CN212454737U - Vertical motion mechanism for reciprocating labyrinth type piston compressor - Google Patents
Vertical motion mechanism for reciprocating labyrinth type piston compressor Download PDFInfo
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- CN212454737U CN212454737U CN202020624461.7U CN202020624461U CN212454737U CN 212454737 U CN212454737 U CN 212454737U CN 202020624461 U CN202020624461 U CN 202020624461U CN 212454737 U CN212454737 U CN 212454737U
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- connecting rod
- crosshead
- oil
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- crankshaft
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Abstract
A vertical moving mechanism for reciprocating labyrinth type piston compressor is composed of machine base, crankshaft, connecting rod, cross head, oil scraper for guide bearing and oil pump. The engine base is formed by a crank case and an engine body which are vertically combined at the center line of a crank shaft, the crank shaft is supported on a bearing of the engine base, the crank shaft is connected with a driving machine through a rigid coupling, and the driving machine drives the crank shaft to rotate; the moving mechanism is in high-precision trapezoidal thread connection with a crosshead and a piston rod, a crosshead guide rail is precisely guided to a bearing oil wiper, the matching clearance between a labyrinth piston and a cylinder is guaranteed by machining precision, and the clearance precision is improved while the installation difficulty and the installation period are greatly reduced; the safety of the equipment is improved, and meanwhile, the installation difficulty is reduced; the crosshead and the connecting rod are made of high-strength materials, are designed in a light weight mode, are suitable for operation at medium and high rotating speeds, and enable labyrinth compression to be more efficient.
Description
Technical Field
The utility model relates to a vertical motion for reciprocal labyrinth piston compressor belongs to reciprocating piston compressor technical field.
Background
The difficulty and the defect of the prior domestic labyrinth piston compressor are that the positioning precision of a piston rod and a crosshead is high, and the fit clearance of a labyrinth piston and a cylinder is small, so that the labyrinth compressor has high manufacturing and processing precision requirement, high installation and debugging difficulty, long installation period and high maintenance difficulty.
The utility model aims to overcome the defects in the prior labyrinth reciprocating compressor technology, and provides a novel reciprocating labyrinth piston compressor motion mechanism with a crosshead and a piston rod connected by high-precision trapezoidal threads, so as to improve the positioning precision and the connection reliability and reduce the difficulty of installation, use, maintenance and operation; the light weight design adapts to the trend of high-speed operation in the labyrinth compressor.
Disclosure of Invention
The utility model aims to provide a movement mechanism which has accurate positioning, convenient installation, safety and reliability and is suitable for middle and high rotating speed for a labyrinth oxygen compressor, and the purpose of the utility model is completed by the following technical proposal, a vertical movement mechanism for a reciprocating labyrinth piston compressor, which is arranged in a vertical four-row structure; the engine base is composed of a crankcase and a machine body which are vertically combined at the center line of the crankshaft, 4 bearings are arranged at the center line, and the bearings are installed on the engine base through hydraulic connection by aluminum magnesium alloy thin-wall bearing bushes; the crankshaft is supported on 4 bearings of the base and made of high-strength alloy steel forgings, and is connected with a driving machine through a rigid coupling, and the driving machine drives the crankshaft to rotate; the crosshead moves up and down in 4 crosshead guide rails of the base and is cast integrally by cast steel, and Babbitt metal is cast on the surface of the crosshead; the connecting rod is used for connecting the crankshaft and the crosshead to convert the rotating motion of the crankshaft into the up-and-down motion of the crosshead, and is made of a high-strength alloy steel forging; the guide bearing oil wiper is arranged on the base and has two functions of oil wiping and guiding of the piston rod; the oil pump is arranged at the non-driving end of the crankshaft, and the overrunning clutch drives the oil pump to provide pressure oil forced lubrication for the moving parts.
Preferably, the method comprises the following steps: the crosshead comprises a crosshead body, a crosshead pin, a lower nut and an upper nut, wherein the crosshead body is cast steel integrally, and the surface of the crosshead body is cast with Babbitt metal; the crosshead pin is made of a high-strength alloy steel forging; the lower nut and the upper nut are made of high-strength alloy steel forgings, and high-precision trapezoidal threads are formed in the lower nut and the upper nut; the piston rod is fixed on the crosshead after being fastened by the lower nut and the upper nut, and the aim of preventing the piston rod from loosening is achieved by controlling the pre-tightening force; the outer diameter of the piston rod is matched with the inner hole of the crosshead body in a positioning way to ensure that the piston rod is concentric with the crosshead guide rail.
Preferably, the method comprises the following steps: the connecting rod consists of a connecting rod cover, a connecting rod big-end tile, a connecting rod bolt, a connecting rod nut, a connecting rod body and a connecting rod small-end tile, wherein the connecting rod cover and the connecting rod body are made of high-strength alloy steel forgings; the connecting rod bolt is hydraulically connected with the connecting rod nut; the connecting rod big end bush is an aluminum-magnesium alloy thin-wall bush, and the connecting rod small end bush is a copper-based bearing alloy bush.
Preferably, the method comprises the following steps: the guide bearing oil wiper consists of an oil wiper body, a guide bearing sleeve, an oil retainer ring and an oil wiper ring, and water is introduced into the oil wiper body for cooling; the guide bearing sleeve is a copper-based bearing alloy bushing and plays a role in guiding the piston rod; the oil slinger is formed by combining an upper oil slinger group and a lower oil slinger group and is made of carbon fiber filled PTFE; the oil scraper ring is formed by combining an upper oil scraper ring and a lower oil scraper ring and is made of brass alloy.
The utility model belongs to the improvement to the prior art, the motion mechanism adopts the crosshead to be connected with the high-precision trapezoidal thread of the piston rod, the crosshead guide rail is accurately guided to the bearing oil scraper, the fit clearance of the labyrinth piston and the cylinder is ensured by the machining precision, the clearance precision is improved, and the installation difficulty and the installation period are greatly reduced; the trapezoidal thread has stronger bearing capacity, so that the safe operation of the compressor is ensured; the key parts are hydraulically connected and tightened by special hydraulic equipment. The safety of the equipment is improved, and meanwhile, the installation difficulty is reduced; the crosshead and the connecting rod are made of high-strength materials, and the design of light weight can improve the rotating speed of the compressor, so that the labyrinth compression has higher efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the crosshead of the present invention.
Fig. 3 is a schematic view of the connecting rod of the present invention.
Fig. 4 is a schematic view of the oil scraper for the guide bearing of the present invention.
Fig. 5 is a schematic diagram of the oil pump of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1-5 show an embodiment of the present invention, which is a vertical motion mechanism for a reciprocating labyrinth piston compressor, and is composed of at least a frame 1, a crankshaft 2, a connecting rod 3, a crosshead 4, a guide bearing oil scraper 5, and an oil pump 6, wherein the motion mechanism is arranged in a vertical four-row structure; the engine base 1 is formed by a crankcase 7 and an engine body 8 in the center line of the crankshaft 2 in an up-and-down involution way, 4 bearings 9 are arranged at the center line, and the bearings 9 are made of aluminum-magnesium alloy thin-wall bearing bushes and are installed on the engine base 1 through hydraulic connection; the crankshaft 2 is supported on 4 bearings 9 of the base 1 and made of high-strength alloy steel forgings, the crankshaft 2 is connected with a driving machine through a rigid coupling, and the driving machine drives the crankshaft 2 to rotate; the crosshead 4 moves up and down in 4 crosshead 4 guide rails of the base 1, and is cast integrally for cast steel, and the surface of the crosshead 4 is poured with Babbitt metal; the connecting rod 3 is used for connecting the crankshaft 2 and the crosshead 4, so that the rotating motion of the crankshaft 2 is converted into the up-and-down motion of the crosshead 4, and the connecting rod 3 is made of a high-strength alloy steel forging; the guide bearing oil wiper 5 is arranged on the base 1 and has two functions of oil wiping and guiding of a piston rod; the oil pump 6 is arranged at the non-driving end of the crankshaft 2, and drives an oil pump through an overrunning clutch to provide pressure oil forced lubrication for moving parts.
The crosshead 4 of the present invention is composed of a crosshead body 10, a crosshead pin 11, a lower nut 12, and an upper nut 13. The crosshead body 10 is integrally cast by cast steel, and the surface of the crosshead body is cast with Babbitt metal; the crosshead pin 11 is made of a high-strength alloy steel forging; the lower nut 12 and the upper nut 13 are made of high-strength alloy steel forgings and internally provided with high-precision trapezoidal threads; the piston rod 14 is fixed on the crosshead 4 after being fastened by the lower nut 12 and the upper nut 13, and the aim of preventing the piston rod 14 from loosening is achieved by controlling the pretightening force; the outer diameter of the piston rod 14 is matched with the inner hole of the crosshead body 10 in a positioning way, so that the piston rod 14 is concentric with the guide rail of the crosshead 4.
The connecting rod 3 of the utility model is composed of a connecting rod cover 15, a connecting rod big-head tile 16, a connecting rod bolt 17, a connecting rod nut 18, a connecting rod body 19 and a connecting rod small-head tile 20. The connecting rod cover 15 and the connecting rod body 19 are made of high-strength alloy steel forgings; the connecting rod bolt 17 is hydraulically connected with the connecting rod nut 18; the connecting rod big end tile 16 is an aluminum-magnesium alloy thin-wall bush, and the connecting rod small end tile 20 is a copper-based bearing alloy bush.
The guide bearing oil scraper 5 of the present invention is composed of an oil scraper body 21, a guide bearing sleeve 22, an oil scraper ring 23, and an oil scraper ring 24. Water is introduced into the oil scraper body 21 for cooling; the guide bearing sleeve 22 is a copper-based bearing alloy bushing and plays a role in guiding the piston rod 14; the oil slinger 23 is formed by combining an upper oil slinger and a lower oil slinger and is made of carbon fiber filled PTFE; the oil scraper ring 24 is composed of an upper and a lower sets of oil scraper rings and is made of brass alloy.
The movement mechanism is arranged in a vertical four-row structure, the maximum allowable gas force is 14kN, and the stroke is 250 mm.
The oil pump is arranged at the non-driving end of the crankshaft, and the overrunning clutch drives the oil pump to provide pressure oil forced lubrication for the moving parts.
Claims (4)
1. A vertical motion mechanism for a reciprocating labyrinth piston compressor is arranged in a vertical four-row structure; the oil pump is characterized in that the engine base (1) is formed by vertically combining a crank case (7) and a machine body (8) at the center line of the crank shaft, 4 bearings (9) are arranged at the center line, and the bearings (9) are installed on the engine base (1) through hydraulic connection by using aluminum magnesium alloy thin-wall bearing bushes; the crankshaft (2) is supported on 4 bearings (9) of the base (1) and made of high-strength alloy steel forgings, and is connected with a driving machine through a rigid coupling, and the driving machine drives the crankshaft to rotate; the crosshead (4) moves up and down in 4 crosshead guide rails of the base (1) and is cast integrally by cast steel, and the surface of the crosshead is cast with Babbitt metal; the connecting rod (3) is used for connecting the crankshaft (2) and the crosshead (4) to convert the rotary motion of the crankshaft (2) into the up-and-down motion of the crosshead, and is made of a high-strength alloy steel forging; the guide bearing oil wiper (5) is arranged on the base (1) and has two functions of oil wiping and guiding of a piston rod; the on-board oil pump (6) is arranged at the non-driving end of the crankshaft (2), and drives the oil pump through the overrunning clutch to provide pressure oil for the moving part to perform forced lubrication.
2. The vertical motion mechanism for a reciprocating labyrinth type piston compressor as recited in claim 1, wherein the cross head (4) is composed of a cross head body (10), a cross head pin (11), a lower nut (12), and an upper nut (13), the cross head body (10) is integrally cast of cast steel, and the surface is cast with babbitt metal; the crosshead pin (11) is made of a high-strength alloy steel forging; the lower nut (12) and the upper nut (13) are made of high-strength alloy steel forgings, and high-precision trapezoidal threads are formed in the lower nut and the upper nut; the piston rod (14) is fixed on the crosshead (4) after being fastened by the lower nut (12) and the upper nut (13), and the aim of preventing the piston rod from loosening is achieved by controlling the pretightening force; the outer diameter of the piston rod (14) is matched with the inner hole of the crosshead body (10) in a positioning way to ensure that the piston rod is concentric with the crosshead guide rail.
3. The vertical motion mechanism for a reciprocating labyrinth piston compressor as recited in claim 1, characterized in that the connecting rod (3) is composed of a connecting rod cap (15), a connecting rod big head shoe (16), a connecting rod bolt (17), a connecting rod nut (18), a connecting rod body (19), a connecting rod small head shoe (20), wherein the connecting rod cap (15) and the connecting rod body (19) are made of high-strength alloy steel forgings; the connecting rod bolt (17) is hydraulically connected with the connecting rod nut (18); the connecting rod big head bush (16) is an aluminum-magnesium alloy thin-wall bush, and the connecting rod small head bush (20) is a copper-based bearing alloy bush.
4. The vertical motion mechanism for reciprocating labyrinth piston compressor as claimed in claim 1, wherein the guide bearing oil wiper is composed of an oil wiper body (21), a guide bearing sleeve (22), an oil scraper ring (23), and an oil scraper ring (24), the oil wiper body (21) is cooled by water; the guide bearing sleeve (22) is a copper-based bearing alloy bushing and plays a role in guiding the piston rod; the oil slinger (23) is formed by combining an upper oil slinger group and a lower oil slinger group and is made of carbon fiber filled PTFE; the oil scraper ring (24) is formed by combining an upper oil scraper ring and a lower oil scraper ring and is made of brass alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020624461.7U CN212454737U (en) | 2020-04-23 | 2020-04-23 | Vertical motion mechanism for reciprocating labyrinth type piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020624461.7U CN212454737U (en) | 2020-04-23 | 2020-04-23 | Vertical motion mechanism for reciprocating labyrinth type piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212454737U true CN212454737U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020624461.7U Active CN212454737U (en) | 2020-04-23 | 2020-04-23 | Vertical motion mechanism for reciprocating labyrinth type piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212454737U (en) |
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2020
- 2020-04-23 CN CN202020624461.7U patent/CN212454737U/en active Active
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