CN111618559A - Device and method for disassembling and assembling mechanical seal and bearing of hot oil circulating pump - Google Patents
Device and method for disassembling and assembling mechanical seal and bearing of hot oil circulating pump Download PDFInfo
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- CN111618559A CN111618559A CN202010481234.8A CN202010481234A CN111618559A CN 111618559 A CN111618559 A CN 111618559A CN 202010481234 A CN202010481234 A CN 202010481234A CN 111618559 A CN111618559 A CN 111618559A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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Abstract
The invention provides a device and a method for disassembling and assembling a mechanical seal and a bearing of a hot oil circulating pump, wherein the device comprises a frame, an upper anti-slip retainer ring is fixedly arranged on the lower surface of a top plate of the frame, a lower anti-slip retainer ring is fixedly arranged on the upper surface of a bottom plate of the frame, a detachable base which can move up and down and is used for supporting a hot oil pump bearing box is arranged in the frame, and a through hole is formed in the detachable base; the device body further comprises a jack which can be arranged between the upper anti-skid check ring and the hot oil pump bearing box in a jacking mode, the jack is used for jacking a hot oil pump shaft in the hot oil pump bearing box and a bearing sleeved on the hot oil pump shaft, and the inner diameter of the through hole is larger than the outer diameter of the bearing. The invention adopts the hydraulic jack to replace the knocking mode to disassemble and assemble the mechanical seal and the bearing, and can greatly reduce the damage to the hot oil pump shaft.
Description
Technical Field
The invention relates to the technical field of a heat medium oil circulating system for transporting crude oil out of an oil field, in particular to a device and a method for disassembling a mechanical seal and a bearing of a hot oil circulating pump.
Background
The hot oil circulating pump is an ideal matching pump for heat exchange equipment, and its general basic structure form is a single-stage single-suction cantilever type foot supporting structure, and the inlet of the pump is axially sucked, and its outlet is vertically upwards, and is mounted on the base together with motor. The support of the high-temperature heat conduction oil pump adopts a structural form that a double-end ball bearing supports, the front end of the high-temperature heat conduction oil pump is lubricated by lubricating oil, the rear end of the high-temperature heat conduction oil pump is lubricated by lubricating grease, and the middle of the high-temperature heat conduction oil pump is provided with an oil guide pipe for observing the sealing condition and recovering heat conduction oil at any time. The hot oil circulating pump can cause mechanical seal face abrasion after long-time operation, leakage and abnormal sound conditions occur, the bearing of the hot oil circulating pump can be abraded when serious, normal operation can not be realized, and a hot medium oil circulating system can not work normally. A mechanical seal, i.e. a mechanical seal, is a general shaft seal device, which is a device for preventing fluid leakage, and is formed by at least a pair of end faces perpendicular to a rotation axis, which are kept in contact with each other and relatively slide under the action of fluid pressure and the action of elastic or magnetic force of a compensation mechanism and the cooperation of an auxiliary seal. Therefore, the heat medium circulation pump needs to be repaired in time.
However, the pump shaft is displaced and separated from the bearing by utilizing the traditional hammer chisel, so that the leaked mechanical seal can be replaced, and the hot oil pump shaft is easily deformed and damaged due to impact stress; and, if the damage reaches the degree that is difficult to restore, then need more heat transfer oil pump axle, increased maintenance time, maintenance cost and maintenance risk.
Therefore, urgent need among the prior art needs one kind to hot oil circulating pump mechanical seal and bearing when changing, can avoid hot oil to reveal, avoids safe environmental protection accident to reduce the technical scheme of maintenance duration, the safe risk when reducing the maintainer construction.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a device and a method for disassembling and assembling a mechanical seal and a bearing of a hot oil circulating pump.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a hot oil circulating pump machine seal and bearing dismounting device is composed of a device body, wherein the device body comprises a frame, an upper anti-slip retainer ring is fixedly arranged on the lower surface of a top plate of the frame, a lower anti-slip retainer ring is fixedly arranged on the upper surface of a bottom plate of the frame, a detachable base which can move up and down and is used for supporting a hot oil pump bearing box is arranged in the frame, and a through hole is formed in the detachable base; the device body further comprises a jack which can be arranged between the upper anti-skid retainer ring and the hot oil pump bearing box in a jacking mode, the jack is used for jacking a hot oil pump shaft in the hot oil pump bearing box and a bearing sleeved on the hot oil pump shaft, and the inner diameter of the through hole is larger than the outer diameter of the bearing; the device body still can set up in real including can propping hot oil pump bearing box with lower bracing piece between the anti-skidding retaining ring down and can set up in real the jack with last bracing piece between the hot-oil pump bearing box, the diameter of going up the bracing piece is greater than the internal diameter of bearing just is less than the external diameter of bearing, the diameter of lower bracing piece is greater than the internal diameter of bearing just is less than the external diameter of bearing.
At least two internal thread holes are longitudinally arranged on each longitudinal beam of the frame, the detachable base comprises a support corresponding to the longitudinal beam, mounting holes are formed in positions, corresponding to the internal thread holes, on the support, and the detachable base is fixed on the frame through bolts penetrating through the mounting holes and the corresponding internal thread holes.
The frame is formed by welding a top plate, a bottom plate and four longitudinal beams.
The length of the lower supporting rod is greater than that of the upper supporting rod.
The upper supporting rod and the lower supporting rod are steel pipes.
The invention also provides another technical scheme as follows.
A method for disassembling and assembling a mechanical seal and a bearing of a hot oil circulating pump comprises the following steps:
s1, placing the detachable base at a preset height, aligning the mounting hole in the bracket with the internal thread hole in the longitudinal beam of the frame at the corresponding height, and passing a bolt through the mounting hole and the internal thread hole at the preset height of the detachable base and screwing the bolt tightly so as to fix the detachable base at the preset height;
s2, placing the hot oil pump bearing box on the detachable base, and aligning a hot oil pump shaft with a through hole in the detachable base;
s3, adjusting a jack, screwing out a mandril and jacking the mandril with an upper anti-skid retainer ring fixedly arranged on the lower surface of a frame top plate so as to jack the top end shaft head of the hot oil pump shaft with the base of the jack, utilizing the jacking force of the jack to jack the hot oil pump shaft downwards, detaching the hot oil pump shaft from the hot oil pump bearing box, detaching the hot oil pump shaft, and detaching a bearing sleeved on the hot oil pump shaft from the shaft shoulder of the hot oil pump shaft so as to finish the mechanical seal of the hot oil circulating pump and the detachment of the bearing;
s4, detaching the bolt, detaching the detachable base, installing the machine seal on the hot oil pump shaft, then the hot oil pump shaft is arranged in a bearing box, a bearing is arranged at the shaft shoulder of the hot oil pump shaft, a lower support rod is embedded on a bearing at the lower part of the hot oil pump shaft, an upper support rod is embedded on a bearing at the upper part of the hot oil pump shaft, the jack is adjusted, the ejector rod is screwed out and is pressed against the upper anti-skid retainer ring, the top end of the upper supporting rod is in a solid state with the base of the jack, the bottom end of the lower supporting rod is in a solid state with the lower anti-skid check ring fixedly arranged on the upper surface of the frame bottom plate, the bearings at the two ends of the hot oil pump shaft are jacked into the hot oil pump bearing box under the action of the jacking force of the jack by utilizing the jacking force of the jack, and the jacking of the jack is stopped after the bearings are in place, so that the machine seal for replacing the hot oil circulating pump and the installation of the bearings are completed.
The frame is formed by welding a top plate, a bottom plate and four longitudinal beams.
The length of the lower supporting rod is greater than that of the upper supporting rod.
The upper supporting rod and the lower supporting rod are steel pipes.
Compared with the prior art, the invention has the beneficial effects that: the longitudinal beam of the frame is longitudinally provided with internal thread holes, and the bracket of the base is provided with corresponding mounting holes, so that the height of the base can be correspondingly adjusted according to the length requirement of the shaft; the mechanical seal and the bearing are disassembled and assembled by adopting a hydraulic jack instead of knocking, so that the damage to a hot oil pump shaft can be greatly reduced; with the help of the reaction force of frame and steel pipe, can practice thrift the manpower, improve dismouting efficiency.
Drawings
Fig. 1 is a schematic structural view in the disassembling process of the present invention.
Fig. 2 is a schematic view of the structure of the present invention during installation.
Figure 3 is a top view of the removable base.
Fig. 4 is a schematic view of a lower strut.
FIG. 5 is a schematic view of an upper strut.
Reference numerals: 1-frame, 2-jack, 3-hot oil pump bearing box, 4-hot oil pump shaft, 5-detachable base, 6-internal thread hole, 7-bolt, 8-lower support rod, 9-upper support rod, 10-through hole, 11-bracket, 12-upper anti-skid retainer ring, 13-lower anti-skid retainer ring, 14-bearing, 15-mounting hole.
Detailed Description
The invention is further illustrated by the following specific embodiments.
The hot oil circulating pump machine seal and bearing dismounting device shown in fig. 1-5 is composed of a device body, wherein the device body comprises a frame 1, and the frame 1 is formed by welding a top plate, a bottom plate and four longitudinal beams. An upper anti-skid retainer ring 12 is fixedly arranged on the lower surface of a top plate of the frame 1, a lower anti-skid retainer ring 13 is fixedly arranged on the upper surface of a bottom plate of the frame 1, a detachable base 5 which can move up and down and is used for supporting a hot oil pump bearing box 3 is arranged in the frame 1, and a through hole 10 is formed in the detachable base 5; the device body still includes can push up real jack 2 that sets up between last anti-skidding retaining ring 12 and hot oil pump bearing box 3, adopts hydraulic jack in this embodiment, and the jacking force reaches 3 tons. The jack 2 is used for ejecting a hot oil pump shaft 4 in a hot oil pump bearing box 3 and a bearing 14 sleeved on the hot oil pump shaft 4, and the inner diameter of the through hole 10 is larger than the outer diameter of the bearing 14; the device body still includes can push up the real lower support rod 8 that sets up between hot oil pump bearing box 3 and lower anti-skidding retainer ring 13, and can push up real last bracing piece 9 that sets up between jack 2 and hot oil pump bearing box 3, the diameter of going up bracing piece 9 is greater than the internal diameter of bearing 14 and is less than the external diameter of bearing 14, the diameter of lower support rod 8 is greater than the internal diameter of bearing 14 and is less than the external diameter of bearing 14, the length of lower support rod 8 is greater than last bracing piece 9, it is the steel pipe to go up bracing piece 9 and lower support rod 8. The upper anti-slip retainer ring 12 and the lower anti-slip retainer ring 13 are both made of materials with large surface friction force, so that the jack 2 or a steel pipe is prevented from slipping and generating danger.
There are at least two internal thread holes 6 along longitudinal arrangement on every longeron of frame 1, can dismantle base 5 includes the support 11 corresponding with the longeron, the position corresponding with internal thread hole 6 on support 11 is provided with mounting hole 15, can dismantle base 5 fixes on frame 1 through the bolt 7 that runs through mounting hole 15 and corresponding internal thread hole 6, in this embodiment, internal thread hole 6 is 3 rows in total, longitudinal arrangement has three internal thread hole 6 on every longeron promptly, equidistant setting each other, mounting hole 15 on the support 11 aligns the internal thread hole 6 of co-altitude not, can come the use height of vertical adjustment detachable base 5 according to the actual length of hot oil pump axle 4. When the hot oil pump bearing box 3 is installed, the back wheel end of the hot oil pump shaft 4 faces upwards, the impeller end faces downwards, and the shaft shoulders of the back wheel end and the impeller end of the hot oil pump shaft 4 are sleeved with the bearings 14; the bearing 14 is sleeved on shaft shoulders at the upper end and the lower end of the hot oil pump shaft 4, and a pair of machine seals is arranged in the hot oil pump bearing box 3 and is vertical to the axis of the hot oil pump shaft 4.
When the hot oil pump is disassembled, the top rod of the jack 2 props against the upper anti-skid retainer ring 12 to push the hot oil pump shaft 4 out of the hot oil pump bearing box 3, the bearings 14 at the back wheel end and the impeller end are separated from the hot oil pump shaft 4, and the bearings 14 penetrate through the through holes 10 because the inner diameter of the through holes 10 is larger than the outer diameter of the bearings 14, so that the hot oil pump is disassembled; the mechanical seal of the hot oil pump bearing housing 3 can also be easily removed. When a new replaced mechanical seal and a new bearing are installed, the upper supporting rod 9 and the lower supporting rod 8 can be just embedded between the inner diameter and the outer diameter of the bearing, so that the bearing can be just jacked between the jack 2 and the hot oil pump bearing box 3 and between the hot oil pump bearing box 3 and the lower anti-slip retainer ring 13, and the jacking force of the jack 2 is utilized to jack the bearing 14 to a target position in the hot oil pump bearing box 3.
The method for disassembling and assembling the mechanical seal and the bearing of the hot oil circulating pump by adopting the disassembling and assembling device comprises the following steps:
s1, placing the detachable base 5 at a preset height, aligning the mounting hole 15 on the bracket 11 with the internal thread hole 6 at the corresponding height on the longitudinal beam of the frame 1, and passing the bolt 7 through the mounting hole 15 and the internal thread hole 6 at the preset height of the detachable base 5 and screwing, thereby fixing the detachable base 5 at the preset height;
s2, placing the hot oil pump bearing box 3 on the detachable base 5, and aligning the hot oil pump shaft 4 with the through hole 10 in the detachable base 5;
s3, adjusting the jack 2, screwing out the ejector rod and jacking the ejector rod with an upper anti-slip retainer ring 12 fixedly arranged on the lower surface of a top plate of the frame 1, so that a top end shaft head of the hot oil pump shaft 4 and a base of the jack 2 are jacked to be solid, the hot oil pump shaft 4 is jacked downwards by utilizing jacking force of the jack 2, the hot oil pump shaft 4 is separated from the hot oil pump bearing box 3, the hot oil pump shaft 4 is detached, and a bearing 14 sleeved on the hot oil pump shaft 4 is separated from a shaft shoulder of the hot oil pump shaft 4, so that the mechanical seal of the hot oil circulating pump and the detachment of the bearing 14 are completed;
s4, detaching the bolt 7, detaching the detachable base 5, installing the machine seal on the hot oil pump shaft 4, then the hot oil pump shaft 4 is arranged in the bearing box 3, the bearing 14 is arranged at the shaft shoulder of the hot oil pump shaft 4, a lower support rod 8 is embedded on a bearing 14 at the lower part of the hot oil pump shaft 4, an upper support rod 9 is embedded on the bearing 14 at the upper part of the hot oil pump shaft 4, the jack 2 is adjusted, the top rod is screwed out and is jacked with an upper anti-skid retainer ring 12, thereby make the top of last bracing piece 9 and the base of jack 2 top real, simultaneously, make the bottom of lower strut 8 and the fixed lower anti-skidding retaining ring 13 that sets up on frame 1 bottom plate upper surface top real, utilize the jacking force of jack 2, make lower strut 8 and last bracing piece 9 under the jacking force effect of jack 2, push up the bearing 14 of hot oil pump shaft 4 both ends into hot oil pump bearing box 3, stop the jacking of jack 2 after targetting in place, thereby accomplish the mechanical seal of hot oil circulating pump new change and the installation of bearing.
The above description is only for the preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes and modifications without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (9)
1. A dismounting device for a machine seal and a bearing of a hot oil circulating pump is composed of a device body and is characterized in that the device body comprises a frame (1), an upper anti-slip retainer ring (12) is fixedly arranged on the lower surface of a top plate of the frame (1), a lower anti-slip retainer ring (13) is fixedly arranged on the upper surface of a bottom plate of the frame (1), a detachable base (5) which can move up and down and is used for supporting a hot oil pump bearing box (3) is arranged in the frame (1), and a through hole (10) is formed in the detachable base (5); the device body further comprises a jack (2) which can be arranged between the upper anti-skid retainer ring (12) and the hot oil pump bearing box (3) in a jacking mode, the jack (2) is used for jacking a hot oil pump shaft (4) in the hot oil pump bearing box (3) and a bearing (14) sleeved on the hot oil pump shaft (4), and the inner diameter of the through hole (10) is larger than the outer diameter of the bearing (14); the device body still including can set up on the top hot oil pump bearing case (3) with lower support bar (8) between lower anti-skidding retaining ring (13) and can set up on the top are in jack (2) with last bracing piece (9) between hot oil pump bearing case (3), the diameter of going up bracing piece (9) is greater than the internal diameter of bearing (14) and being less than the external diameter of bearing (14), the diameter of lower support bar (8) is greater than the internal diameter of bearing (14) and being less than the external diameter of bearing (14).
2. An oil hot circulation pump machine seal and bearing dismounting device according to claim 1, characterized in that at least two internal thread holes (6) are arranged on each longitudinal beam of the frame (1) along the longitudinal direction, the detachable base (5) comprises a bracket (11) corresponding to the longitudinal beam, a mounting hole (15) is arranged on the bracket (11) corresponding to the internal thread hole (6), and the detachable base (5) is fixed on the frame (1) through a bolt (7) penetrating through the mounting hole (15) and the corresponding internal thread hole (6).
3. A device for assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 1, wherein the frame (1) is formed by welding a top plate, a bottom plate and four longitudinal beams.
4. A device for assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 1, wherein the length of the lower support rod (8) is longer than that of the upper support rod (9).
5. A device for assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 1, characterized in that the upper support rod (9) and the lower support rod (8) are both steel pipes.
6. A method for disassembling and assembling a mechanical seal and a bearing of a hot oil circulating pump is characterized by comprising the following steps:
s1, placing the detachable base (5) at a preset height, aligning the mounting hole (15) in the bracket (11) with the internal thread hole (6) in the longitudinal beam of the frame (1) at a corresponding height, and penetrating and tightening a bolt (7) through the mounting hole (15) and the internal thread hole (6) at the preset height of the detachable base (5), so as to fix the detachable base (5) at the preset height;
s2, placing the hot oil pump bearing box (3) on the detachable base (5), and aligning the hot oil pump shaft (4) with the through hole (10) in the detachable base (5);
s3, adjusting a jack (2), screwing out a mandril and jacking up the mandril with an upper anti-skid retainer ring (12) fixedly arranged on the lower surface of a top plate of the frame (1), so that a top end shaft head of the hot oil pump shaft (4) and a base of the jack (2) are jacked up, the hot oil pump shaft (4) is jacked up downwards by utilizing the jacking force of the jack (2), the hot oil pump shaft (4) is separated from a hot oil pump bearing box (3), detaching the hot oil pump shaft (4), and a bearing (14) sleeved on the hot oil pump shaft (4) is separated from a shaft shoulder of the hot oil pump shaft (4), so that the mechanical seal of the hot oil circulating pump and the detachment of the bearing (14) are completed;
s4, dismounting the bolt (7), dismounting the detachable base (5), installing a machine seal on the hot oil pump shaft (4), then loading the hot oil pump shaft (4) into the bearing box (3), installing the bearing (14) at the shaft shoulder of the hot oil pump shaft (4), embedding the lower support rod (8) on the bearing (14) at the lower part of the hot oil pump shaft (4), embedding the upper support rod (9) on the bearing (14) at the upper part of the hot oil pump shaft (4), adjusting the jack (2), screwing out the top rod and jacking up the upper anti-slip collar (12), so that the top end of the upper support rod (9) and the base of the jack (2) are jacked up, and simultaneously jacking up the bottom end of the lower support rod (8) and the lower anti-slip collar (13) fixedly arranged on the upper surface of the bottom plate of the frame (1), and utilizing the jacking force of the jack (2) to enable the lower support rod (8) and the upper support rod (9) to be jacked up under the jacking force of the jack (2), and (3) jacking the bearings (14) at the two ends of the hot oil pump shaft (4) into the hot oil pump bearing box (3), and stopping jacking the jack (2) after the bearings are in place, so that the installation of a new machine seal and a new bearing of the hot oil circulating pump is completed.
7. A method for assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 6, characterized in that the frame (1) is formed by welding a top plate, a bottom plate and four longitudinal beams.
8. A method of assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 6, characterized in that the length of the lower support rod (8) is longer than that of the upper support rod (9).
9. A method for assembling and disassembling a mechanical seal and a bearing of a hot oil circulating pump according to claim 6, characterized in that the upper support rod (9) and the lower support rod (8) are both steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481234.8A CN111618559A (en) | 2020-05-31 | 2020-05-31 | Device and method for disassembling and assembling mechanical seal and bearing of hot oil circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481234.8A CN111618559A (en) | 2020-05-31 | 2020-05-31 | Device and method for disassembling and assembling mechanical seal and bearing of hot oil circulating pump |
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| Publication Number | Publication Date |
|---|---|
| CN111618559A true CN111618559A (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010481234.8A Pending CN111618559A (en) | 2020-05-31 | 2020-05-31 | Device and method for disassembling and assembling mechanical seal and bearing of hot oil circulating pump |
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| CN (1) | CN111618559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086763A (en) * | 2023-03-20 | 2023-05-09 | 中国航空工业集团公司沈阳空气动力研究所 | Large continuous wind tunnel axial flow compressor bearing overhauling method and overhauling device |
-
2020
- 2020-05-31 CN CN202010481234.8A patent/CN111618559A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086763A (en) * | 2023-03-20 | 2023-05-09 | 中国航空工业集团公司沈阳空气动力研究所 | Large continuous wind tunnel axial flow compressor bearing overhauling method and overhauling device |
| CN116086763B (en) * | 2023-03-20 | 2023-06-06 | 中国航空工业集团公司沈阳空气动力研究所 | Large continuous wind tunnel axial flow compressor bearing overhauling method and overhauling device |
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