CN114434088B - Device and method for disassembling shaft sleeve of centrifugal pump - Google Patents
Device and method for disassembling shaft sleeve of centrifugal pump Download PDFInfo
- Publication number
- CN114434088B CN114434088B CN202011228766.7A CN202011228766A CN114434088B CN 114434088 B CN114434088 B CN 114434088B CN 202011228766 A CN202011228766 A CN 202011228766A CN 114434088 B CN114434088 B CN 114434088B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- shaft sleeve
- unit
- locking
- shrinkage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Abstract
The application provides a device and a method for disassembling a shaft sleeve of a centrifugal pump, and belongs to the technical field of petroleum gathering and transportation equipment engineering. The device provided by the embodiment of the application comprises a locking unit, a sleeve unit and a drawing unit which are sequentially connected, wherein a shrinkage sleeve and a clamp in the locking unit are used for sleeving and shrinking on a shaft sleeve so as to fix the device on the shaft sleeve, the sleeve unit is used for sleeving on the shaft sleeve and heating the shaft sleeve, so that the shaft sleeve is easier to detach after being heated and expanded, a heavy hammer in the drawing unit is sleeved on a pull rod and is stopped by a stopping piece, after the device is installed, the heavy hammer is quickly moved, and the heavy hammer is impacted against the stopping piece by utilizing the inertia of the heavy hammer so as to drive the whole device to move outwards, thereby driving the shaft sleeve to move outwards.
Description
Technical Field
The application relates to the technical field of petroleum gathering and transportation equipment engineering, in particular to a device and a method for disassembling a shaft sleeve of a centrifugal pump.
Background
In the oil-gas gathering and transportation system, the centrifugal pump is used as one of important equipment, the use frequency is extremely high, and the requirement on the sealing performance of the centrifugal pump is also high, so that the centrifugal pump needs to be frequently overhauled and maintained.
At present, a copper bar or a flat spade is commonly used for prying the shaft sleeve, the force is applied to a gap between the shaft sleeve and the main shaft along different positions of the circumferential direction of the shaft sleeve by changing the position of the copper bar or the flat spade, and the shaft sleeve is gradually separated from the main shaft by prying the gap.
Above-mentioned bar copper or flat spade is in the in-process of dismantling the axle sleeve, because bar copper or flat spade supports in the gap between the bottom of axle sleeve and main shaft, and this axle sleeve and main shaft's area of force are less, and bar copper or flat spade application of force in-process make the axle sleeve receive the damage and scrap easily, and still very big probably damage the main shaft moreover, and dismantle inefficiency, staff's intensity of labour is big.
Disclosure of Invention
The embodiment of the application provides a device and a method for disassembling a shaft sleeve of a centrifugal pump, which can avoid damaging the shaft sleeve and a main shaft in the process of disassembling the shaft sleeve, has high disassembly efficiency, reduces the labor intensity of staff, improves the maintenance efficiency of equipment, and ensures the normal operation and safe production of the equipment. The technical scheme is as follows:
in one aspect, a centrifugal pump shaft sleeve dismounting device is provided, the device comprising: the device comprises a locking unit, a sleeve unit and a drawing unit;
the locking unit, the sleeve unit and the drawing unit are sequentially connected;
the locking unit comprises a shrinkage sleeve and a clamp, wherein the shrinkage sleeve is in a cylinder shape and is sleeved on the shaft sleeve, the cylinder wall of the shrinkage sleeve is provided with an axial through groove, and the clamp is sleeved on the shrinkage sleeve, so that the shrinkage sleeve is shrunk on the shaft sleeve;
the sleeve unit comprises a heating sleeve, a heating sleeve and a heating sleeve, wherein the heating sleeve is used for being sleeved on the shaft sleeve and heating the shaft sleeve;
the drawing unit comprises an end cover, a pull rod, a heavy hammer and a stop piece, wherein the end cover, the pull rod and the stop piece are sequentially connected, the diameters of the end cover and the stop piece are both larger than that of the pull rod, and the heavy hammer is sleeved on the pull rod.
In one possible design, the outer wall of the shrink sleeve tapers in size from the first end to the second end.
In one possible design, the second end of the shrink sleeve further has a connection portion with external threads thereon;
the locking unit also comprises an adjusting nut, wherein the adjusting nut is internally provided with an internal thread matched with the external thread;
the adjusting nut is fixed on the connecting part in a threaded mode and is used for clamping the clamp.
In one possible design, the inner wall of the heating jacket is surrounded by a resistance wire.
In one possible design, the sleeve unit further comprises a barrel;
the cylinder body is sleeved on the outer wall of the heating sleeve, and two ends of the cylinder body are used for being connected with the locking unit and the drawing unit respectively.
In one possible design, at least two viewing holes are provided in the side wall of the barrel.
In one possible design, at least two locking holes are arranged on one end, close to the locking unit, of the side wall of the cylinder;
each locking hole is provided with a locking plate.
In one possible design, the side wall of the cylinder also has a number of placement holes equal to the number of locking plates for receiving the locking plates.
In one possible design, the tie rod comprises: a jackscrew and a movable rod;
the jackscrew is connected with the end cover;
the jackscrew is connected with the movable rod through a pin.
In one aspect, a method for disassembling a shaft sleeve of a centrifugal pump is provided, which is applied to a device for disassembling a shaft sleeve of a centrifugal pump provided in any one of the possible designs, and the method comprises the following steps:
sleeving a shrink sleeve in the locking unit on the shaft sleeve;
the clamp is sleeved on the shrinkage sleeve, so that the shrinkage sleeve is shrunk on the shaft sleeve;
and moving the heavy hammer towards the dismounting direction of the shaft sleeve to enable the heavy hammer to strike the stop piece, thereby pulling the shaft sleeve outwards.
According to the technical scheme provided by the embodiment of the application, the device comprises the locking unit, the sleeve unit and the drawing unit which are sequentially connected, wherein the shrinkage sleeve and the clamp in the locking unit are used for being sleeved and contracted on the shaft sleeve so as to fix the device on the shaft sleeve, the sleeve unit is used for being sleeved on the shaft sleeve and heating the shaft sleeve, so that the shaft sleeve is easier to detach after being heated and expanded, the heavy hammer in the drawing unit is sleeved on the pull rod and is stopped by the stop piece, after the device is installed, the heavy hammer is quickly moved, and the inertia of the heavy hammer is utilized to enable the heavy hammer to strike the stop piece so as to drive the whole device to move outwards, thereby driving the shaft sleeve to move outwards.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a dismounting device for a shaft sleeve of a centrifugal pump according to an embodiment of the present application;
FIG. 2 is a flowchart of a method for disassembling a pump shaft sleeve of a centrifugal pump according to an embodiment of the application.
1-a locking unit;
11-shrink sleeve;
111-through grooves;
112-a connection;
12-clamping hoop;
13-adjusting the nut;
a 2-sleeve unit;
21-heating jacket;
22-a cylinder;
221-a viewing port;
222-locking holes;
223-locking plate;
224-placement hole;
3-drawing units;
31-end caps;
32-a pull rod;
321-jackscrews;
322-movable bar;
323 pins;
33-weight;
34-stops.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
In the present application, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Fig. 1 is a schematic structural diagram of a device for disassembling a shaft sleeve of a centrifugal pump according to an embodiment of the present application, please refer to fig. 1, the device includes: a locking unit 1, a sleeve unit 2 and a drawing unit 3; the locking unit 1, the sleeve unit 2 and the drawing unit 3 are sequentially connected; the locking unit 1 comprises a shrinkage sleeve 11 and a clamp 12, wherein the shrinkage sleeve 11 is in a cylinder shape and is used for being sleeved on a shaft sleeve, an axial through groove 111 is formed in the cylinder wall of the shrinkage sleeve 11, and the clamp 12 is used for being sleeved on the shrinkage sleeve 11, so that the shrinkage sleeve 11 is shrunk on the shaft sleeve; the sleeve unit 2 comprises a heating jacket 21 for being fitted over the shaft sleeve and heating the shaft sleeve; the drawing unit 3 comprises an end cover 31, a pull rod 32, a heavy hammer 33 and a stop piece 34, wherein the end cover 31, the pull rod 32 and the stop piece 34 are sequentially connected, the diameters of the end cover 31 and the stop piece 34 are larger than the diameter of the pull rod 32, and the heavy hammer 33 is sleeved on the pull rod 32.
The structure and the working principle of the device are described in detail below:
in this device, the locking unit 1 is used to lock onto the sleeve, by which a large friction force can be generated between the shrink sleeve 11 and the sleeve during pulling of the sleeve outwards based on the pressure between the shrink sleeve 11 and the sleeve in the locking unit 1, in order to pull the sleeve out of the housing of the centrifugal pump.
After the shrink sleeve 11 is clamped by the clamp 12, the clamp 12 can shrink, so that the material of the shrink sleeve 11 can be extruded to the through groove 111 by shrinking the clamp 12, the inner diameter of the shrink sleeve 11 is reduced by shrinking the through groove 111, and the shrink sleeve 11 is shrunk on the shaft sleeve, so that the shrink sleeve 11 and the clamp 12 can be tightly sleeved on the shaft sleeve, and the subsequent pulling out of the shaft sleeve by outwards stretching the device is facilitated.
The clamping hoop 12 can be a spring clamping hoop 12, namely, is made of manganese steel, has certain elasticity, is convenient and simple to use and disassemble, is uniformly tightened and can be repeatedly used.
And to sleeve unit 2, its position is in the outside of locking unit 1 for through heating jacket 21 to barrel 22 heating, make it be heated back inflation, the internal diameter grow, thereby be convenient for with its and main shaft separation, thereby through heating jacket 21, reduced the degree of difficulty of using the device to dismantle the axle sleeve, make the dismantlement process be convenient for operate, thereby can improve dismantlement efficiency, save time also uses manpower sparingly.
The device provided by the embodiment of the application comprises a locking unit 1, a sleeve unit 2 and a drawing unit 3 which are sequentially connected, wherein a shrinkage sleeve 11 and a clamp 12 in the locking unit 1 are used for being sleeved and contracted on a shaft sleeve so as to fix the device on the shaft sleeve, the sleeve unit 2 is used for being sleeved on the shaft sleeve and heating the shaft sleeve, so that the shaft sleeve is easier to detach after being heated and expanded, a heavy hammer 33 in the drawing unit 3 is sleeved on a pull rod 32 and is stopped by a stop piece 34, after the device is installed, the heavy hammer 33 is quickly moved, the heavy hammer 33 is impacted against the stop piece 34 by utilizing the inertia of the heavy hammer 33, so that the whole device is driven to move outwards, the shaft sleeve is driven to move outwards, the device does not damage the shaft sleeve and the main shaft in the process of detaching the shaft sleeve, the detaching efficiency is high, the labor intensity of staff is reduced, the maintenance efficiency of equipment is improved, and the normal operation and the safe production of the equipment is ensured.
The structure and the working principle of each part of the device are described in detail as follows:
in the device, the locking unit 1, the sleeve unit 2 and the drawing unit 3 may be coaxially arranged, thereby facilitating the manufacture and installation of the device itself, further, the locking unit 1, the sleeve unit 2 and the drawing unit 3 coincide with the axis of the sleeve, and the locking unit 1, the sleeve unit 2 and the drawing unit 3 may be connected by a detachable structure, for example, by screwing.
The specific results of the locking unit 1 are detailed below:
the shrink sleeve 11 is made of thick-wall steel pipes, and the inner wall of the shrink sleeve is a smooth curved surface which can be matched with the shape of the shaft sleeve, so that the shrink sleeve can be more matched with the shaft sleeve when sleeved on the shaft sleeve. The outer wall of the shrink sleeve 11 has a through groove 111 in the axial direction thereof for use as a deformation space when the shrink sleeve 11 is shrunk.
In one possible design, the shrink sleeve 11 may be further processed by a heat treatment process after being formed to have better elasticity, so that the shrink sleeve 11 can be more tightly locked on the sleeve.
In one possible design, the outer wall of the shrink sleeve 11 gradually decreases in size from the first end to the second end, that is, the outer wall of the shrink sleeve 11 has a certain taper, and the smooth curved surface with taper between the first end and the second end of the shrink sleeve 11 may be machined by turning or other manners, which is not limited in this embodiment.
The clamp 12 is a circular ring made of stainless steel, the outer wall is a smooth curved surface, the inner wall is a smooth taper curved surface opposite to the outer wall conical surface of the shrink sleeve 11, and the clamp 12 is connected with the shrink sleeve in a matched manner when the device is installed.
In one possible design, the second end of the shrink sleeve 11 also has a connection 112, the connection 112 having external threads; the locking unit 1 further comprises an adjusting nut 13, wherein the adjusting nut 13 is internally provided with internal threads which are matched with the external threads; the adjusting nut 13 is screwed onto the connecting portion 112 for locking the clip 12.
Specifically, the length ratio between the shrink sleeve 11 and the connection portion 112 may be set, for example, may be 4:1, the connecting portion 112 has a cylindrical shape with a constant diameter, thereby facilitating the turning of external threads on the outer surface of the connecting portion 112.
The adjusting nut 13 is made of stainless steel, and the adjusting nut 13 is provided with threads matched with the end part of the sleeve unit 2 at one end connected with the sleeve unit 2.
The specific structure of the sleeve unit 2 is described in detail below:
in one possible design, the inner wall of the heating jacket 21 is surrounded by a resistance wire which is connected to a power source by a cable, so that by energizing the resistance wire with the power source, the resistance wire heats up to heat the jacket.
In one possible design, the sleeve unit 2 further comprises a barrel 22; the cylinder 22 is sleeved on the outer wall of the heating sleeve 21, and two ends of the cylinder 22 are used for respectively connecting the locking unit 1 and the drawing unit 3.
In the above structure, the cylinder 22 is coaxial with the heating jacket 21, and is used for protecting the heating jacket 21, reducing the heat emitted by the heating jacket 21 from being emitted outside the cylinder 22, and saving energy. Both ends of the cylinder 22 may be provided with threads for connecting the locking unit 1 and the drawing unit 3.
When in use, the heating sleeve 21 can slide in a certain range along the axial direction according to different heating positions, the outside of the heating sleeve 21 is made into a circular ring shape by using heat insulation materials, and the inside of the heating sleeve is provided with heat resistance wires and uniformly arranged on the inner wall of the circular ring.
In one possible design, a power supply slot is also connected in series with the cable connected with the heating jacket 21, and the power supply slot can be fixed on the outer wall of the cylinder 22, and the power supply slot is subjected to special insulation treatment to ensure that the safety performance of the power supply slot meets the insulation requirement. The sleeve unit 2 further comprises a power plug, wherein the outer part of the power plug is made of an insulating material, the appearance of the power plug corresponds to that of the power supply slot of the cylinder 22, and a conductor is arranged inside the power plug to be connected with a power line for supplying power to the heating jacket 21. When the power supply socket is used, the power plug connected with a power supply is inserted into the power supply socket, so that the power supply to the resistance wire can be realized.
In one possible design, the sidewall of the barrel 22 is provided with at least two observation holes 221 to form a hollow shape, and by providing the observation holes 221, on one hand, an operator can observe the components inside the barrel 22 conveniently, and on the other hand, the opening process of the observation holes 221 needs to dig out a part of the material of the barrel 22, so that the material can be saved, and the overall weight of the device can be reduced.
In particular, the at least two viewing holes 221 may be symmetrically disposed on the side wall of the barrel 22, so that the device remains symmetrical in weight, avoiding deflection of the device due to the influence of gravity itself during use.
In one possible design, at least two locking holes 222 are provided on the side wall of the cylinder 22 at the end near the locking unit 1; each of the locking holes 222 has a locking plate 223 therein.
After the sleeve has been removed using the device and in the first stage the sleeve has been pulled a certain distance from the inner chamber of the centrifugal pump, the locking unit 1 can be removed from the sleeve first and the sleeve can be removed in the second stage using the locking plate 223 on the cylinder 22.
The process of further removing the sleeve using the locking plate 223 on the barrel 22 may be: the locking plate 223 is detached from the locking hole 222, the cylinder 22 is pushed inwards along the shaft sleeve, after the locking hole 222 passes over the inner end surface of the shaft sleeve, the locking plate 223 is inserted into the locking hole 222, so that the locking plate 223 can clamp the inner end surface of the shaft sleeve, when the cylinder 22 in the device is pulled outwards, the locking plate 223 applies force to the inner end surface of the shaft sleeve to drive the shaft sleeve to move outwards, and the shaft sleeve is further detached by using a simpler and more stable force application mode.
In one possible design, the side wall of the cylinder 22 also has a number of placement holes 224 equal to the number of locking plates 223 for receiving the locking plates 223.
Based on the above structure, in the transportation, storage or first-stage disassembly step, since the cylinder 22 needs to be sleeved outside the sleeve, but cannot lock the sleeve, the locking plate 223 is not placed in the locking hole 222, but is placed in the placement hole 224. Specifically, the shape of the placement hole 224 may be adapted to the locking plate 223, and a corresponding fixing structure may be provided on the placement hole 224 to fix the locking plate 223, for example, by fixing with a magnet, which is not limited in this embodiment.
In one possible design, the locking plate 223 may be cut from the cylinder 22, and after the locking plate 223 is cut, the hole formed by cutting the locking plate 223 is the placement hole 224 or the observation hole 221, which can save materials effectively by using local materials.
The specific results of the drawing unit 3 are detailed below:
in one possible design, the tie rod 32 includes: a jackscrew 321 and a movable rod 322; the jackscrew 321 is connected with the end cover 31; the jackscrew 321 is connected with the movable rod 322 through a pin 323.
Specifically, the end of the top wire 321 has a groove, the end of the movable rod 322 corresponding to the top wire 321 has a protrusion matching the groove, the protrusion and the groove have pin holes at corresponding positions, and the protrusion and the groove are connected by inserting the pin 323 into the corresponding pin holes, thereby connecting the movable rod 322 with the top wire 321.
The jackscrew 321 is formed by processing a steel cylinder, and the threaded head part facing one end of the end cover 31 is processed into a certain taper, and can be matched with a central hole at the front end of the pump shaft in use, so that the positioning function is realized.
The pin 323 is made of a steel cylinder, and when the pin 323 is used for connecting the jackscrew 321 and the movable rod 322, the axis of the pin 323 is perpendicular to the axes of the jackscrew 321 and the movable rod 322.
The movable rod 322 is made of a steel cylinder, and can rotate within a certain angle according to the requirement on the basis of being connected with the jackscrew 321 through the pin 323. When the movable rod 322 is in a straight line with the jackscrew 321, the axis of the movable rod is in the same straight line with the central hole on the end cover 31 and the axis of the cylinder 22.
The end cover 31 is made of a 45# steel cylinder, one end of the end cover is turned with external threads, the end cover is connected with the end part of the cylinder 22 through internal threads, the end cover is integrated, and a threaded hole is machined in the center of the end cover 31 and is used for being matched with the jackscrew 321.
The weight 33 is made of steel cylinder, the center of the weight is provided with a through hole, the diameter of the through hole is slightly larger than the outer diameters of the jackscrew 321 and the movable rod 322, and the through hole is arranged on the jackscrew 321.
The stopper 34 may be a solid steel ball, and the stopper 34 is formed by welding the ball to the end of the movable rod 322, which serves to prevent the weight 33 from sliding out.
In the practical use process, firstly, after the locking unit 1, the sleeve unit 2 and the drawing unit 3 are integrally formed through threaded connection, the locking unit 1 is sleeved on the outer wall of the shaft sleeve to be disassembled, the shrinkage sleeve 11 is tightly held by the shaft sleeve through rotating the adjusting nut 13, if the corrosion between the shaft sleeve and the main shaft is serious, a power supply is required to be connected, the heating sleeve 21 is used for heating the shaft sleeve, and then the jackscrew 321 or the heavy hammer 33 is used for rapidly disassembling the shaft sleeve, so that the equipment maintenance efficiency is improved, and the safety production is ensured.
In one possible design, the tie rod 32 includes: a jackscrew 321 and a movable rod 322; the jackscrew 321 is connected with the end cover 31; the jackscrew 321 is connected with the movable rod 322 through a pin 323. Specifically, the end of the top wire 321 has a groove, the end of the movable rod 322 corresponding to the top wire 321 has a protrusion matching the groove, the protrusion and the groove have pin holes at corresponding positions, and the protrusion and the groove are connected by inserting the pin 323 into the corresponding pin holes, thereby connecting the movable rod 322 with the top wire 321.
Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein.
The device provided by the embodiment of the application comprises a locking unit 1, a sleeve unit 2 and a drawing unit 3 which are sequentially connected, wherein a shrinkage sleeve 11 and a clamp 12 in the locking unit 1 are used for being sleeved and contracted on a shaft sleeve so as to fix the device on the shaft sleeve, the sleeve unit 2 is used for being sleeved on the shaft sleeve and heating the shaft sleeve, so that the shaft sleeve is easier to detach after being heated and expanded, a heavy hammer 33 in the drawing unit 3 is sleeved on a pull rod 32 and is stopped by a stop piece 34, after the device is installed, the heavy hammer 33 is quickly moved, the heavy hammer 33 is impacted against the stop piece 34 by utilizing the inertia of the heavy hammer 33, so that the whole device is driven to move outwards, the shaft sleeve is driven to move outwards, the device does not damage the shaft sleeve and the main shaft in the process of detaching the shaft sleeve, the detaching efficiency is high, the labor intensity of staff is reduced, the maintenance efficiency of equipment is improved, and the normal operation and the safe production of the equipment is ensured.
Before the device is used for disassembling the shaft sleeve, the parts, which are blocked outside the shaft sleeve, of the centrifugal pump are required to be disassembled. Specifically, it may be:
step 1: and removing the front end cover of the bearing by using a first fastening bolt of the front and rear bearing end covers of the wrench.
Step 2: and (5) detaching the second fastening bolt by using a spanner, and detaching the bracket.
Step 3: and the two bearing lock nuts are sequentially disassembled by using a hook spanner to rotate in the anticlockwise direction, and the bearings are pulled out by using a chest expander.
Step 4: and taking down the rear end cover and the short sleeve of the bearing.
Step 5: and (3) detaching the third fastening bolt of the packing gland by using a double offset ring spanner or an open spanner, and taking down the packing gland.
Step 6: after the fourth fastening bolt is detached by using the double offset ring spanner, the tail section is knocked and hit by using the copper rod and then is taken down, and the shaft sleeve can be completely seen at the moment.
Although the surface of the shaft sleeve is extremely smooth and has no proper acting point or is extremely difficult to disassemble due to corrosion, the method and the device for disassembling the shaft sleeve of the centrifugal pump can be used for rapidly taking down the shaft sleeve 13 on the premise of not damaging the shaft sleeve, so that the material consumption and the workload of operators are reduced, and the design requirement is met. The method of using the device is described below.
Fig. 2 is a flowchart of a method for disassembling a shaft sleeve of a centrifugal pump according to an embodiment of the present application, referring to fig. 2, the method is applied to a device for disassembling a shaft sleeve of a centrifugal pump provided in any one of the possible designs described above, and the method includes:
201. the shrink sleeve 11 in the locking unit 1 is sleeved on the shaft sleeve.
202. The clamp 12 is fitted over the shrink sleeve 11 so that the shrink sleeve 11 is tightened over the sleeve.
203. The weight 33 is moved in the direction of detaching the sleeve, so that the weight 33 hits the stopper 34, thereby pulling the sleeve outward.
In one possible implementation, after the sleeve has been pulled a certain distance from the inner cavity of the centrifugal pump in the first stage, the locking unit 1 may be removed from the sleeve first, and the sleeve may be removed in a second stage using the locking plate 223 on the barrel 22.
The process of further removing the sleeve using the locking plate 223 on the barrel 22 may be: the locking plate 223 is detached from the locking hole 222, the cylinder 22 is pushed inwards along the shaft sleeve, after the locking hole 222 passes over the inner end surface of the shaft sleeve, the locking plate 223 is inserted into the locking hole 222, so that the locking plate 223 can clamp the inner end surface of the shaft sleeve, when the cylinder 22 in the device is pulled outwards, the locking plate 223 applies force to the inner end surface of the shaft sleeve to drive the shaft sleeve to move outwards, and the shaft sleeve is further detached by using a simpler and more stable force application mode.
In the method provided by the embodiment of the application, since the device comprises the locking unit 1, the sleeve unit 2 and the drawing unit 3 which are sequentially connected, the shrinkage sleeve 11 and the clamp 12 in the locking unit 1 are used for being sleeved and contracted on the shaft sleeve in the process of installing the device, so that the device is fixed on the shaft sleeve, the sleeve unit 2 is used for being sleeved on the shaft sleeve and heating the shaft sleeve, the shaft sleeve is easier to detach after being heated and expanded, the heavy hammer 33 in the drawing unit 3 is sleeved on the pull rod 32 and is stopped by the stop piece 34, after the device is installed, the heavy hammer 33 is quickly moved, the inertia of the heavy hammer 33 is utilized to enable the heavy hammer 33 to strike the stop piece 34, so that the whole device is driven to move outwards, the shaft sleeve is driven to move outwards, the device can not damage the shaft sleeve and the main shaft in the process of detaching the shaft sleeve, the labor intensity of staff is also reduced, the maintenance efficiency of equipment is improved, and normal operation and safe production of the equipment are ensured.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the present application.
Claims (7)
1. A centrifugal pump shaft sleeve removal device, the device comprising: a locking unit (1), a sleeve unit (2) and a drawing unit (3);
the locking unit (1), the sleeve unit (2) and the drawing unit (3) are sequentially connected;
the locking unit (1) comprises a shrinkage sleeve (11) and a clamp (12), wherein the shrinkage sleeve (11) is cylindrical and is used for being sleeved on a shaft sleeve, an axial through groove (111) is formed in the wall of the shrinkage sleeve (11), the clamp (12) is used for being sleeved on the shrinkage sleeve (11), so that the shrinkage sleeve (11) is shrunk on the shaft sleeve, the clamp (12) is a spring clamp made of manganese steel, the shrinkage sleeve (11) is made of a thick-wall steel pipe with a smooth curved inner wall, the smooth curved surface is matched with the shape of the shaft sleeve, and the shrinkage sleeve (11) is obtained by processing through a heat treatment process after being molded;
the sleeve unit (2) comprises a heating sleeve (21) which is sleeved on the shaft sleeve and used for heating the shaft sleeve;
the drawing unit (3) comprises an end cover (31), a pull rod (32), a heavy hammer (33) and a stop piece (34), wherein the end cover (31), the pull rod (32) and the stop piece (34) are sequentially connected, the diameters of the end cover (31) and the stop piece (34) are larger than the diameter of the pull rod (32), and the heavy hammer (33) is sleeved on the pull rod (32);
the tie rod (32) comprises: a jackscrew (321) and a movable rod (322);
the jackscrew (321) is connected with the end cover (31), and the threaded head part of one end of the jackscrew, facing the end cover (31), is provided with a taper and is used for being matched with a central hole at the front end of the pump shaft for positioning;
the jackscrew (321) is connected with the movable rod (322) through a pin (323), and the movable rod can rotate in a certain angle;
the sleeve unit (2) further comprises a cylinder (22);
the cylinder body (22) is sleeved on the outer wall of the heating sleeve (21), and two ends of the cylinder body (22) are respectively connected with the locking unit (1) and the drawing unit (3);
at least two locking holes (222) are formed in one end, close to the locking unit (1), of the side wall of the cylinder body (22);
each of the locking holes (222) has a locking plate (223).
2. Device according to claim 1, characterized in that the outer wall of the shrink sleeve (11) tapers in size from the first end to the second end.
3. The device according to claim 2, characterized in that the second end of the shrink sleeve (11) is further provided with a connecting portion (112), the connecting portion (112) being provided with external threads;
the locking unit (1) further comprises an adjusting nut (13), and an internal thread matched with the external thread is arranged in the adjusting nut (13);
the adjusting nut (13) is fixed on the connecting part (112) in a threaded mode and is used for clamping the clamp (12).
4. Device according to claim 1, characterized in that the heating jacket (21) is surrounded on its inner wall by a resistance wire.
5. The device according to claim 1, characterized in that the lateral wall of the cylinder (22) is provided with at least two viewing holes (221).
6. The device according to claim 1, characterized in that the lateral wall of the cylinder (22) is also provided with a number of holes (224) equal to the number of locking plates (223) for housing the locking plates (223).
7. A method for disassembling a shaft sleeve of a centrifugal pump, which is applied to a device for disassembling a shaft sleeve of a centrifugal pump according to any one of claims 1 to 6, and comprises:
sleeving a shrinkage sleeve (11) in the locking unit (1) on the shaft sleeve;
sleeving a clamp (12) on the shrinkage sleeve (11), so that the shrinkage sleeve (11) is shrunk on the shaft sleeve;
and moving the heavy hammer (33) towards the dismounting direction of the shaft sleeve, so that the heavy hammer (33) impacts the stop piece (34), and the shaft sleeve is pulled outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228766.7A CN114434088B (en) | 2020-11-06 | 2020-11-06 | Device and method for disassembling shaft sleeve of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228766.7A CN114434088B (en) | 2020-11-06 | 2020-11-06 | Device and method for disassembling shaft sleeve of centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114434088A CN114434088A (en) | 2022-05-06 |
| CN114434088B true CN114434088B (en) | 2023-09-26 |
Family
ID=81361594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011228766.7A Active CN114434088B (en) | 2020-11-06 | 2020-11-06 | Device and method for disassembling shaft sleeve of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114434088B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202180324U (en) * | 2010-08-30 | 2012-04-04 | 中冶天工上海十三冶建设有限公司 | Device for dismounting bearing by resistance wire heating |
| GB2498941A (en) * | 2012-01-31 | 2013-08-07 | Shou King Entpr Co Ltd | Bearing puller |
| CN203542525U (en) * | 2013-11-26 | 2014-04-16 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Blind hole multifunctional bearing tensioning device |
| CN205393689U (en) * | 2016-02-27 | 2016-07-27 | 西安贝吉姆机床股份有限公司 | From centering spring clamping device |
| CN205734702U (en) * | 2016-05-18 | 2016-11-30 | 河南中烟工业有限责任公司 | Bearing extractor |
| CN210132454U (en) * | 2019-04-19 | 2020-03-10 | 中国石油天然气股份有限公司 | Device for disassembling shaft sleeve of centrifugal pump |
| CN210588943U (en) * | 2019-09-25 | 2020-05-22 | 安徽信息工程学院 | Linear cutting collet chuck clamp with positioning function |
| CN111702712A (en) * | 2020-07-08 | 2020-09-25 | 北京通嘉鼎元科技有限公司 | Drawing ring, preparation method thereof and shaft sleeve disassembling tool applied to vacuum pump |
| CN211681855U (en) * | 2020-02-28 | 2020-10-16 | 广西玉柴机器股份有限公司 | Bridge type simple puller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110214269A1 (en) * | 2010-03-05 | 2011-09-08 | Min-Chi Yu | Bearing puller |
-
2020
- 2020-11-06 CN CN202011228766.7A patent/CN114434088B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202180324U (en) * | 2010-08-30 | 2012-04-04 | 中冶天工上海十三冶建设有限公司 | Device for dismounting bearing by resistance wire heating |
| GB2498941A (en) * | 2012-01-31 | 2013-08-07 | Shou King Entpr Co Ltd | Bearing puller |
| CN203542525U (en) * | 2013-11-26 | 2014-04-16 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Blind hole multifunctional bearing tensioning device |
| CN205393689U (en) * | 2016-02-27 | 2016-07-27 | 西安贝吉姆机床股份有限公司 | From centering spring clamping device |
| CN205734702U (en) * | 2016-05-18 | 2016-11-30 | 河南中烟工业有限责任公司 | Bearing extractor |
| CN210132454U (en) * | 2019-04-19 | 2020-03-10 | 中国石油天然气股份有限公司 | Device for disassembling shaft sleeve of centrifugal pump |
| CN210588943U (en) * | 2019-09-25 | 2020-05-22 | 安徽信息工程学院 | Linear cutting collet chuck clamp with positioning function |
| CN211681855U (en) * | 2020-02-28 | 2020-10-16 | 广西玉柴机器股份有限公司 | Bridge type simple puller |
| CN111702712A (en) * | 2020-07-08 | 2020-09-25 | 北京通嘉鼎元科技有限公司 | Drawing ring, preparation method thereof and shaft sleeve disassembling tool applied to vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114434088A (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114434088B (en) | Device and method for disassembling shaft sleeve of centrifugal pump | |
| CN213999312U (en) | Frock is dismantled to ventilation blower impeller | |
| CN212683768U (en) | Special tool for dismounting and mounting rotating wheel bolt of water turbine | |
| CN214723829U (en) | Gun dismantling reamer device | |
| CN202498507U (en) | Device for assembling and disassembling air valve of junk head of engine | |
| CN211729020U (en) | Tool for disassembling bearing | |
| CN213673919U (en) | Positioning pin dismounting device | |
| CN212044471U (en) | High-efficient frock that decomposes of aircraft DC generator end shield | |
| CN213731535U (en) | Combined puller | |
| CN216098691U (en) | A extracting tool for dismantling centrifugal water pump mechanical seal fast | |
| CN211805877U (en) | Centrifugal pump shaft coupling extracting tool | |
| CN214274059U (en) | Centrifugal pump shaft sleeve taking-out tool | |
| CN218462036U (en) | Special tool for dismantling internal bolt | |
| JP3001665U (en) | Coupling bolt extraction jig | |
| CN217453766U (en) | Embedded bearing extracting tool | |
| CN211805896U (en) | Dismounting device for bearing of small motor | |
| CN219337603U (en) | Motor bearing dismounting clamp and device | |
| CN212969373U (en) | Rotor bearing dismantles frock | |
| CN216229159U (en) | Auxiliary tool for dismounting steering ball pin and steering plumbing arm | |
| CN217255994U (en) | Tool for removing oil cover in motor | |
| CN215293312U (en) | Novel split type taper key sleeve belt pulley | |
| CN210361131U (en) | Large-scale motor sliding ring detacher | |
| CN219562941U (en) | Bearing dismounting sleeve | |
| CN220463736U (en) | Quick dismounting device for sealing ring | |
| CN214980749U (en) | Disassembling tool for vibration groove equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |