CN109826849A - A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft - Google Patents
A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft Download PDFInfo
- Publication number
- CN109826849A CN109826849A CN201910106527.5A CN201910106527A CN109826849A CN 109826849 A CN109826849 A CN 109826849A CN 201910106527 A CN201910106527 A CN 201910106527A CN 109826849 A CN109826849 A CN 109826849A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- screw rod
- connection
- ultra
- type compressor
- 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.)
- Pending
Links
Landscapes
- Compressor (AREA)
Abstract
The invention discloses a kind of prefastening bolt connection assemblies suitable for the connection of ultra-large type compressor main shaft, it include: bolt mechanism, it includes screw rod, the bushing for being sleeved on the screw rod middle position and the nut being detachably connected with the screw rod both ends, the bushing is sleeved on the screw rod in the truncated cone-shaped coaxial with the center line of the screw rod, and the radius of an end face of the bushing is not more than the radius of main shaft connecting hole, the radius of another end face of the bushing is greater than the radius of the main shaft connecting hole；Mechanism for assembling-disassembling is detachably connected with one end of the screw rod, and the mechanism for assembling-disassembling completes dismounting of the bolt in the main shaft connecting hole for moving axially the screw rod in the main shaft connecting hole.The present invention realizes the cooperation of the zero clearance between the side of bushing and main shaft connecting hole, and then eliminates the natural bow of ultra-large type compressor main shaft, to improve the reliability that ultra-large type compressor is continuously run.
Description
Technical field
The invention belongs to compressor main shaft interconnection technique fields, and in particular to one kind is suitable for ultra-large type compressor main shaft and connects
The prefastening bolt connection assembly connect.
Background technique
With the enlargement of derived energy chemical industry size, the ultra-large type turbocompressor size for process industry is also continuous
It does big, wherein the main shaft of 100,000 grade space division compressors of domestic typical case is up to 8 meters, and the diameter of main shaft is up to 1.3 meters, in order to subtract
Its main shaft is usually carried out segmental machining by manufacture difficulty, the hauled weight of small this kind of compressor, then by each master after segmental machining
Shaft part completes conjunction by bolt the installation of main shaft.Wherein, hollow structure is used in the biggish interlude of major axis diameter, in this way
Not only it can guarantee the rigidity of main shaft, but also the weight of main shaft can be reduced.
And the axial tension that conjunction bolt will be born the generation of compressor drum natural bow of main shaft, it is wanted in compressor operation
The pneumatic axial force that high pressure gas generates is born, therefore, which transports the reliability of conjunction bolt for compressor long-term safety
Turn have the function of key.And conventional bolt connection is used, there are gaps between bolt and connecting hole, even if using articulation
Still there is small gap to assemble smoothly in hole bolt, as long as gap exists, will increase the natural bow of rotor, in machine
Biggish natural bow will lead to rotor and stator scraping collision during device starting or raising speed, cause serious mechanical failure.
Summary of the invention
Place in view of the deficiency of the prior art, the present invention provides one kind to be suitable for ultra-large type compressor main shaft
The prefastening bolt connection assembly of connection.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft, comprising:
Bolt mechanism comprising screw rod, be sleeved on the screw rod middle position bushing and can with the screw rod both ends
The nut of dismantling connection, the bushing are sleeved on the screw rod in the truncated cone-shaped coaxial with the center line of the screw rod, and institute
The radius for stating an end face of bushing is not more than the radius of main shaft connecting hole, and the radius of another end face of the bushing is greater than institute
State the radius of main shaft connecting hole；
Mechanism for assembling-disassembling is detachably connected with one end of the screw rod, and the mechanism for assembling-disassembling is for making the screw rod in institute
Axial movement in main shaft connecting hole is stated, dismounting of the bolt in the main shaft connecting hole is completed.
Further, the middle position of the screw rod is provided with rotary table protrusion of the length not less than the liner sleeve length, and
The taper of the rotary table protrusion is 1:18-22.
Further, the both ends of the rotary table protrusion are respectively arranged with a high pressure oil hole, and the side of the rotary table protrusion is set
It is equipped with helical oil groove.
Further, the first O-ring is provided between the high pressure oil hole and the bushing.
Further, the mechanism for assembling-disassembling include high-pressure oil pump and both ends respectively with the high-pressure oil pump and the spiral shell
The screw rod installation unit that bar is detachably connected, the screw rod installation unit include first that one end is detachably connected with the screw rod
Connecting rod and the positioning sleeve being successively sleeved on the outside of the first connecting rod, the first cylinder body and first piston, wherein described
One end phase after one end of positioning sleeve is in the gap extending between the main shaft connecting hole and the screw rod, with the bushing
Contact.
Further, the second O-ring is provided on the contact surface of first cylinder body and the first piston.
Further, the mechanism for assembling-disassembling further includes that both ends can be connected respectively with the screw rod and the high-pressure oil pump
Connector.
Further, the mechanism for assembling-disassembling further includes nut dismounting unit, and the nut dismounting unit includes one end and institute
State the second connecting rod that nut is detachably connected and the support sleeve, the second cylinder that are successively sleeved on the outside of second connecting rod
Body and second piston, the support sleeve are detachably connected far from one end of second cylinder body by connector sleeve and the nut.
Further, third O-ring is provided on second cylinder body and the contact surface of the second piston.
Further, the bushing is prepared by elastic material.
A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft provided by the invention, passes through lining
It is sleeved on screw rod in the truncated cone-shaped coaxial with the center line of screw rod, and the radius of an end face of bushing connects no more than main shaft
The radius in hole is connect, the radius of another end face of bushing is greater than the radius of main shaft connecting hole, and bushing is made to be installed to main shaft connection
Kong Hou is interference fitted with main shaft connecting hole, is realized the zero clearance cooperation between the side of bushing and main shaft connecting hole, is made
Two main shaft sections connected eliminate the natural bow of ultra-large type compressor main shaft without relative displacement, to improve super large
The reliability that type compressor is continuously run.
Detailed description of the invention
Fig. 1 is a kind of prefastening bolt suitable for the connection of ultra-large type compressor main shaft of exemplary embodiment of the present 1
The structural schematic diagram of connection component；
Fig. 2 is that the another kind of exemplary embodiment of the present 2 is suitable for the prefastening spiral shell of ultra-large type compressor main shaft connection
Tether the structural schematic diagram of connected components；
Fig. 3 is another prefastening spiral shell connected suitable for ultra-large type compressor main shaft of exemplary embodiment of the present 3
Tether the structural schematic diagram of connected components.
In figure: 1- screw rod, 2- bushing, 3- nut, 4- main shaft connecting hole, the first O-ring of 5-, 6- high-pressure oil pump, 7- first
Connecting rod, 8- positioning sleeve, the first cylinder body of 9-, 10- first piston, the second O-ring of 11-, 12- connector, the second connecting rod of 13-,
14- support sleeve, the second cylinder body of 15-, 16- second piston, 17- connector sleeve, 18- third O-ring；
101- rotary table protrusion, 102- helical oil groove.
Specific embodiment
In order to overcome the shortcomings in the prior art, the present invention provides a kind of preload suitable for the connection of ultra-large type compressor main shaft
Formula bolt connection assembly.To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with of the invention preferred
Attached drawing in embodiment, technical solution in the embodiment of the present invention are further described in more detail.In the accompanying drawings, from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Described embodiment
It is a part of the embodiment of the present invention, instead of all the embodiments.Embodiment below with reference to attached drawing description is exemplary
, it is intended to it is used to explain the present invention, and is not considered as limiting the invention.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to protection of the present invention
Range.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft, including bolt
Mechanism and mechanism for assembling-disassembling；Bolt mechanism includes screw rod 1, the bushing 2 for being sleeved on 1 middle position of screw rod and can with 1 both ends of screw rod
The nut 3 of dismantling connection, bushing 2 are sleeved on screw rod 1 in the truncated cone-shaped coaxial with the center line of screw rod 1, and one of bushing 2
The radius of end face is not more than the radius of main shaft connecting hole 4, and the radius of another end face of bushing 2 is greater than the half of main shaft connecting hole 4
Diameter；One end of mechanism for assembling-disassembling and screw rod 1 is detachably connected, and mechanism for assembling-disassembling is for moving screw rod 1 axially in main shaft connecting hole 4
It is dynamic, complete dismounting of the bolt in main shaft connecting hole 4.
The present embodiment is sleeved on screw rod 1 by bushing 2 in the truncated cone-shaped coaxial with the center line of screw rod 1, and bushing 2
The radius of one end face is not more than the radius of main shaft connecting hole 4, and the radius of another end face of bushing 2 is greater than main shaft connecting hole 4
Radius, make bushing 2 after being installed to main shaft connecting hole 4, be interference fitted with main shaft connecting hole 4, realize the side of bushing 2
Zero clearance cooperation between face and main shaft connecting hole 4, makes two main shaft sections connected without relative displacement, and then eliminate ultra-large type
The natural bow of compressor main shaft, to improve the reliability that ultra-large type compressor is continuously run.
As a preferred embodiment, the middle position of screw rod 1 is provided with rotary table protrusion of the length not less than 2 length of bushing
101, and the taper of rotary table protrusion 101 is 1:18-22.
Further, the both ends of rotary table protrusion 101 are respectively arranged with a high pressure oil hole, the side setting of rotary table protrusion 101
There is helical oil groove 102.
Wherein, the first O-ring 5 is provided between high pressure oil hole and bushing 2, the first O-ring 5 is close for high pressure oil
Envelope, can prevent the leakage of high pressure oil when bolt connection assembly is assembled.
As a preferred embodiment, mechanism for assembling-disassembling include high-pressure oil pump 6 and both ends respectively with high-pressure oil pump 6 and spiral shell
The screw rod installation unit that bar 1 is detachably connected, screw rod installation unit include one end and the first connecting rod that screw rod 1 is detachably connected
7 and it is successively sleeved on positioning sleeve 8, the first cylinder body 9 and the first piston 10 in the outside of first connecting rod 7, the first cylinder body 9 and the
One piston 10 forms closed first oil cylinder, wherein one end of positioning sleeve 8 is being extend between main shaft connecting hole 4 and screw rod 1
After in gap, it is in contact with one end of bushing 2.Wherein, the sum of length of positioning sleeve 8 and rotary table protrusion 101 is greater than to be connected
The length of the main shaft connecting hole 4 of one main shaft section.Since the first cylinder body 9 is with positioning sleeve 8 without relative displacement, first piston 10 and spiral shell
Bar 1 is without relative displacement, so when the first cylinder body 9 generates relative displacement with first piston 10, by positioning sleeve 8 make screw rod 1 with
Main shaft connecting hole 4 generates relative displacement, reaches screw rod 1 and main shaft connecting rod 4 with truncated cone-shaped bushing 2 and assembles purpose；Wherein,
The positioning sleeve 8 that can be extend into the gap between main shaft connecting hole 4 and screw rod 2 by one end overcomes rotary table protrusion 101 and master
There are the disadvantages of fit-up gap misaligned between axis connection hole 4, and real by 1 installation unit of screw rod with high-pressure oil pump 6
The accurate installation of definite value pretightning force is showed.
Further, the second O-ring 11 is provided on the contact surface of the first cylinder body 9 and first piston 10.
Closed first oil cylinder is formed with first piston 10 by the first cylinder body 9, allows first connecting rod 7 in axial generation
Relative displacement, and then screw rod 1 is driven to carry out axial displacement in main shaft connecting hole 4, wherein in the first cylinder body 9 and first piston
Second O-ring 11 of 10 settings, can prevent the first in-oil cylinder oil liquid leakage.
As a preferred embodiment, bushing 2 is prepared by elastic material.
The application method of the bolt connection assembly of the present embodiment is as follows:
(1) bushing 2 is sleeved in the rotary table protrusion 101 of screw rod 1；
(2) first connecting rod 7 is connected with one end of screw rod 1；
(3) positioning sleeve 8, the first cylinder body 9 and first piston 10 are successively set on first connecting rod 7, and by high-pressure oil pump 6
It is connected with first piston 10；
(4) oil pressure is filled with into bolt connection assembly by high-pressure oil pump 6, tensioner truncated cone-shaped bushing 2 makes the column of bushing 2
Gapless between face and connected main shaft connecting hole 4；
(5) screw rod installation unit is removed, truncated cone-shaped bushing 2 and 4 gapless of main shaft connecting hole after confirming tensioner, then in spiral shell
Nut 3 is tightened at the both ends of bar 1, completes the assembly to two main shaft sections.
Embodiment 2
Referring to embodiment 1, the different place of prefastening bolt connection assembly provided in this embodiment is, such as Fig. 2 institute
Show, mechanism for assembling-disassembling further includes the connector 12 that both ends can be connected respectively with screw rod 1 and high-pressure oil pump 6.
The application method of the bolt connection assembly of the present embodiment is as follows:
(1) one end of connector 12 is connected with the one end for the screw rod 1 being assembled in main shaft connecting hole 4, then will connection
First 12 other end is connected with high-pressure oil pump 6；
(2) oil pressure is filled with into bolt connection assembly by high-pressure oil pump 6, stretches screw rod 1, operating pressure need to be greater than installation
When oil pressure；
(3) nut 3 is screwed off, after discharging oil pressure, then removes connector 12, completes the tearing open in main shaft connecting hole 4 of screw rod 1
It unloads.
Embodiment 3
Referring to embodiment 2, the different place of prefastening bolt connection assembly provided in this embodiment is, such as Fig. 3 institute
Show, mechanism for assembling-disassembling further includes nut dismounting unit, and it includes that one end is connect with second that nut 3 is detachably connected that nut, which dismounts unit,
Bar 13 and support sleeve 14, the second cylinder body 15 and the second piston 16 for being successively sleeved on 13 outside of the second connecting rod, support sleeve 14
One end far from the second cylinder body 15 is detachably connected by connector sleeve 17 with nut 3.
As a preferred embodiment, third O-ring 18 is provided on the contact surface of the second cylinder body 15 and second piston 16.
The application method of the bolt connection assembly of the present embodiment is as follows:
(1) the second connecting rod 13 is connected with nut 3 by connector sleeve 17；
(2) support sleeve 14, the second cylinder body 15 and second piston 16 are successively set in the second connecting rod 13, and by high pressure oil
Pump 6 is connected with second piston 16；
(3) oil pressure is filled with into bolt connection assembly by high-pressure oil pump 6, stretches nut 3, connect nut 3 in main shaft
Axial movement in hole 4；
(4) it screws on fire and screws off nut 3, after discharging oil pressure, then remove the second connecting rod 13, complete nut 3 on screw rod 1
Dismounting.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft characterized by comprising
Bolt mechanism comprising screw rod is sleeved on the bushing in the screw rod middle position and detachable with the screw rod both ends
The nut of connection, the bushing are sleeved on the screw rod in the truncated cone-shaped coaxial with the center line of the screw rod, and the lining
The radius of one end face of set is not more than the radius of main shaft connecting hole, and the radius of another end face of the bushing is greater than the master
The radius in axis connection hole；
Mechanism for assembling-disassembling is detachably connected with one end of the screw rod, and the mechanism for assembling-disassembling is for making the screw rod in the master
It is moved axially in axis connection hole, completes dismounting of the bolt in the main shaft connecting hole.
2. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 1,
It is characterized in that, the middle position of the screw rod is provided with rotary table protrusion of the length not less than the liner sleeve length, and the rotary table
The taper of protrusion is 1:18-22.
3. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 2,
It is characterized in that, the both ends of the rotary table protrusion are respectively arranged with a high pressure oil hole, and the side of the rotary table protrusion is provided with spiral
Shape oil groove.
4. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 3,
It is characterized in that, the first O-ring is provided between the high pressure oil hole and the bushing.
5. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 1,
It is characterized in that, the mechanism for assembling-disassembling includes that high-pressure oil pump and both ends are detachable with the high-pressure oil pump and the screw rod respectively
The screw rod installation unit of connection, the screw rod installation unit includes one end and the screw rod is detachably connected first connecting rod,
And successively it is sleeved on positioning sleeve, the first cylinder body and first piston on the outside of the first connecting rod, wherein the positioning sleeve
After one end is in the gap extending between the main shaft connecting hole and the screw rod, it is in contact with one end of the bushing.
6. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 5,
It is characterized in that, is provided with the second O-ring on the contact surface of first cylinder body and the first piston.
7. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 5,
It is characterized in that, the mechanism for assembling-disassembling further includes the connector that both ends can be connected respectively with the screw rod and the high-pressure oil pump.
8. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 5,
It is characterized in that, the mechanism for assembling-disassembling further includes nut dismounting unit, and the nut dismounting unit includes one end and the nut can
Second connecting rod of dismantling connection and the support sleeve being successively sleeved on the outside of second connecting rod, the second cylinder body and second
Piston, the support sleeve are detachably connected far from one end of second cylinder body by connector sleeve and the nut.
9. a kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft according to claim 8,
It is characterized in that, is provided with third O-ring on the contact surface of second cylinder body and the second piston.
10. according to claim 1 to a kind of any one of 9 prefastening bolt companies suitable for the connection of ultra-large type compressor main shaft
Connected components, which is characterized in that the bushing is prepared by elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106527.5A CN109826849A (en) | 2019-02-02 | 2019-02-02 | A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106527.5A CN109826849A (en) | 2019-02-02 | 2019-02-02 | A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826849A true CN109826849A (en) | 2019-05-31 |
Family
ID=66863390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106527.5A Pending CN109826849A (en) | 2019-02-02 | 2019-02-02 | A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109826849A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013006890A1 (en) * | 2013-04-20 | 2014-03-27 | Daimler Ag | Method for manufacturing crankshaft for internal combustion engine, involves forming profiles in connection regions before assembling crankshaft parts on contact surfaces, where profiles are formed over outer surface part of regions |
| CN104816143A (en) * | 2015-03-31 | 2015-08-05 | 上海中船三井造船柴油机有限公司 | Dismounting and mounting method and device of segmented crankshaft of marine low speed diesel engine |
| CN107962365A (en) * | 2017-10-31 | 2018-04-27 | 沈阳透平机械股份有限公司 | The rotor assembling method of super-big and overweight with three-stage main shaft |
-
2019
- 2019-02-02 CN CN201910106527.5A patent/CN109826849A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013006890A1 (en) * | 2013-04-20 | 2014-03-27 | Daimler Ag | Method for manufacturing crankshaft for internal combustion engine, involves forming profiles in connection regions before assembling crankshaft parts on contact surfaces, where profiles are formed over outer surface part of regions |
| CN104816143A (en) * | 2015-03-31 | 2015-08-05 | 上海中船三井造船柴油机有限公司 | Dismounting and mounting method and device of segmented crankshaft of marine low speed diesel engine |
| CN107962365A (en) * | 2017-10-31 | 2018-04-27 | 沈阳透平机械股份有限公司 | The rotor assembling method of super-big and overweight with three-stage main shaft |
Non-Patent Citations (2)
| Title |
|---|
| 《化工厂机械手册》编辑委员会: "《化工厂机械手册》", 30 November 1989, 化学工业出版社 * |
| 陆金铭: "《船舶动力装置安装工艺》", 31 August 2017, 东南大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201309777Y (en) | Novel expansion shaft | |
| CN103557200A (en) | Hydraulic cylinder with rotation resistant mechanism | |
| CN109760858B (en) | Two-degree-of-freedom decoupling space adhering claw transmission device | |
| CN108462310A (en) | Remaining electromechanical actuator | |
| CN109826849A (en) | A kind of prefastening bolt connection assembly suitable for the connection of ultra-large type compressor main shaft | |
| JP2007303412A (en) | Uniaxial eccentric screw-pump | |
| CN202228467U (en) | Piston cylinder | |
| CN101767380A (en) | Combined type double screw swell drier | |
| CN205559409U (en) | Spirally swinging hydraulic cylinder | |
| CN209604243U (en) | A kind of Quimby pump double mechanical seal | |
| CN210087717U (en) | Telescopic rotary hydraulic cylinder | |
| CN218440012U (en) | Telescopic rotary hydraulic cylinder | |
| CN208364625U (en) | Shaft coupling | |
| CN201650738U (en) | Rotor structure of twin-screw compressor | |
| ITMI20112392A1 (en) | EQUIPMENT AND METHODS FOR IMPLEMENTING VALVES | |
| CN108591122A (en) | A kind of protecgulum regulating device of blowdown self priming pump | |
| CN105546102A (en) | Oil seal structure for speed reducing mechanism | |
| CN211315473U (en) | Internal and external pressure balance type corrugated compensator | |
| CN204371574U (en) | A kind of high speed axial piston pump | |
| CN208503294U (en) | A kind of high-accuracy shaft coupling | |
| CN109909731A (en) | A kind of prefastening assembly method suitable for ultra-large type compressor main shaft | |
| CN207513728U (en) | A kind of wicket gate seal device of tubular turbine | |
| CN216803170U (en) | Centering device | |
| CN2610167Y (en) | Hydraulic central rotation connection sleeve | |
| CN219833935U (en) | Joint motor actuator structure with double encoders |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190531 |