Generator bearing integrated oil supply and return device

Abstract

The utility model relates to an integrated oil supply and return device for a generator bearing, which comprises an oil supply pipe, an oil return pipe, a jacking oil distribution assembly and an oil return box, and the jacking oil distribution assembly comprises a distributor, a jacking oil input pipe and a plurality of jacking oil distribution pipes. The front end of the oil supply pipe and the front end of the oil return pipe are fixedly connected with an oil inlet and an oil return opening of a bearing box of the generator respectively, the oil supply pipe and the front pipe section of each jacking oil distribution pipe are located in the oil return pipe, and the rear end of the oil return pipe is communicated with an inlet of the oil return box. The distributor is installed in the oil return tank and connected with the jacking oil input pipe and the jacking oil distribution pipes which are located in the oil return tank. The device has the advantages that the oil supply pipe and the jacking oil distribution assembly are hidden in the oil return pipe and the oil return tank, leaked oil can be received and blocked by the oil return pipe and the oil return tank, and the problems of inconvenience in recovery and cleaning of the leaked oil and safety risks are avoided; and compared with independent installation, integrated installation is more compact in structure, the installation space is greatly saved, and overhaul and maintenance of the generator are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of large-scale power generation equipment supporting equipment, and particularly relates to an integrated oil supply and return device for generator bearings. Background Art

[0002] In the current generator bearing oil supply and return system, the oil supply pipe, oil return pipe, and jacking oil distribution assembly are all arranged separately, occupying excessive space and hindering generator maintenance. Furthermore, neither the oil supply pipe nor the jacking oil supply pipe assembly is equipped with an oil leakage protection device. The oil pressure in these pipes is high, making leaks difficult to collect and cumbersome to clean. The jacking oil supply pipe assembly, in particular, experiences extremely high oil pressure during operation. Once a leak occurs, it can spray hundreds of meters away, making collection and cleaning difficult and posing a safety hazard. Utility Model Content

[0003] The utility model provides an integrated oil supply and return device for a generator bearing, aiming to overcome the above-mentioned deficiencies in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: an integrated oil supply and return device for generator bearings, which includes an oil supply pipe, an oil return pipe, a top shaft oil distribution assembly and an oil return tank. The top shaft oil distribution assembly includes a distributor, a top shaft oil input pipe and multiple top shaft oil distribution pipes. The front ends of the oil supply pipe and the oil return pipe are respectively fixedly connected to the oil inlet and oil return port of the bearing box of the generator. The front pipe sections of the oil supply pipe and each top shaft oil distribution pipe are all located in the oil return pipe. The front ends of the each top shaft oil distribution pipe extend into the bearing box and are connected to the top shaft mechanism The oil inlets are correspondingly connected, the rear end of the return oil pipe is connected with the inlet of the return oil tank, and the outlet of the return oil tank is connected with the oil storage tank through a return pipe. The distributor is installed in the return oil tank and is connected to the top shaft oil input pipe and each top shaft oil distribution pipe located in the return oil tank. The rear end of the top shaft oil input pipe extends out of the return oil tank and is connected with the oil storage tank through a booster pump. The middle pipe section of the oil supply pipe is located in the return oil tank, and the rear pipe section of the oil supply pipe extends out of the return oil tank and is connected with the oil storage tank through a delivery pump.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the front ends of the oil supply pipe and the oil return pipe are connected to the oil inlet and oil return port of the generator bearing box respectively through flanges, and the rear end of the oil return pipe is connected to the inlet of the oil return tank through a flange.

[0007] Furthermore, the distributor is also connected to an instrument tube for monitoring the oil pressure in each of the jack oil distribution pipes. The instrument tube is located in the oil return tank and is connected to a pressure gauge provided outside the oil return tank.

[0008] Furthermore, the front section and the middle section of the oil supply pipe are connected through a flange and a pressure orifice plate is installed at the connection. The oil supply pipe is connected to the pressure differential transmitter located outside the return oil tank through pressure pipes on both sides of the pressure orifice plate.

[0009] Furthermore, an oil temperature sensor is provided on the oil return tank.

[0010] Furthermore, the distributor is fixed on the inner wall of the return oil tank, and the middle pipe section of the oil supply pipe and each of the top shaft oil distribution pipes are fixedly connected to the return oil tank through pipe supports fixed on the bottom wall of the return oil tank.

[0011] Furthermore, the oil return tank is fixed to the wall next to the generator through a support frame.

[0012] Furthermore, the oil return tank and the support frame are both made of carbon steel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The front and middle sections of the oil supply pipe, along with the entire jacking oil distribution assembly, are concealed within the oil return pipe and tank. Even if the supply pipe and jacking oil distribution assembly leak due to high oil pressure, the leaked oil will be caught by the return pipe and tank, eliminating the inconvenience and safety risks of oil spraying outwards. Furthermore, this integrated installation method results in a more compact structure, saving significant installation space and facilitating generator maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric diagram of the integrated oil supply and return device for generator bearings provided by the utility model;

[0016] Figure 2 for Figure 1 The device is shown in an axonometric view without the return tank and support frame;

[0017] Figure 3 for Figure 1 A top view of the device shown (the fuel return tank cover is not shown and some invisible structures are shown in dotted lines);

[0018] Figure 4 for Figure 1 Front view of the device shown (partially invisible structures are shown in dotted lines).

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Oil supply pipe; 2. Oil return pipe; 3. Oil return tank; 4. Distributor; 5. Jacking oil input pipe; 6. Jacking oil distribution pipe; 7. Instrument pipe; 8. Pressure pipe; 9. Pipe support; 10. Support frame. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] In the description of the present invention, if terms indicating directions such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used, the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0023] like Figures 1 to 4 As shown, the utility model provides an integrated oil supply and return device for generator bearings, which includes an oil supply pipe 1, an oil return pipe 2, a top shaft oil distribution assembly and an oil return box 3. The top shaft oil distribution assembly includes a distributor 4, a top shaft oil input pipe 5 and a plurality of top shaft oil distribution pipes 6. The front ends of the oil supply pipe 1 and the oil return pipe 2 are respectively fixedly connected to the oil inlet and oil return port of the bearing box of the generator. The front pipe sections of the oil supply pipe 1 and each top shaft oil distribution pipe 6 are all located in the oil return pipe 2. The front ends of each top shaft oil distribution pipe 6 extend into the bearing box and are aligned with the oil inlets of the top shaft mechanism. Should be connected, the rear end of the return oil pipe 2 is connected with the inlet of the return oil tank 3, and the outlet of the return oil tank 3 is connected with the oil storage tank through a return pipe. The distributor 4 is installed in the return oil tank 3 and is connected to the top shaft oil input pipe 5 and each top shaft oil distribution pipe 6 located in the return oil tank 3. The rear end of the top shaft oil input pipe 5 extends out of the return oil tank 3 and is connected with the oil storage tank through a booster pump. The middle pipe section of the oil supply pipe 1 is located in the return oil tank 3, and the rear pipe section of the oil supply pipe 1 extends out of the return oil tank 3 and is connected with the oil storage tank through a delivery pump.

[0024] It should be noted that the utility model adopts a sleeve design for the generator bearing oil supply pipe and return oil pipe, that is, the oil supply pipe is built into the return oil pipe, and at the same time, a box body (return oil tank) is added to the end of the return oil pipe away from the bearing box. The oil supply pipe passes through the inside of the return oil tank and is connected to the oil storage tank through a delivery pump, etc. The top shaft box oil supply distribution device (top shaft oil distribution assembly) is integrated into the return oil pipe and the return oil tank. In this way, even if there is an oil leakage in the oil supply pipe or the top shaft oil distribution assembly during use, the dripping or spraying leaked oil will enter the return oil pipe or the return oil tank, so there is no need to clean the leak. If it is just dripping oil, it can be temporarily left unrepaired. It only needs to be repaired when the leakage is serious and affects normal use.

[0025] In one embodiment of the present invention, the front ends of the oil supply pipe 1 and the oil return pipe 2 are connected to the oil inlet and oil return port of the generator bearing box respectively through flanges, and the rear end of the oil return pipe 2 is connected to the inlet of the oil return tank 3 through a flange.

[0026] It is understood that the use of flanges for the above connection offers the advantages of easy assembly and disassembly, and ease of maintenance and replacement. The oil inlet on the generator's bearing housing is located deeper in the bearing housing, while the oil return port is located at the outer end of the bearing housing. The oil inlet and return port are arranged substantially coaxially.

[0027] In one embodiment of the present invention, the distributor 4 is further connected to an instrument tube 7 for monitoring the oil pressure in each of the jacking oil distribution pipes 6. The instrument tube 7 is located within the oil return tank 3 and communicates with a pressure gauge located outside the oil return tank 3. The front and middle sections of the oil supply pipe 1 are connected via a flange, and a pressure orifice plate is installed at the connection. The oil supply pipe 1 is connected to a differential pressure transmitter located outside the oil return tank 3 via pressure pipes 8 on both sides of the pressure orifice plate.

[0028] It should be noted that in this embodiment, the pressure orifice plate and instrument measuring device on the oil supply pipe are integrated into the return oil tank. The oil pressure and oil supply flow in the corresponding pipeline can be easily known through the pressure gauge and pressure differential transmitter on the side wall of the return oil tank.

[0029] In one embodiment of the present invention, an oil temperature sensor is provided on the oil return tank 3 .

[0030] It should be noted that the oil temperature sensor can monitor the oil temperature in the return tank in real time, facilitating oil supply adjustments and ensuring safety. Furthermore, if necessary, a liquid level sensor can be installed on the return tank to sense the oil level and prevent excessive oil accumulation. The top of the return tank can be equipped with a retractable lid, allowing for easy inspection, installation, maintenance, or replacement of components when necessary.

[0031] In one embodiment of the present utility model, the distributor 4 is fixed on the inner wall of the return oil tank 3, and the middle pipe section of the oil supply pipe 1 and each of the top shaft oil distribution pipes 6 are fixedly connected to the return oil tank 3 through a pipe support 9 fixed on the bottom wall of the return oil tank 3.

[0032] It should be noted that the support member can provide support and fixation for the corresponding oil supply pipe and top shaft oil distribution pipe to avoid vibration and abnormal noise when the corresponding pipeline transports grease with higher pressure. The support member may include a clamp with a rubber pad.

[0033] In one embodiment of the present invention, the oil return tank 3 is fixed to a wall next to the generator via a support frame 10 .

[0034] It should be noted that the wall here can be a traditional concrete wall or a specially set steel structure frame.

[0035] In one embodiment of the present invention, the oil return tank 3 and the support frame 10 are both made of carbon steel.

[0036] The generator bearing integrated oil supply and return device provided in the above-mentioned embodiments of the present invention can effectively save installation space near the generator, which is beneficial to the operation, inspection and maintenance of the generator; once the oil supply pipe or the top shaft oil distribution assembly leaks, the leaked oil will be recovered by the return oil pipe and the return oil tank; the present invention can completely separate the oil supply pipe and return oil pipe of the generator and the bearing, which is beneficial to the inspection and maintenance of the generator.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A generator bearing integrated oil supply and return device, characterized in that: The invention comprises an oil supply pipe (1), an oil return pipe (2), a top shaft oil distribution assembly and an oil return tank (3); the top shaft oil distribution assembly comprises a distributor (4), a top shaft oil input pipe (5) and a plurality of top shaft oil distribution pipes (6); the front ends of the oil supply pipe (1) and the oil return pipe (2) are respectively fixedly connected to the oil inlet and the oil return port of the bearing box of the generator; the front pipe sections of the oil supply pipe (1) and each top shaft oil distribution pipe (6) are located in the oil return pipe (2); the front ends of each top shaft oil distribution pipe (6) extend into the bearing box and are correspondingly connected to the oil inlets of the top shaft mechanism; the rear ends of the oil return pipe (2) are fixedly connected to the oil inlet and the oil return port of the bearing box of the generator; The inlet of the return oil tank (3) is connected, and the outlet of the return oil tank (3) is connected to the oil storage tank through a return pipe. The distributor (4) is installed in the return oil tank (3) and is connected to the top shaft oil input pipe (5) and each top shaft oil distribution pipe (6) located in the return oil tank (3). The rear end of the top shaft oil input pipe (5) extends out of the return oil tank (3) and is connected to the oil storage tank through a booster pump. The middle pipe section of the oil supply pipe (1) is located in the return oil tank (3), and the rear pipe section of the oil supply pipe (1) extends out of the return oil tank (3) and is connected to the oil storage tank through a delivery pump.

2. The generator bearing integrated oil supply and return device according to claim 1, characterized in that: The front ends of the oil supply pipe (1) and the oil return pipe (2) are respectively connected to the oil inlet and the oil return port of the generator bearing box through flanges, and the rear end of the oil return pipe (2) is connected to the inlet of the oil return tank (3) through a flange.

3. The generator bearing integrated oil supply and return device according to claim 1, characterized in that: The distributor (4) is also connected to an instrument tube (7) for monitoring the oil pressure in each of the top shaft oil distribution pipes (6); the instrument tube (7) is located in the oil return tank (3) and is connected to a pressure gauge provided outside the oil return tank (3).

4. The generator bearing integrated oil supply and return device according to claim 1, characterized in that: The front pipe section and the middle pipe section of the oil supply pipe (1) are connected via a flange and a pressure orifice plate is installed at the connection. The oil supply pipe (1) is connected to a pressure differential transmitter located outside the oil return tank (3) via pressure pipes (8) on both sides of the pressure orifice plate.

5. The generator bearing integrated oil supply and return device according to claim 1, characterized in that: An oil temperature sensor is provided on the oil return tank (3).

6. The generator bearing integrated oil supply and return device according to claim 1, characterized in that: The distributor (4) is fixed on the inner wall of the oil return tank (3), and the middle pipe section of the oil supply pipe (1) and each of the top shaft oil distribution pipes (6) are fixedly connected to the oil return tank (3) through a pipe support (9) fixed on the bottom wall of the oil return tank (3).

7. The generator bearing integrated oil supply and return device according to any one of claims 1 to 6, characterized in that: The oil return tank (3) is fixed to a wall next to the generator via a support frame (10).

8. The generator bearing integrated oil supply and return device according to claim 7, characterized in that: The oil return tank (3) and the support frame (10) are both made of carbon steel.

Images