Jacking oil insulation device for generator bearing bush

Abstract

A jacking oil insulation device for a generator bearing bush, wherein a sealing member is mounted on the outer wall of a first oil tube joint (2); a second insulating member and a second oil tube joint (5) are provided in a cavity between the first oil tube joint (2) and the sealing member; a first insulating member is provided between the sealing member and an oil tube; and the second insulating member is arranged between the first oil tube joint (2) and the second oil tube joint (5).

Description

A generator bearing top oil insulation device Technical Field

[0001] The utility model belongs to the technical field of generator bearing lubrication, and in particular relates to a generator bearing top oil insulation device. Background Art

[0002] In order to prevent the shaft current from flowing through the shaft neck, the top shaft oil pipe of the bearing is insulated from the external pipe of the bearing box. To ensure the insulation between the oil pipes, a generator bearing top shaft oil insulation device is installed in the bearing box.

[0003] At present, the generator bearing jacking oil insulation device is often connected by flange. The location of the flange is relatively narrow and not convenient for disassembly and assembly. Improper installation can easily cause component damage and insulation failure. In addition, due to the high pressure of the jacking oil system, if the installation process is not high, it is very easy to cause oil leakage in the jacking oil system, thus causing major accidents such as oil failure and burning of the generator set. Utility Model Content

[0004] The utility model aims to provide a generator bearing top oil insulation device to overcome the problems of poor insulation performance and easy oil leakage in the existing generator bearing top oil insulation device which adopts flange connection.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A generator bearing top shaft oil insulation device includes a first oil pipe joint, a sealing member is installed on the outer side wall of the first oil pipe joint, a through hole is opened on the sealing member for the oil pipe to pass through, a first insulating member is arranged between the sealing member through hole and the oil pipe, a second oil pipe joint is arranged on one side of the first insulating member, and a second insulating member is arranged between the first oil pipe joint and the second oil pipe joint.

[0007] Furthermore, the second oil pipe joint and the second insulating member are both arranged inside the sealing member.

[0008] Furthermore, the first oil pipe joint is threadedly connected to the sealing element.

[0009] Furthermore, the outer side wall of the first oil pipe joint is threaded.

[0010] Furthermore, the sealing member adopts a hollow nut.

[0011] Furthermore, the first insulating member is an insulating glass cloth tube.

[0012] Furthermore, the second insulating member is an insulating pad.

[0013] Furthermore, the insulating pad is provided with a through hole for the oil pipe to pass through.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] The utility model provides a generator bearing top shaft oil insulation device, which comprises a sealing member installed on the outer wall of a first oil pipe joint, a second insulating member and a second oil pipe joint being arranged in a cavity between the first oil pipe joint and the sealing member, the first insulating member being arranged between the sealing member and the oil pipe, and the second insulating member being arranged between the first oil pipe joint and the second oil pipe joint, thereby ensuring that each section of the oil pipe is conductive while achieving insulation between each oil pipe, thereby ensuring the insulation requirements of the generator bearing; in addition, the oil pipe sections are connected in the form of an oil pipe joint, which is easier to install, has a more reliable connection relationship, and can effectively prevent the problem of oil leakage from the oil pipe.

[0016] Preferably, the oil pipes are connected to the oil pipe joints via hollow nuts, and the length of the middle oil pipe can be adjusted on site according to the size of the space to match the internal space of the bearing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a structural diagram of a generator bearing top oil insulation device in an embodiment of the present utility model.

[0018] FIG2 is a schematic diagram of the installation of the generator bearing top oil insulation device in an embodiment of the present invention.

[0019] In the figure, 1. oil inlet pipe; 2. first oil pipe joint; 3. hollow nut; 4. insulating gasket; 5. second oil pipe joint; 6. insulating glass cloth tube; 7. middle oil pipe; 8. oil outlet pipe. DETAILED DESCRIPTION

[0020] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] In one embodiment of the present utility model, a generator bearing top shaft oil insulation device is provided, as shown in Figure 1, comprising a first oil pipe joint 2, a second oil pipe joint 5, a first insulating member, a second insulating member and a sealing member; wherein, the second insulating member is arranged between the first oil pipe joint 2 and the second oil pipe joint 5, the first oil pipe joint 2 and the second oil pipe joint 5 do not contact each other, the sealing member is installed on the first oil pipe joint 2, and the first oil pipe joint 2, the second oil pipe joint 5, the first insulating member, the second insulating member and the sealing member are all provided with a through hole for the oil pipe to pass through, the first insulating member is arranged between the through hole position of the seal and the oil pipe, and the seal does not contact the second oil pipe joint 5.

[0022] Specifically, the oil pipe is divided into an oil inlet pipe 1, an intermediate oil pipe 7 and an oil outlet pipe 8. The oil inlet pipe 1 and the intermediate oil pipe 7, and the intermediate oil pipe 7 and the oil outlet pipe 8 are all connected through the oil insulation device. Example

[0023] A generator bearing top shaft oil insulation device includes a first oil pipe joint 2, the outer side wall of the first oil pipe joint 2 is threadedly connected to a sealing member, that is, the outer side wall of the first oil pipe joint 2 is provided with an external thread; the sealing member adopts a hollow nut 3, the hollow nut 3 is a hollow structure, and the inner wall is provided with an internal thread, and a second oil pipe joint 5 and a second insulating member are respectively arranged in the cavity formed between the first oil pipe joint 2 and the hollow nut 3; on the first oil pipe joint 2, the first oil pipe joint 2, the second oil pipe joint 5, the first insulating member, the second insulating member and the hollow nut 3 are all provided with through holes for the oil pipe to pass through; the second insulating member adopts an insulating gasket 4, which is arranged between the first oil pipe joint 2 and the second oil pipe joint 5, and the first insulating member adopts an insulating glass cloth tube 6, which is arranged between the through holes of the hollow nut of the oil pipe and isolates the second oil pipe joint 5 from the hollow nut 3 at the same time.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A generator bearing top oil insulation device, characterized in that: The invention comprises a first oil pipe joint (2), a sealing member is installed on the outer wall of the first oil pipe joint (2), a through hole for the oil pipe to pass through is formed on the sealing member, a first insulating member is arranged between the sealing member through hole and the oil pipe, a second oil pipe joint (5) is arranged on one side of the first insulating member, and a second insulating member is arranged between the first oil pipe joint (2) and the second oil pipe joint (5).

2. A generator bearing top oil insulation device according to claim 1, characterized in that: The second oil pipe joint (5) and the second insulating member are both arranged inside the sealing member.

3. A generator bearing top oil insulation device according to claim 1, characterized in that: The first oil pipe joint (2) is threadedly connected to the sealing element.

4. A generator bearing top oil insulation device according to claim 3, characterized in that: The outer wall of the first oil pipe joint (2) is threaded.

5. A generator bearing top oil insulation device according to claim 3, characterized in that: The sealing member adopts a hollow nut (3).

6. A generator bearing top oil insulation device according to claim 1, characterized in that: The first insulating member is an insulating glass cloth tube (6).

7. The generator bearing top oil insulation device according to claim 1, characterized in that: The second insulating member is an insulating pad (4).

8. A generator bearing top oil insulation device according to claim 6, characterized in that: The insulating pad (4) is provided with a through hole through which the oil pipe passes.

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