Oil head sleeve dynamic sealing device capable of preventing expansion with heat and contraction with cold

Abstract

The utility model relates to the technical field of oil-supply heads, in particular to an oil-supply head sleeve dynamic sealing device capable of preventing expansion with heat and contraction with cold, which comprises a sleeve main body, a heat exchange box fixedly arranged at the top end of the side surface of the sleeve main body, a water inlet pipe fixedly arranged on the side surface of the heat exchange box, and a water outlet pipe fixedly arranged on the side surface of the heat exchange box, a first water pipe is fixedly arranged at a water inlet of the first water pump, a water storage tank is fixedly arranged at one end of the first water pipe, one side of the first water pump is fixedly connected with one side of the water storage tank, and the other side of the water storage tank is fixedly connected with one end of a water outlet pipe; the device has the advantages that the temperature of the sealing ring at the joint of the sleeve and the upper operation oil pipe can be kept constant, and the situation that the temperature of the sealing ring is too high or too low, so that the sealing ring expands with heat and contracts with cold, and the using effect of the sealing ring is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil receivers, in particular to an oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction. Background Art

[0002] The oil receiver of the hydro-turbine generator set is an important component of the double-regulation unit turbine. Its main function is to introduce the pressure oil from the main pressure regulating valve of the speed control system from the fixed oil pipe into the rotating operating oil pipe, and to transport the pressure oil to the runner servo through the operating oil pipe to control the opening of the runner blades and ensure the safe and efficient operation of the unit. The oil receiver limits the upper operating oil pipe through the sleeve and seals the connection between the sleeve and the upper operating oil pipe through the sealing ring.

[0003] The patent specification with the announcement number CN215486344U discloses an oil receiver sealing device, including an oil receiver sealing device, including an upper shaft of a generator, an oil receiver is arranged on the surface of the upper shaft of the generator, floating shoes are arranged on the upper and lower sides of the oil receiver, an oil-throwing plate is fixedly connected to the bottom of the upper shaft of the generator, a gland is arranged on the top and bottom of the oil receiver, a sleeve is arranged inside the oil receiver, a dumbbell-shaped sealing ring is arranged on the surface of the gland, an upper operating oil pipe is arranged inside the sleeve, and a runner body is arranged at the bottom of the upper operating oil pipe. The oil receiver sealing device reduces wear and tear by arranging floating shoes, glands and dumbbell-shaped sealing rings, and a dumbbell-shaped sealing ring is arranged between the floating shoes and the glands, respectively, to prevent the frequent starting of the unit pressure oil pump caused by wear and tear, and the increase of the pressure oil temperature, which seriously affects the safe operation of the power grid caused by the runner linkage.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned oil receiver sealing device has the following problems: the device seals the connection between the sleeve and the upper operating oil pipe through a sealing ring. When the temperature at the sealing ring is too high, it is easy to cause the sealing ring to expand, which accelerates the wear rate of the sealing ring and reduces the service life of the sealing ring. When the temperature at the sealing ring is too low, the sealing ring is easy to shrink, which reduces the sealing effect of the connection between the sleeve and the upper operating oil pipe. In view of this, a dynamic sealing device for the oil receiver sleeve that can prevent thermal expansion and contraction is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a dynamic sealing device for an oil receiver sleeve which can prevent thermal expansion and contraction.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dynamic sealing device for an oil receiver sleeve that can prevent thermal expansion and contraction, comprising a sleeve body, a heat exchange box is fixedly provided at the top end of the side surface of the sleeve body, a water inlet pipe is fixedly provided on the side surface of the heat exchange box, a water outlet pipe is fixedly provided on the side surface of the heat exchange box, a first water pump is fixedly provided at one end of the water inlet pipe, a first water pipe is fixedly provided at the water inlet of the first water pump, a water storage tank is fixedly provided at one end of the first water pipe, one side of the first water pump is fixedly connected to one side of the water storage tank, the other side of the water storage tank is fixedly connected to one end of the water outlet pipe, a second water pipe is fixedly provided on the side surface of the water storage tank, a second water pump is fixedly provided at one end of the second water pipe, a third water pipe is fixedly provided at the water outlet of the second water pump, a constant temperature heater is fixedly provided at one end of the third water pipe, a fourth water pipe is fixedly provided at the water outlet of the constant temperature heater, and one end of the fourth water pipe is fixedly connected to the side surface of the water storage tank.

[0007] As a further description of the above technical solution: a sealing groove is provided at the top of the sleeve body, and a sealing ring is provided inside the sealing groove, which is convenient for improving the sealing performance of the connection between the sleeve and the upper operating oil pipe.

[0008] As a further description of the above technical solution: an upper operating oil pipe is provided inside the sleeve body.

[0009] As a further description of the above technical solution: a fixing box is fixedly provided on the outside of the heat exchange box, the inside of the fixing box is fixedly connected to the side of the water inlet pipe, and the inside of the fixing box is fixedly connected to the side of the water outlet pipe, and the fixing box facilitates fixing the water inlet pipe and the water outlet pipe.

[0010] As a further description of the above technical solution: a water injection pipe is fixedly provided on the top of the water tank, a drainage pipe is fixedly provided on one side of the water tank, a sealing plug is provided inside the drainage pipe, the water injection pipe facilitates the injection of water into the water tank, and the drainage pipe facilitates the discharge of water from the water tank.

[0011] As a further description of the above technical solution: a motor is fixedly provided on the side of the water tank, and the side of the motor drive shaft is rotatably connected to the side of the water tank through a sealed bearing, so that the motor can easily drive the rotating rod to rotate.

[0012] As a further description of the above technical solution: a rotating rod is fixedly provided at one end of the motor transmission shaft, and one end of the rotating rod is rotatably connected to the inside of the water tank, so that the rotating rod can drive the stirring plate to rotate.

[0013] As a further description of the above technical solution: a plurality of stirring plates are fixedly provided on the side of the rotating rod, two reinforcing rods are fixedly provided on the sides of the plurality of stirring plates, one end of the plurality of reinforcing rods is fixedly connected to the side of the rotating rod, and the stirring plates facilitate accelerating the heat exchange rate of the water in the water tank.

[0014] The utility model has the following beneficial effects:

[0015] The utility model is designed to provide a dynamic sealing device for an oil receiver sleeve that can prevent thermal expansion and contraction. Through design and coordination, water inside the water tank is pumped out by a second water pump, so that the water enters the constant temperature heater, the water inside the water tank is heated by the constant temperature heater, and the heated water is discharged into the water tank through a fourth water pipe. When the temperature of the water entering the constant temperature heater is higher than a certain threshold value, the constant temperature heater automatically controls the heating pipe to be turned off. When the temperature of the water in the water tank is lower than the threshold value, the constant temperature heater automatically controls the heating pipe to be turned on, so that the water inside the water tank is kept at a constant temperature. Water in the water tank is pumped out by a first water pump, so that the water in the water tank enters the heat exchange box. When the temperature near the sealing ring is higher than the water temperature in the heat exchange box, the heat near the sealing ring is absorbed by the water in the heat exchange box. When the temperature near the sealing ring is lower than the water temperature in the heat exchange box, the sealing ring is heated by the water in the heat exchange box, so that the temperature of the sealing ring is constant. Therefore, the device is convenient for maintaining the temperature of the sealing ring at the connection between the sleeve and the upper operating oil pipe constant, so as to avoid the sealing ring temperature being too high or too low, which causes the sealing ring to expand or contract, thereby affecting the use effect of the sealing ring.

[0016] The utility model is designed to provide a dynamic sealing device for an oil receiver sleeve which can prevent thermal expansion and contraction. Through design coordination, a transmission shaft of a motor drives a rotating rod to rotate, thereby driving a plurality of stirring plates to rotate. The stability of the stirring plates during rotation is improved by means of a reinforcing rod. By means of the simultaneous rotation of a plurality of stirring plates, the flow rate of water in a water tank is accelerated, thereby accelerating the heat exchange rate of the water in the water tank, making the water temperature in the water tank uniform, thereby making the temperature of water flowing into a constant temperature heater close to the average water temperature of the water tank, and improving the constant temperature effect of the water in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the sleeve body of the utility model;

[0019] Figure 3 It is a schematic diagram of the split structure of the fixed box of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the first water pump of the utility model;

[0021] Figure 5This is a schematic diagram of the installation structure of the stirring plate of the utility model.

[0022] Legend:

[0023] 1. Sleeve body; 2. Heat exchange box; 3. Water inlet pipe; 4. Water outlet pipe; 5. First water pump; 6. First water pipe; 7. Water storage tank; 8. Second water pipe; 9. Second water pump; 10. Third water pipe; 11. Constant temperature heater; 12. Fourth water pipe; 13. Sealing ring; 14. Upper operating oil pipe; 15. Fixing box; 16. Water injection pipe; 17. Drain pipe; 18. Sealing plug; 19. Motor; 20. Rotating rod; 21. Stirring plate; 22. Strengthening rod. DETAILED DESCRIPTION

[0024] Reference Figure 1-Figure 5 The utility model provides a dynamic sealing device for an oil receiver sleeve that can prevent thermal expansion and contraction: it includes a sleeve body 1, a heat exchange box 2 is fixedly provided at the top of the side of the sleeve body 1, the heat exchange box 2 is convenient for exchanging heat with the sealing ring 13 through the water inside, a water inlet pipe 3 is fixedly provided on the side of the heat exchange box 2, the water inlet pipe 3 is convenient for discharging water in the water storage tank 7 into the heat exchange box 2, a water outlet pipe 4 is fixedly provided on the side of the heat exchange box 2, the water outlet pipe 4 is convenient for discharging water in the heat exchange box 2 into the water storage tank 7, a first water pump 5 is fixedly provided at one end of the water inlet pipe 3, a first water pipe 6 is fixedly provided at the water inlet of the first water pump 5, and a first water pipe 6 is fixedly provided at one end of the first water pipe 6 A water tank 7 is fixedly provided at the end, one side of the first water pump 5 is fixedly connected to one side of the water tank 7, the other side of the water tank 7 is fixedly connected to one end of the water outlet pipe 4, a second water pipe 8 is fixedly provided on the side of the water tank 7, one end of the second water pipe 8 is fixedly provided with a second water pump 9, the second water pump 9 is convenient for pumping water in the water tank 7 into the constant temperature heater 11, a third water pipe 10 is fixedly provided at the water outlet of the second water pump 9, one end of the third water pipe 10 is fixedly provided with a constant temperature heater 11, a fourth water pipe 12 is fixedly provided at the water outlet of the constant temperature heater 11, and one end of the fourth water pipe 12 is fixedly connected to the side of the water tank 7.

[0025] As a further implementation scheme of the above technical scheme: a sealing groove is provided at the top of the sleeve body 1, and a sealing ring 13 is provided inside the sealing groove. The sealing ring 13 is convenient for improving the sealing performance of the connection between the sleeve and the upper operating oil pipe 14.

[0026] As a further implementation scheme of the above technical scheme: an upper operating oil pipe 14 is provided inside the sleeve body 1 , and the sleeve body 1 is convenient for limiting the upper operating oil pipe 14 .

[0027] As a further implementation scheme of the above technical scheme: a fixing box 15 is fixedly provided on the outer side of the heat exchange box 2, the interior of the fixing box 15 is fixedly connected to the side of the water inlet pipe 3, and the interior of the fixing box 15 is fixedly connected to the side of the water outlet pipe 4. The fixing box 15 is convenient for fixing the water inlet pipe 3 and the water outlet pipe 4.

[0028] As a further implementation scheme of the above technical scheme: a water injection pipe 16 is fixedly provided on the top of the water tank 7, a drainage pipe 17 is fixedly provided on one side of the water tank 7, a sealing plug 18 is provided inside the drainage pipe 17, the water injection pipe 16 facilitates the injection of water into the water tank 7, and the drainage pipe 17 facilitates the discharge of water in the water tank 7.

[0029] During specific implementation: fix the heat exchange box 2 to the top of the side of the sleeve body 1 so that the sealing ring 13 is located on the inner side of the heat exchange box 2, start the constant temperature heater 11, the constant temperature heater 11 is a GOETAS thermostat with a built-in heating tube and a numerical control device, and heats the water inside the constant temperature heater 11 through the heating tube. When the water temperature inside the constant temperature heater 11 is higher than a certain threshold value, the numerical control device automatically controls the heater to be turned off, and the water inside the water storage tank 7 is pumped out through the second water pump 9, so that the water enters the constant temperature heater 11 through the second water pipe 8, the second water pump 9 and the third water pipe 10, and the water inside is heated by the constant temperature heater 11, and the heated water is discharged into the water storage tank 7 through the fourth water pipe 12. When the temperature of the water entering the constant temperature heater 11 is higher than a certain threshold value, the constant temperature heater 11 automatically controls the heating tube to be turned off. When the water temperature in the water storage tank 7 is lower than the threshold value, the constant temperature heater 11 automatically controls the heating tube to be turned on, and continues to heat the water. The heat exchanger 2 is heated to keep the water in the water tank 7 at a constant temperature, and the first water pump 5 is started. The first water pump 5 draws water from the water tank 7, so that the water in the water tank 7 enters the heat exchange box 2 through the first water pipe 6, the first water pump 5 and the water inlet pipe 3. The heat exchange box 2 is a copper pipe with high heat exchange efficiency. When the temperature near the sealing ring 13 is higher than the water temperature in the heat exchange box 2, the heat near the sealing ring 13 is absorbed by the water in the heat exchange box 2. When the temperature near the sealing ring 13 is lower than the water temperature in the heat exchange box 2, the sealing ring 13 is heated by the water in the heat exchange box 2, so that the temperature near the sealing ring 13 is kept constant, thereby keeping the temperature of the sealing ring 13 constant. After the heat exchange is completed, the water returns to the water tank 7 through the water outlet pipe 4, which is convenient for the reuse of water, so that the device is convenient for keeping the temperature of the sealing ring 13 at the connection between the sleeve and the upper operating oil pipe 14 constant, and avoiding the sealing ring 13 from being too high or too low in temperature, resulting in thermal expansion and contraction of the sealing ring 13, affecting the use effect of the sealing ring 13.

[0030] As a further implementation scheme of the above technical scheme: a motor 19 is fixedly provided on the side of the water tank 7, and the side of the transmission shaft of the motor 19 is rotatably connected to the side of the water tank 7 through a sealed bearing, so that the motor 19 can drive the rotating rod 20 to rotate.

[0031] As a further implementation scheme of the above technical scheme: a rotating rod 20 is fixedly provided at one end of the transmission shaft of the motor 19, and one end of the rotating rod 20 is rotatably connected to the inside of the water tank 7, so that the rotating rod 20 can drive the stirring plate 21 to rotate.

[0032] As a further implementation scheme of the above technical scheme: a plurality of stirring plates 21 are fixedly provided on the side of the rotating rod 20, and two reinforcing rods 22 are fixedly provided on the sides of the plurality of stirring plates 21, and one end of the plurality of reinforcing rods 22 is fixedly connected to the side of the rotating rod 20, so that the stirring plates 21 facilitate to accelerate the heat exchange rate of the water in the water storage tank 7.

[0033] During specific implementation: when the water after heat exchange in the water outlet pipe 4 flows back to the water storage tank 7, it is easy to cause uneven water temperature inside the water storage tank 7, causing the temperature of the water flowing into the constant temperature heater 11 to be higher or lower than the average water temperature of the water storage tank 7, resulting in the constant temperature heater 11 overheating the water or the heating time being too short, affecting the constant temperature effect of the water in the water storage tank 7, starting the motor 19, and the transmission shaft of the motor 19 drives the rotating rod 20 to rotate, thereby driving a number of stirring plates 21 to rotate, and the stability of the stirring plate 21 during rotation is improved by the reinforcing rod 22. By rotating a number of stirring plates 21 at the same time, it is convenient to accelerate the flow rate of the water in the water storage tank 7, thereby accelerating the heat exchange rate of the water in the water storage tank 7, making the water temperature in the water storage tank 7 uniform, so that the temperature of the water flowing into the constant temperature heater 11 is close to the average water temperature of the water storage tank 7, thereby improving the constant temperature effect of the water in the water storage tank 7.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic sealing device for an oil receiver sleeve capable of preventing thermal expansion and contraction, comprising a sleeve body (1), characterized in that: A heat exchange box (2) is fixedly provided at the top end of the side of the sleeve body (1), a water inlet pipe (3) is fixedly provided at the side of the heat exchange box (2), a water outlet pipe (4) is fixedly provided at the side of the heat exchange box (2), a first water pump (5) is fixedly provided at one end of the water inlet pipe (3), a first water pipe (6) is fixedly provided at the water inlet of the first water pump (5), a water storage tank (7) is fixedly provided at one end of the first water pipe (6), one side of the first water pump (5) is fixedly connected to one side of the water storage tank (7), and the water storage tank (7) The other side of the water tank (7) is fixedly connected to one end of the water outlet pipe (4); a second water pipe (8) is fixedly provided on the side of the water storage tank (7); a second water pump (9) is fixedly provided at one end of the second water pipe (8); a third water pipe (10) is fixedly provided at the water outlet of the second water pump (9); a constant temperature heater (11) is fixedly provided at one end of the third water pipe (10); a fourth water pipe (12) is fixedly provided at the water outlet of the constant temperature heater (11); one end of the fourth water pipe (12) is fixedly connected to the side of the water storage tank (7).

2. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 1, characterized in that: A sealing groove is provided at the top end of the sleeve body (1), and a sealing ring (13) is provided inside the sealing groove.

3. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 1, characterized in that: An upper operating oil pipe (14) is provided inside the sleeve body (1).

4. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 1, characterized in that: A fixing box (15) is fixedly provided on the outside of the heat exchange box (2), the interior of the fixing box (15) is fixedly connected to the side of the water inlet pipe (3), and the interior of the fixing box (15) is fixedly connected to the side of the water outlet pipe (4).

5. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 1, characterized in that: A water injection pipe (16) is fixedly provided at the top of the water storage tank (7), a drainage pipe (17) is fixedly provided at one side of the water storage tank (7), and a sealing plug (18) is provided inside the drainage pipe (17).

6. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 1, characterized in that: A motor (19) is fixedly provided on the side of the water tank (7), and the side of the transmission shaft of the motor (19) is rotatably connected to the side of the water tank (7) via a sealed bearing.

7. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 6, characterized in that: A rotating rod (20) is fixedly provided at one end of the transmission shaft of the motor (19), and one end of the rotating rod (20) is rotatably connected to the inside of the water storage tank (7).

8. The oil receiver sleeve dynamic sealing device capable of preventing thermal expansion and contraction according to claim 7, characterized in that: A plurality of stirring plates (21) are fixedly provided on the side of the rotating rod (20), two reinforcing rods (22) are fixedly provided on the side of each of the stirring plates (21), and one end of each of the reinforcing rods (22) is fixedly connected to the side of the rotating rod (20).

Images