CN217057100U - Vertical motor lubricating oil leakage eliminating device - Google Patents

Abstract

The utility model belongs to the technical field of the nuclear power station rotates equipment maintenance engineering, concretely relates to vertical motor lubricating oil leakage elimination equipment. In the utility model, one end of the upper cover of the motor bearing chamber is fixedly arranged at the top of the bearing chamber shell, a pore channel is arranged between the other end of the upper cover of the motor bearing chamber and the bearing chamber enclosing plate, one end of the oil return pipeline is arranged in the pore channel, the other end of the oil return pipeline is connected with the straight pipe section through the elbow A, one part of the upper cover of the motor bearing chamber is provided with an upper breathing channel and a lower breathing channel, and the pore channel of the upper cover of the bearing chamber, which is communicated with the atmosphere, is sealed by a plug; the motor shell and the bush are provided with a pore channel communicated with the upper breathing channel again, the connecting pipe is welded in the pore channel, the connecting pipe is connected with the elbow B through the locking nut B, and the respirator is welded on the elbow B. The utility model discloses the problem of vertical sliding bearing motor bearing room lubricating oil production a large amount of foams, unable judgement of oil level and lubricating oil foam leakage from outside respirator has effectively been solved.

Description

Vertical motor lubricating oil leakage eliminating device

Technical Field

The utility model belongs to the technical field of the nuclear power station rotates equipment maintenance engineering, concretely relates to vertical motor lubricating oil leakage elimination equipment.

Background

The conventional islands of the units 1 and 2 in the nuclear power station are respectively provided with 6 BKBA 2200-170-1 type vertical centrifugal pumps, and each pump is driven by a BKBA 1600-1500 mu 3 type 6KV high-voltage motor. The motor has the rotating speed of 1500rpm and the rated power of 1600KW, the motor bearing is a sliding bearing, the upper bearing consists of a thrust bearing and a guide bearing, and the lower bearing only comprises the guide bearing.

When the pump motor normally operates, the lubricating oil in the guide bearing bracket is stirred by the rotor, the oil level is raised, the lubricating oil flows to the bearing chamber outside the guide bearing bracket along 6 oil return pipelines in the lower bearing chamber, the lubricating oil flows to the guide bearing bracket for lubricating and cooling the guide bearing after being cooled by the cooler, and the lubricating oil is circulated repeatedly. In the circulation process, a large amount of lubricating oil foams are generated when lubricating oil falls back from the tail end of the oil return pipeline, the foams are gathered in the bearing chamber and extruded out along a breathing passage of the upper cover of the bearing chamber, when the foams are extruded to the position of the respirator, the foams are cooled and condensed by a cooling partition plate in the respirator to form oil drops, and the lubricating oil leaks because the opening of the respirator faces downwards. In addition, due to the fact that foams in the bearing chamber are gathered, the oil level cannot be accurately distinguished by an oil level mirror of the bearing chamber, if too much lubricating oil leaks from the position of the breather, the oil level of the lubricating oil of the motor bearing is lower than the lower limit, the temperature of the motor bearing rises, even the motor bearing is burnt out and damaged, and the safe operation of the motor is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical motor lubricating oil leaks remove device, simple to operate has effectively solved vertical sliding bearing motor bearing room lubricating oil and has produced the problem that a large amount of foams, the unable judgement of oil level and lubricating oil foam from outside respirator leaked, improves security, reliability, the stability during motor operation, has practiced thrift the maintenance cost of motor.

The utility model adopts the technical proposal that:

a lubricating oil leakage eliminating device for a vertical motor comprises a bearing chamber shell, an oil cooler, a motor bearing chamber upper cover, an oil return pipeline, a locking nut A, a bearing chamber coaming, an elbow A, a straight pipe section, a motor shell, a bushing, an upper breathing channel, a lower breathing channel, a plug, a connecting pipe, a locking nut B, an elbow B and a respirator, wherein one end of the motor bearing chamber upper cover is fixedly arranged at the top of the bearing chamber shell; the motor shell and the bush are provided with a pore passage communicated with the upper breathing passage again, the connecting pipe is welded in the pore passage, the connecting pipe is connected with the elbow B through the locking nut B, and the respirator is welded on the elbow B.

The oil return pipeline is characterized by further comprising an union and an extension pipe, wherein the other end of the oil return pipeline is connected with the extension pipe through the union, and the extension pipe is connected with the straight pipe section through an elbow A.

The straight pipe section is inserted into the oil cooler and is positioned below the oil level line.

The lower part of the motor bearing chamber upper cover is provided with a ribbed plate for increasing the strength of the bearing chamber upper cover.

And the outlet of the straight pipe section is immersed in lubricating oil, so that the generation of foams is reduced.

The respirator is oriented upward.

And a sealing gasket is arranged between the plug and the original pore passage.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the lubricating oil leakage eliminating device for the vertical motor has simple structure and convenient installation;

(2) the utility model discloses a vertical motor lubricating oil leakage eliminating device, which effectively solves the problem that the lubricating oil in the bearing chamber of the lower motor generates a large amount of foam in the circulation process of the lubricating oil in the bearing chamber;

(3) the utility model discloses a vertical motor lubricating oil leakage elimination device, which effectively solves the problem that lubricating oil leaks out due to the rupture of lubricating oil foam at the motor respirator;

(4) the utility model discloses a vertical motor bearing lubricating oil leakage elimination device, effectively solved the problem that the oil level can't be accurately judged because of a large amount of foam gathered in the lower bearing chamber of the motor;

(5) the utility model discloses an elimination equipment is leaked to vertical motor lubricating oil has improved the ability of the safety and stability operation of motor, has reduced safe risk, has saved human cost and maintenance cost.

Drawings

Fig. 1 is a schematic view of a bearing oil return of a device for eliminating leakage of lubricating oil of a bearing of a vertical motor provided by the present invention;

fig. 2 is a schematic view of the installation of a breather in the device for eliminating the leakage of lubricating oil of the vertical motor bearing provided by the present invention.

In the figure: 1. a bearing chamber housing; 2. an oil cooler; 3. an oil line; 5. an upper cover of the lower bearing chamber of the motor; 6. a rib plate; 7. an oil return line; 8. locking the nut; 9. a bearing chamber coaming; 10. a movable joint; 11. an elbow A; 12. a straight pipe section; 13. a motor housing; 14. a bushing; 15. an upper breathing passage; 16. a lower breathing passage; 17. plugging with a thread; 18. a sealing gasket; a connecting pipe; 20. fixing a nut; 21. an elbow B; 22. a respirator; 23. and (5) lengthening the tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 and fig. 2, the device for eliminating lubricant leakage of a vertical motor bearing provided by the present invention comprises a bearing chamber housing 1, an oil cooler 2, a motor bearing chamber upper cover 5, a rib plate 6, an oil return line 7, a lock nut A8, a bearing chamber enclosure 9, a union 10, an elbow a11, a straight pipe section 12, a motor housing 13, a bushing 14, an upper breathing passage 15, a lower breathing passage 16, a plug 17, a sealing gasket 18, a connecting pipe 19, a lock nut B20, an elbow B21, a breather 22, and an extension pipe 23, wherein one end of the motor bearing chamber upper cover 5 is fixedly installed on the top of the bearing chamber housing 1, a pore passage is provided between the other end of the motor bearing chamber upper cover 5 and the bearing chamber enclosure 9, one end of the oil return line 7 is installed in the pore passage and is fixed and limited by the lock nut A8, the other end of the oil return line 7 is connected with the extension pipe 23 by the union 10, the extension pipe 23 is connected with the straight pipe section 12 through an elbow A11, and the straight pipe section 12 is inserted outside the oil cooler 2 and is positioned below the oil level line 3; the lower part of the motor bearing chamber upper cover 5 is provided with a ribbed plate 6 for increasing the strength of the bearing chamber upper cover; an upper breathing passage 15 and a lower breathing passage 16 are arranged at one position of the upper cover 5 of the motor bearing chamber, and the upper breathing passage 15 is sealed with a sealing gasket 18 by a plug 17 for an original pore passage communicated with the atmosphere through the upper cover 5 of the bearing chamber; the motor casing 13 and the bush 14 are provided with a hole, the connecting pipe 19 is welded in the hole, the connecting pipe 19 is connected with the elbow B21 through a locking nut B20, and the respirator 22 is welded on the elbow B21.

The working principle of the lubricating oil leakage eliminating device for the vertical motor bearing of the present invention is described below with reference to fig. 1 and 2: the tail end of the oil return line of the lower bearing of the original motor is not immersed into the lubricating oil in the bearing chamber, the lubricating oil near the guide bearing is stirred during the running of the motor, the lubricating oil in the enclosing plate of the bearing flows outwards along the oil return line and then falls down to generate a large amount of foam, and the more the lubricating oil foam is accumulated, the more the lubricating oil foam is not easily dissipated. A large amount of lubricating oil foam can be extruded along the respiratory track, namely the direction indicated by the arrow of the drawing, the foam is extruded to the bubble at the outlet of the breather and is broken, and the lubricating oil drips under the action of gravity after the breather is gathered, so that the lubricating oil leaks, the lubricating oil in the bearing chamber is reduced, and the safe operation of the motor is endangered. In order to reduce a large amount of bubbles generated at the outlet position of the oil return pipeline in the lower bearing chamber, an elbow and a straight pipe section are arranged at the oil return outlet position of the lower bearing chamber, and the oil return pipe outlet is immersed in lubricating oil, so that the generation of foams can be effectively reduced. And, dismantle original respirator, install seal gasket, carry out the shutoff with original respirator mounted position. At the breathing passageway on upper portion corresponding position trompil, welding installation pipeline and installation respirator change the respirator opening upwards, even there is the foam to break in respirator department, lubricating oil is during the final flow to the bearing room along breathing passageway under the effect of gravity, and lubricating oil in the bearing room can not reduce, has guaranteed the normal operating of motor.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (7)

1. The utility model provides a vertical motor lubricating oil leakage remove device which characterized in that: comprises a bearing chamber shell (1), an oil cooler (2), a motor bearing chamber upper cover (5), an oil return pipeline (7), a locking nut A (8), a bearing chamber coaming (9), an elbow A (11), a straight pipe section (12), a motor shell (13), a bush (14), an upper breathing passage (15), a lower breathing passage (16), a plug (17), a connecting pipe (19), a locking nut B (20), an elbow B (21) and a respirator (22), wherein one end of the motor bearing chamber upper cover (5) is fixedly arranged at the top of the bearing chamber shell (1), a pore channel is arranged between the other end of the motor bearing chamber upper cover (5) and the bearing chamber coaming (9), one end of the oil return pipeline (7) is arranged in the pore channel and is fixedly limited by the locking nut A (8), and the other end of the oil return pipeline (7) is connected with the straight pipe section (12) by the elbow A (11), an upper breathing passage (15) and a lower breathing passage (16) are arranged at one position of an upper cover (5) of a motor bearing chamber, and the upper breathing passage (15) is sealed with an original hole passage communicated with the atmosphere through the upper cover (5) of the bearing chamber by a plug (17); the motor shell (13) and the lining (14) are provided with a pore channel communicated with the upper breathing channel (15) again, the connecting pipe (19) is welded in the pore channel, the connecting pipe (19) is connected with the elbow B (21) through a locking nut B (20), and the respirator (22) is welded on the elbow B (21).

2. The vertical motor lubricant leakage elimination device according to claim 1, characterized in that: the oil return pipeline is characterized by further comprising an union (10) and an extension pipe (23), wherein the other end of the oil return pipeline (7) is connected with the extension pipe (23) through the union (10), and the extension pipe (23) is connected with the straight pipe section (12) through an elbow A (11).

3. The vertical motor lubricant leakage elimination device according to claim 2, characterized in that: the straight pipe section (12) is inserted into the oil cooler (2) and is positioned below the oil level line (3).

4. The vertical motor lubricant leakage elimination device according to claim 3, characterized in that: and a ribbed plate (6) is arranged at the lower part of the motor bearing chamber upper cover (5) and is used for increasing the strength of the bearing chamber upper cover.

5. The vertical motor lubricant leakage elimination device according to claim 4, wherein: the outlet of the straight pipe section (12) is immersed in lubricating oil, so that the generation of foam is reduced.

6. The vertical motor lubricating oil leakage elimination device according to claim 5, characterized in that: the respirator (22) is directed upwardly.

7. The vertical motor lubricant leakage elimination device according to claim 6, wherein: and a sealing gasket (18) is arranged between the plug (17) and the original pore channel.

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