oil to re-enter the oil pan 1, and the oil and gas generated in the oil pan 1 can be sucked into the gas storage pipe 4 for storage, so as to prevent the oil and gas in the oil pan 1 from leaking out.

[0027] A driving mechanism 13 is arranged below the two half gears 1201, and the driving mechanism 13 includes two pulleys 1301, a motor 1302 and a belt 1303. The upper end of the protective shell 3 is fixedly connected to the mounting frame 11, and the motor 1302 is fixedly connected to the upper end of the mounting frame 11, wherein one of the pulleys 1301 is fixedly connected to the output end of the motor 1302, and the other pulley 1301 is rotatably connected to the upper end of the mounting frame 11, and the belt 1303 is transmission-connected to the circumferential sides of the two pulleys 1301, and the two half gears 1201 are respectively fixedly connected to the upper ends of the two pulleys 1301, and the driving mechanism 13 can drive the two half gears 1201 to rotate.

[0028] An installation groove 5 is provided on the circumferential side of the air storage pipe 4, and a filter 7 is provided on the circumferential side wall of the air storage pipe 4. An oil inlet pipe 8 is fixedly connected to one side of the filter 7, and the oil inlet pipe 8 runs through the lower end of one of the covers 9. Preferably, branch pipes are provided on both sides of the filter 7. The piston 16 can suck the oil and gas in the oil pan 1 into the air storage pipe 4 through the branch pipe and the air outlet pipe 14 and filter it through the filter 7. An oil storage box is provided below the filter 7, and the filtered lubricating oil enters the oil storage box. One side of the oil storage box is connected to the oil inlet pipe 8, and a pressurizing pipe is provided on the other side of the oil storage box. The piston 16 moves to pressurize the oil storage box, and the filtered lubricating oil in the oil storage box is added to the oil pan 1 from the oil inlet pipe 8.

[0029] A second sealing half-ring 17 is fixedly connected to one side of the two covers 9 and the two oil pans 1. Spring grooves 18 are provided in the four second sealing half-rings 17. Four springs 19 are fixedly connected between the side walls of the four spring grooves 18. The cooperation of the second sealing half-ring 17, the spring groove 18 and the spring 19 can make the second sealing half-ring 17 fit the rotating shaft 2 more closely.

[0030] The adjacent ends of the two protective shells 3 are fixedly connected with a first sealing half ring 10 , and the side walls of the mounting groove 5 are fixedly connected with a first sealing gasket 6 . The first sealing half ring 10 can improve the sealing between the protective shell 3 and the rotating shaft 2 .

[0031] A check valve 15 is installed in the oil inlet pipe 8 and the air outlet pipe 14. The check valve 15 can prevent the oil inlet pipe 8 from absorbing lubricating oil from the oil pan 1, and can also prevent oil and gas from leaving the air storage pipe 4 through the air outlet pipe 14. The two sides of the two oil pans 1, the two protective shells 3 and the two covers 9 are fixedly connected with a third sealing half circle 20. The third sealing half circle 20 can improve the sealing of the oil pan 1, the protective shell 3 and the cover 9.

[0032] The implementation principle of the above embodiment is as follows: the filter 7 is placed in the gas storage pipe 4, the first sealing gasket 6 can improve the sealing between the filter 7 and the mounting groove 5, the motor 1302 is started, the output end of the motor 1302 drives the pulley 1301 to rotate, the belt 1303 drives the two pulleys 1301 to rotate, the pulley 1301 drives the two half gears 1201 to rotate, when one of the half gears 1201 rotates the side with gear teeth, the half gear 1201 and the double-sided rack 1202 are meshed, the double-sided rack 1202 pulls the piston 16 to move to absorb the oil and gas in the oil pan 1 and the protective shell 3, after the oil and gas enter the gas storage pipe 4, the gas enters the filter 7, and the lubricating oil filtered by the filter 7 re-enters the oil pan 1 through the oil inlet pipe 8, when the other half gear 1201 rotates to the side with gear teeth, it can push the purified oil to re-enter the oil pan 1, and the oil and gas generated in the oil pan 1 can be sucked into the gas storage pipe 4 for storage, so as to prevent the oil and gas in the oil pan 1 from leaking out.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for preventing oil and gas leakage from a turbine oil pan, comprising two oil pans (1) and a rotating shaft (2) arranged between the two oil pans (1), characterized in that: A cover (9) is provided above the two oil pans (1), and a protective shell (3) is provided on the circumferential side of the two oil pans (1); an air storage pipe (4) is fixedly connected to the upper end of one of the protective shells (3); an air outlet pipe (14) is fixedly connected to one side of the air storage pipe (4), and the air outlet pipe (14) movably passes through the lower end of one of the covers (9); a piston (16) is slidably connected to the circumferential inner wall of the air storage pipe (4); a reciprocating mechanism (12) is provided on one side of the piston (16); the reciprocating mechanism (12) comprises a double-sided rack (1202) and two half gears (1201); the double-sided rack (1202) is fixedly connected to one side of the piston (16); the two half gears (1201) are both provided above the protective shell (3), and the two half gears (1201) are intermittently meshed with the double-sided rack (1202).

2. The device for preventing oil and gas leakage from the turbine oil basin according to claim 1, characterized in that: A driving mechanism (13) is arranged below the two half gears (1201), the driving mechanism (13) comprising two pulleys (1301), a motor (1302) and a belt (1303); the upper end of the protective shell (3) is fixedly connected to a mounting frame (11); the motor (1302) is fixedly connected to the upper end of the mounting frame (11); one of the pulleys (1301) is fixedly connected to the output end of the motor (1302); the other pulley (1301) is rotatably connected to the upper end of the mounting frame (11); the belt (1303) is transmission-connected to the circumferential sides of the two pulleys (1301); and the two half gears (1201) are respectively fixedly connected to the upper ends of the two pulleys (1301).

3. The device for preventing oil and gas leakage from the turbine oil basin according to claim 1, characterized in that: A mounting groove (5) is provided on the circumferential side of the gas storage pipe (4), a filter (7) is provided on the circumferential side wall of the gas storage pipe (4), an oil inlet pipe (8) is fixedly connected to one side of the filter (7), and the oil inlet pipe (8) passes through the lower end of one of the covers (9).

4. The device for preventing oil and gas leakage from a turbine oil basin according to claim 1, characterized in that: A second sealing half ring (17) is fixedly connected to one side of the two covers (9) and the two oil pans (1), a spring groove (18) is provided in each of the four second sealing half rings (17), and four springs (19) are fixedly connected between the side walls of the four spring grooves (18).

5. The device for preventing oil and gas leakage from the turbine oil basin according to claim 3, characterized in that: The adjacent ends of the two protective shells (3) are both fixedly connected with a first sealing half ring (10), and the side walls of the installation groove (5) are both fixedly connected with a first sealing gasket (6).

6. The device for preventing oil and gas leakage from the turbine oil basin according to claim 3, characterized in that: A check valve (15) is installed in each of the oil inlet pipe (8) and the air outlet pipe (14), and a third sealing half ring (20) is fixedly connected to both sides of the two oil pans (1), the two protective shells (3) and the two covers (9).

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