Marine vertical lubricating oil pump base and mechanical sealing part replacement method

Abstract

The invention relates to the technical field of mechanical quick-wear part replacement, and provides a marine vertical lubricating oil pump base and a mechanical sealing part replacement method.The marine vertical lubricating oil pump base comprises a supporting frame, a pump body of a vertical lubricating oil pump is fixedly connected with the supporting frame, and a motor of the vertical lubricating oil pump is connected with the pump body through a connecting frame; the motor is connected with the supporting frame through bolts. The jacking driving element is fixedly arranged on the supporting frame; the cross rod is connected with the output end of the jacking driving element; the pulley is rotationally arranged on the cross rod; one end of the steel wire rope is fixedly connected with a motor of the vertical lubricating oil pump, and the other end is fixedly connected with the supporting frame after winding around the pulley. The method has no requirement on the hoisting experience of maintenance personnel, does not damage surrounding equipment, can reduce the working intensity of the maintenance personnel, and is beneficial to realizing the quick replacement of the mechanical sealing element of the vertical lubricating oil pump for the ship.

Description

Technical Field

[0001] The invention relates to the technical field of replacing mechanical wearing parts, and in particular to a method for replacing a marine vertical lubricating oil pump base and a mechanical seal. Background Art

[0002] The mechanical seal of a marine vertical lubricating oil pump is a consumable part and needs to be replaced regularly. The mechanical seal is installed between the motor and the pump body, so the replacement process of the mechanical seal involves the disassembly and assembly of the motor. The marine vertical lubricating oil pump is mostly located in the lower part of the cabin and suspended on a base. There are many pipes around it and the maintenance space is small. At present, the motor of a marine vertical lubricating oil pump is usually disassembled and assembled by hoisting with a hand winch, but there is no existing lifting point. The hand winch can only be hung on the pipeline for use. This method has certain requirements on the hoisting experience of the maintenance personnel, and if the lifting point is not selected properly, it may also cause damage to the pipeline. Therefore, how to provide a vertical lubricating oil pump base that is easy to disassemble and assemble the motor is a problem that needs to be solved urgently in this field. Summary of the invention

[0003] The object of the present invention is to provide a method for replacing a base and a mechanical seal of a marine vertical lubricating oil pump to solve the above-mentioned defects of the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A marine vertical lubricating oil pump base, comprising:

[0006] A support frame, a pump body of the vertical lubricating oil pump is fixedly connected to the support frame, a motor of the vertical lubricating oil pump is connected to the pump body via a connecting frame, and the motor is connected to the support frame via bolts;

[0007] A lifting drive element is fixed on the supporting frame;

[0008] A crossbar connected to an output end of the lifting drive element;

[0009] a pulley rotatably disposed on the crossbar; and

[0010] One end of the steel wire rope is fixedly connected to the motor of the vertical lubricating oil pump, and the other end is fixedly connected to the supporting frame after being wound around the pulley.

[0011] Optionally, it further comprises a guide rod and a guide seat, wherein the guide seat is fixed on the support frame, the guide rod is slidably inserted into the guide seat, and one end of the guide rod is fixedly connected to the cross bar.

[0012] Optionally, a linear bearing is provided between the guide seat and the guide rod, and the linear bearing is fixedly connected to the guide seat.

[0013] Optionally, both ends of the cross bar are fixedly connected to the guide rods.

[0014] Optionally, two pulleys are provided and are disposed at both ends of the cross bar.

[0015] Optionally, a support rod is provided on the top of the motor of the vertical lubricating oil pump, and a support seat is provided on the top of the support frame. The support rod can be slidably passed through the support seat, and a stopper is connected to the top of the support rod. A buffer spring is provided between the stopper and the support seat, and when the motor of the vertical lubricating oil pump is installed in place, the buffer spring is in a compressed state.

[0016] Optionally, the stopper is connected to the support rod via threads.

[0017] Optionally, the lifting drive element is a jack.

[0018] Optionally, the support frame is provided with safety bolt holes, so that when the motor of the vertical lubricating oil pump is lifted to the limit position, the electrode is connected to the support frame through the safety bolts.

[0019] The present invention also provides a method for replacing a mechanical seal of a marine vertical lubricating oil pump, using the marine vertical lubricating oil pump base described in the previous item, comprising the following steps:

[0020] S1. Remove the connecting bolts between the motor and the support frame, and between the motor and the pump body;

[0021] S2, lift the crossbar through the lifting drive element to drive the motor to rise;

[0022] S3. When the motor rises to the limit position, the motor is connected to the support frame by safety bolts;

[0023] S4. Replace the mechanical seal and remove the safety bolts after replacement;

[0024] S5. Lower the crossbar by lifting the drive element, lower the motor and reinstall it.

[0025] The technical solution of the present invention has at least the following advantages and beneficial effects: in the present invention, after the motor is disassembled, the motor can be driven to rise by driving the cross bar upward through the jacking drive element, and no lifting experience is required for the maintenance personnel, and no damage is caused to the surrounding equipment. The work intensity of the maintenance personnel can be reduced, which helps to realize the rapid replacement of the mechanical seal of the marine vertical lubricating oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of a marine vertical lubricating oil pump base provided in Example 1;

[0028] Figure 2 for Figure 1 A partial cross-sectional view of the A direction;

[0029] Figure 3 A diagram showing the lifting state of a motor of a marine vertical lubricating oil pump base provided in Example 1;

[0030] Figure 4 A schematic diagram of the structure of a marine vertical lubricating oil pump base provided in Example 2;

[0031] Figure 5 A diagram showing the motor lifting state of a marine vertical lubricating oil pump base provided in Example 2;

[0032] Icon: 1-support frame, 2-lifting drive element, 3-cross bar, 4-pulley, 5-wire rope, 6-guide rod, 7-guide seat, 8-support rod, 9-support seat, 10-buffer spring, 11-stopper, 12-pump body, 13-motor, 14-connecting frame, 15-connecting bolt, 16-safety bolt. DETAILED DESCRIPTION

[0033] Example 1

[0034] refer to Figure 1 and Figure 2 A marine vertical lubricating oil pump base comprises a supporting frame 1, a lifting driving element 2, a cross bar 3, a pulley 4 and a steel wire rope 5.

[0035] The pump body 12 of the vertical lubricating oil pump is fixedly connected to the supporting frame 1, and the motor 13 of the vertical lubricating oil pump is connected to the pump body 12 through a connecting frame 14. The connecting frame 14, the motor 13 and the pump body 12 are all connected by bolts, and the motor 13 is connected to the supporting frame 1 by bolts.

[0036] The lifting drive element 2 is fixedly mounted on the support frame 1, and the cross bar 3 is connected to the output end of the lifting drive element 2. As an option, the lifting drive element 2 of this embodiment adopts a jack. In practical applications, a manual jack or an automatic jack can be selected. On this basis, the top rod of the jack is fixedly connected with a connecting sleeve, and the connecting sleeve is mounted on the cross bar 3.

[0037] The pulley 4 is rotatably set on the cross bar 3, one end of the wire rope 5 is fixedly connected to the motor 13 of the vertical lubricating oil pump, and the other end of the wire rope 5 is fixedly connected to the support frame 1 after passing through the pulley 4. In this way, when replacing the seal, the motor 13 is disassembled, and the cross bar 3 is driven up by the jacking drive element 2, and the cross bar 3 can lift the motor 13. Compared with the existing method, there is no requirement for the maintenance personnel's lifting experience, and no damage is caused to the surrounding equipment. The work intensity of the maintenance personnel can be reduced, which is conducive to the rapid replacement of the mechanical seals of the marine vertical lubricating oil pump.

[0038] The support frame 1 is a steel structure frame, and the side facing the lubricating oil pump is closed, that is, it forms a plane, which is convenient for the motor 13 to be lifted up along the plane, and the side facing away from the lubricating oil pump is hollowed out for easy maintenance.

[0039] On the basis of the above, two pulleys 4 are provided, and they are respectively arranged at the two ends of the cross bar 3. It is easy to understand that, correspondingly, two steel wire ropes 5 are also provided, and two lifting rings are provided on the top of the motor 13, each connected to one of the steel wire ropes 5. Such a setting ensures the balance of the motor 13 when it is lifted, and avoids the motor 13 from swinging. Further, the base provided in this embodiment also includes a guide rod 6 and a guide seat 7. The guide seat 7 is fixed on the support frame 1. The guide rod 6 can be slidably inserted into the guide seat 7, and one end of the guide rod 6 is fixedly connected to the cross bar 3. Such a setting constrains the guide seat 7 to constrain the guide rod 6 to only move linearly up and down, thereby constraining the cross bar 3 and preventing the cross bar 3 from rotating. Further, a linear bearing is provided between the guide seat 7 and the guide rod 6, and the linear bearing is fixedly connected to the guide seat 7. The linear bearing makes the guide rod 6 move up and down more smoothly.

[0040] Two groups of guide rods 6 and guide seats 7 are provided, that is, both ends of the cross bar 3 are fixedly connected with guide rods 6, and each guide rod 6 is constrained by a guide seat 7 to only move up and down. Such a setting ensures the balance and stability of the structure.

[0041] In this embodiment, a safety bolt hole is provided on the support frame 1. When the motor 13 of the vertical lubricating oil pump is lifted to the limit position, the electrode is connected to the support frame 1 through the safety bolt 16 (refer to Figure 3 ), so as to avoid the accidental falling of the motor 13 due to mechanical failure or the like during the subsequent replacement of the mechanical seal, that is, to ensure the safety of the subsequent replacement of the mechanical seal.

[0042] Example 2

[0043] refer to Figure 4 and Figure 5This embodiment is further optimized on the basis of embodiment 1. In this embodiment, a support rod 8 is provided on the top of the motor 13 of the vertical lubricating oil pump, and a support seat 9 is provided on the top of the support frame 1. The support rod 8 can be slidably passed through the support seat 9. Similarly, a linear bearing can be provided between the support seat 9 and the support rod 8, and the linear bearing is fixedly connected to the support seat 9.

[0044] The top of the support rod 8 is connected with a stopper 11, and specifically, the stopper 11 is connected to the support rod 8 by a thread. A buffer spring 10 is provided between the stopper 11 and the support seat 9, and when the motor 13 of the vertical lubricating oil pump is installed in place, the buffer spring 10 is in a compressed state. It is worth noting that, such a setting, on the one hand, can further ensure the balance of the motor 13 when it is lifted and lowered, and avoid the motor 13 from swinging along the axis direction of the cross bar 3; on the other hand, during the lifting and lowering process of the motor 13, if a fault (such as a fault of the jacking drive element 2) or an unexpected situation (such as a break in the wire rope 5) occurs, the motor 13 falls accidentally, and the buffer spring 10 can provide a buffer to avoid the motor 13 from colliding with the connecting frame 14 in hard contact, that is, the safety of the motor 13 during the lifting and lowering process is improved.

[0045] In addition, it should be understood that the buffer spring 10 plays a role in buffering and decelerating when the motor 13 falls accidentally. When the motor 13 is normally at the bottom, under the action of gravity, the motor 13 can also accurately drop to the installation position.

[0046] Example 3

[0047] The present invention also provides a method for replacing a mechanical seal of a marine vertical lubricating oil pump, using the marine vertical lubricating oil pump base provided by Example 1 (of course, in other embodiments, the marine vertical lubricating oil pump base provided by Example 2 may also be used), comprising the following steps:

[0048] S1, dismantle the connecting bolts 15 between the motor 13 and the supporting frame 1, and between the motor 13 and the pump body 12, that is, release the fixing state of the motor 13 so that it can be lifted;

[0049] S2, lift the crossbar 3 by lifting the driving element 2, driving the motor 13 to rise;

[0050] S3. When the motor 13 rises to the limit position, the motor 13 is connected to the support frame by the safety bolt 16, that is, the motor 13 is fixed to ensure the safety when the mechanical seal is replaced later;

[0051] S4. Replace the mechanical seal and remove the safety bolt 16 after replacement;

[0052] S5. Lower the crossbar 3 by lifting the driving element 2, and lower and reinstall the motor 13.

[0053] Compared with the existing methods, the method for replacing the mechanical seal of a marine vertical lubricating oil pump provided in the present application does not require the maintenance personnel to have any lifting experience, does not cause damage to surrounding equipment, can reduce the work intensity of the maintenance personnel, and helps to achieve rapid replacement of the mechanical seal of a marine vertical lubricating oil pump.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A marine vertical lubricating oil pump base, characterized in that: include: A support frame, a pump body of the vertical lubricating oil pump is fixedly connected to the support frame, a motor of the vertical lubricating oil pump is connected to the pump body via a connecting frame, and the motor is connected to the support frame via bolts; A lifting drive element is fixed on the supporting frame; A crossbar connected to an output end of the lifting drive element; A pulley is rotatably arranged on the crossbar; as well as One end of the steel wire rope is fixedly connected to the motor of the vertical lubricating oil pump, and the other end is fixedly connected to the supporting frame after being wound around the pulley.

2. The marine vertical lubricating oil pump base according to claim 1, characterized in that: It also includes a guide rod and a guide seat. The guide seat is fixed on the support frame. The guide rod can be slidably inserted into the guide seat, and one end of the guide rod is fixedly connected to the cross bar.

3. The marine vertical lubricating oil pump base according to claim 2, characterized in that: A linear bearing is provided between the guide seat and the guide rod, and the linear bearing is fixedly connected to the guide seat.

4. The marine vertical lubricating oil pump base according to claim 2, characterized in that: Both ends of the cross bar are fixedly connected with the guide rods.

5. The marine vertical lubricating oil pump base according to claim 1, characterized in that: The pulleys are provided with two and are respectively arranged at two ends of the cross bar.

6. The marine vertical lubricating oil pump base according to any one of claims 1 to 5, characterized in that: A support rod is provided at the top of the motor of the vertical lubricating oil pump, and a support seat is provided at the top of the support frame. The support rod is slidably inserted into the support seat, and a stopper is connected to the top of the support rod. A buffer spring is provided between the stopper and the support seat, and when the motor of the vertical lubricating oil pump is installed in place, the buffer spring is in a compressed state.

7. The marine vertical lubricating oil pump base according to claim 6, characterized in that: The stopper is connected to the support rod via threads.

8. The marine vertical lubricating oil pump base according to any one of claims 1 to 5, characterized in that: The lifting driving element is a jack.

9. The marine vertical lubricating oil pump base according to any one of claims 1 to 5, characterized in that: The support frame is provided with safety bolt holes so that when the motor of the vertical lubricating oil pump is lifted to the limit position, the electrode is connected to the support frame through the safety bolts.

10. A method for replacing a mechanical seal of a marine vertical lubricating oil pump, using the marine vertical lubricating oil pump base according to claim 9, characterized in that: The following steps are involved: S1. Remove the connecting bolts between the motor and the support frame, and between the motor and the pump body; S2, lift the crossbar through the lifting drive element to drive the motor to rise; S3. When the motor rises to the limit position, the motor is connected to the support frame by safety bolts; S4. Replace the mechanical seal and remove the safety bolts after replacement; S5. Lower the crossbar by lifting the drive element, lower the motor and reinstall it.

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