CN212508697U - Marine oil-free low-vibration noise carbon dioxide compressor - Google Patents
Marine oil-free low-vibration noise carbon dioxide compressor Download PDFInfo
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- CN212508697U CN212508697U CN202021188904.9U CN202021188904U CN212508697U CN 212508697 U CN212508697 U CN 212508697U CN 202021188904 U CN202021188904 U CN 202021188904U CN 212508697 U CN212508697 U CN 212508697U
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Abstract
The utility model discloses a marine oil-free low-vibration noise carbon dioxide compressor, which comprises a crankcase, wherein a crankshaft is rotatably arranged in the crankcase; a cylinder is arranged on the crankcase, a lengthened cylinder is arranged on the cylinder, a piston is arranged in the cylinder in a sliding manner, a lengthened piston is arranged in the lengthened cylinder in a sliding manner, the lengthened piston is connected with the piston, and the piston is connected with the crankshaft through a connecting rod; an air valve assembly is arranged on the lengthened air cylinder, and an air cylinder cover is arranged on the air valve assembly; the air valve assembly comprises a valve plate arranged on the lengthened air cylinder, an air hole is formed in the valve plate, a valve block and a limiter are arranged on the valve plate, the valve block is located between the valve plate and the limiter and can cover the air hole, when air rushes open the valve block through the air hole, the valve block is attached to the lower portion of the limiter, and the lift range of the end portion of the valve block is 0.3-3 mm. The utility model has the advantages that: on the premise of ensuring the area of an airflow channel, the vibration and the noise generated by the air valve assembly are effectively reduced, and the oil-free compressor cannot generate the condition of lubricating oil emulsification.
Description
Technical Field
The utility model relates to a gas compressor field, concretely relates to marine no oil is hanged down and is shaken noise carbon dioxide compressor.
Background
At present stage, CO for ship2The compressor mostly adopts a reciprocating piston type structure and an engine oil lubricating mode, although the basic performance indexes such as gas flow, exhaust pressure and the like can meet the requirements; however, due to the special environment of the ship and the recent requirements for comprehensive performance such as vibration, noise, reliability, less maintenance and the like, the requirement is higher and higher. The existing compressor has the defects of large vibration, high noise, easy emulsification of lubricating oil and short maintenance period, and can not meet the use requirements of modern ships.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: the compressor in the prior art has the technical problems of large vibration and noise and hidden danger of lubricating oil emulsification.
The utility model discloses a realize solving above-mentioned technical problem through following technical means: a ship oil-free low-vibration noise carbon dioxide compressor comprises a crankcase, wherein a crankshaft is rotatably arranged in the crankcase;
the crank case is provided with a cylinder, the cylinder is provided with a lengthened cylinder, a piston is arranged in the cylinder in a sliding manner, a lengthened piston is arranged in the lengthened cylinder in a sliding manner, the lengthened piston is connected with the piston, and the piston is connected with the crankshaft through a connecting rod;
an air valve assembly is arranged on the lengthened air cylinder, and an air cylinder cover is arranged on the air valve assembly;
the air valve assembly comprises a valve plate arranged on the lengthened air cylinder, an air hole is formed in the valve plate, a valve block and a limiter are arranged on the valve plate, the valve block is located between the valve plate and the limiter and can cover the air hole, when air rushes open the valve block through the air hole, the valve block is attached to the lower portion of the limiter, and the lift range of the end portion of the valve block is 0.3-3 mm.
The utility model provides a marine oil-free low-vibration noise carbon dioxide compressor is when the actual application, the bent axle rotates under external drive equipment's drive, the bent axle drives the connecting rod motion, and then drive piston and extension piston reciprocating motion, when carbon dioxide gets into the compressor, the valve block that the correspondence of admitting air is opened, when the compressor compresses carbon dioxide, the valve block that the correspondence of admitting air is closed, when the carbon dioxide after being compressed is discharged, the valve block that the exhaust corresponds is opened, and then realize carbon dioxide's compression under air valve subassembly and cylinder head effect, under gaseous effect, the valve block can produce the swing, and then beat respectively on valve plate and stopper, set valve block tip lift range to 0.3-3mm, can be under the prerequisite of guaranteeing air valve passage area, effectively reduce the vibration and the noise that the air valve subassembly produced, simultaneously this compressor is oil-free compressor, and therefore, emulsification of the lubricating oil does not occur.
Preferably, a crankshaft bearing is installed at the first end of the crankcase, a bearing seat is installed at the second end of the crankcase, a crankshaft bearing is installed on the bearing seat, the two crankshaft bearings are coaxial, the crankshaft bearings are lubricated by grease, and a bearing sealing ring is arranged on the crankshaft bearings;
the crankshaft is arranged in two crankshaft bearings, the second end of the crankshaft extends out of the bearing seat, and an end cover is arranged outside the first end of the crankshaft.
The crankshaft bearing is lubricated by grease, the grease is injected into the crankshaft bearing at one time, the condition of emulsification of lubricating oil is avoided, and the sealing ring of the bearing can realize the sealing of the middle bearing.
Preferably, the crankshaft is provided with a balance weight.
The reciprocating compressor has reciprocating inertia force along with the rotation of the crankshaft, the reciprocating inertia force is externally expressed as machine vibration, and the arrangement of the balance weight can reduce unbalanced force to the maximum extent and ensure the minimum vibration of the compressor.
Optimally, an annular groove is formed in the outer portion of the piston, a first guide ring is sleeved in the annular groove and made of a self-lubricating material, and the sum of the clearance between the first guide ring and the piston and the clearance between the first guide ring and the inner wall of the cylinder is 0.05-0.075 mm.
The first guide ring is arranged to prevent dry friction caused by direct contact between the piston and the cylinder, and the dry friction only occurs between the first guide ring and the cylinder; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, due to the reason of heating expansion, gaps need to be reserved between the first guide ring and the piston and between the first guide ring and the inner wall of the air cylinder, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the scheme can accurately calculate, the sum of the gaps on the inner side and the outer side of the first guide ring is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
Preferably, the first end of the connecting rod is arranged on the crankshaft through a first connecting rod bearing;
a piston pin is arranged in the piston, the second end of the connecting rod is arranged on the piston pin through a second connecting rod bearing, the first connecting rod bearing and the second connecting rod bearing are lubricated by grease, and bearing sealing rings are arranged on the first connecting rod bearing and the second connecting rod bearing.
The first connecting rod bearing and the second connecting rod bearing are lubricated by grease, so that the condition of lubricating oil emulsification is avoided, and the sealing of the middle bearing can be realized by the bearing sealing ring.
Preferably, a blind hole is formed in the piston pin, lubricating grease is filled in the blind hole, and an opening of the blind hole is sealed through a plug;
and a hole which leads to the inside of the blind hole is formed in the side wall of the piston pin, and the hole leads to the inner wall of the second connecting rod bearing outwards so as to supplement lubricating grease for the second connecting rod bearing.
Optimized, a plurality of annular are seted up to the extension piston outside, and the second guide ring is established to the cover in the annular of below, and the piston ring is established to the cover in the annular of top, and second guide ring, piston ring all adopt self-lubricating material to make, and the size of clearance sum between second guide ring and the extension piston and between second guide ring and the extension cylinder inner wall is 0.05-0.075 mm.
The second guide ring and the piston ring are made of self-lubricating materials, so that self-lubrication is realized, no lubricating oil is required to be added in the running process of the compressor, and the hidden danger of lubricating oil emulsification is completely eradicated; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, gaps need to be reserved between the second guide ring and the lengthened piston and between the second guide ring and the inner wall of the lengthened cylinder, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the sum of the gaps between the inner side and the outer side of the second guide ring is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
Preferably, the valve block and the limiter are mounted on the valve plate through screws, the limiter is plate-shaped, and the end, close to the air hole, of the limiter tilts towards the direction far away from the valve plate.
Optimally, the distance between the tilting end part of the limiting stopper and the valve plate is 1 mm.
The pneumatic valve during operation can produce the noise, furthest reduces the lift of valve block, the valve block is hugged closely on the valve plate, prevent gaseous reverse circulation, can paste the stopper after the valve plate is opened on, because the operating condition of valve block is the swing back and forth, can pat respectively on valve plate and stopper, if the lift is too big can cause very big vibration and noise, this scheme is under the prerequisite of guaranteeing the air current channel area, set 1mm with the lift of valve block into, vibration and noise have effectively been reduced.
Preferably, a shock absorber is arranged on the compressor.
The proper vibration absorber is configured for the compressor, the performance parameter range of the vibration absorber is determined according to the overall mass of the compressor, the machine running frequency, the gravity center position and other parameters, and the vibration absorber with the matched model is finally selected, so that the transmission of the vibration of the compressor can be reduced.
The utility model has the advantages that:
1. the utility model provides a marine oil-free low-vibration noise carbon dioxide compressor is when the actual application, the bent axle rotates under external drive equipment's drive, the bent axle drives the connecting rod motion, and then drive piston and extension piston reciprocating motion, when carbon dioxide gets into the compressor, the valve block that the correspondence of admitting air is opened, when the compressor compresses carbon dioxide, the valve block that the correspondence of admitting air is closed, when the carbon dioxide after being compressed is discharged, the valve block that the exhaust corresponds is opened, and then realize carbon dioxide's compression under air valve subassembly and cylinder head effect, under gaseous effect, the valve block can produce the swing, and then beat respectively on valve plate and stopper, set valve block tip lift range to 0.3-3mm, can be under the prerequisite of guaranteeing air valve passage area, effectively reduce the vibration and the noise that the air valve subassembly produced, simultaneously this compressor is oil-free compressor, and therefore, emulsification of the lubricating oil does not occur.
2. The crankshaft bearing is lubricated by grease, the grease is injected into the crankshaft bearing at one time, the condition of emulsification of lubricating oil is avoided, and the sealing ring of the bearing can realize the sealing of the middle bearing.
3. The reciprocating compressor has reciprocating inertia force along with the rotation of the crankshaft, the reciprocating inertia force is externally expressed as machine vibration, and the arrangement of the balance weight can reduce unbalanced force to the maximum extent and ensure the minimum vibration of the compressor.
4. The first guide ring is arranged to prevent dry friction caused by direct contact between the piston and the cylinder, and the dry friction only occurs between the first guide ring and the cylinder; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, due to the reason of heating expansion, gaps need to be reserved between the first guide ring and the piston and between the first guide ring and the inner wall of the air cylinder, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the scheme can accurately calculate, the sum of the gaps on the inner side and the outer side of the first guide ring is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
5. The first connecting rod bearing and the second connecting rod bearing are lubricated by grease, so that the condition of lubricating oil emulsification is avoided, and the sealing of the middle bearing can be realized by the bearing sealing ring.
6. The second guide ring and the piston ring are made of self-lubricating materials, so that self-lubrication is realized, no lubricating oil is required to be added in the running process of the compressor, and the hidden danger of lubricating oil emulsification is completely eradicated; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, gaps need to be reserved between the second guide ring and the lengthened piston and between the second guide ring and the inner wall of the lengthened cylinder, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the sum of the gaps between the inner side and the outer side of the second guide ring is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
7. The pneumatic valve during operation can produce the noise, furthest reduces the lift of valve block, the valve block is hugged closely on the valve plate, prevent gaseous reverse circulation, can paste the stopper after the valve plate is opened on, because the operating condition of valve block is the swing back and forth, can pat respectively on valve plate and stopper, if the lift is too big can cause very big vibration and noise, this scheme is under the prerequisite of guaranteeing the air current channel area, set 1mm with the lift of valve block into, vibration and noise have effectively been reduced.
8. The proper vibration absorber is configured for the compressor, the performance parameter range of the vibration absorber is determined according to the overall mass of the compressor, the machine running frequency, the gravity center position and other parameters, and the vibration absorber with the matched model is finally selected, so that the transmission of the vibration of the compressor can be reduced.
Drawings
FIG. 1 is a cross-sectional view of a marine oil-free low-vibration noise carbon dioxide compressor according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a counterweight according to an embodiment of the present invention;
FIG. 3 is a schematic view of the piston according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of a valve assembly of the present invention;
wherein the content of the first and second substances,
a crankcase-1, a crankshaft bearing-11, a bearing seat-12 and an end cover-13;
crankshaft-2, counterweight-21;
a cylinder-3, a piston-31, a first guide ring-32, a piston pin-33, a blind hole-331 and a plug-332;
a lengthened cylinder-4, a lengthened piston-41, a second guide ring-42 and a piston ring-43;
an air valve component-5, a valve plate-51, an air hole-52, a valve plate-53 and a limiter-54;
a cylinder head-6;
a connecting rod-7, a first connecting rod bearing-71 and a second connecting rod bearing-72.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the marine oil-free low-vibration noise carbon dioxide compressor comprises a crankcase 1, a crankshaft 2, a cylinder 3, an extended cylinder 4, a valve assembly 5, a cylinder cover 6 and a connecting rod 7.
As shown in fig. 1, the crankcase 1 is a box body, and a crankshaft 2 is rotatably mounted in the crankcase 1; specifically, a crankshaft bearing 11 is installed at a first end of the crankcase 1, a bearing seat 12 is installed at a second end of the crankcase 1 through a screw, the crankshaft bearing 11 is installed on the bearing seat 12, the two crankshaft bearings 11 are coaxial, the crankshaft bearings 11 are lubricated by grease, and the crankshaft bearings 11 are provided with bearing seal rings; the crankshaft 2 is mounted in two crankshaft bearings 11, a second end of the crankshaft 2 extends from a bearing seat 12, an end cover 13 is arranged outside the first end of the crankshaft 2, and the end cover 13 is mounted on the crankcase 1 through screws.
As shown in fig. 1, the top of the crankcase 1 is open, the opening of the crankcase 1 is provided with a cylinder 3, the cylinder 3 is mounted at the opening of the crankcase 1 through a screw, the cylinder 3 is coaxially provided with an extension cylinder 4, the extension cylinder 4 is mounted on the cylinder 3 through a screw, the cylinder 3 and the extension cylinder 4 are in one-to-one correspondence, the cylinder 3 is internally provided with a piston 31 in a sliding manner, the extension cylinder 4 is internally provided with an extension piston 41 in a sliding manner, and the extension piston 41 is fixedly connected with the piston 31.
As shown in fig. 3, an annular groove is formed in the exterior of the piston 31, a first guide ring 32 is sleeved in the annular groove, the first guide ring 32 is made of a self-lubricating material, such as polytetrafluoroethylene, and the sum of the clearance between the first guide ring 32 and the piston 31 and the clearance between the first guide ring 32 and the inner wall of the cylinder 3 is 0.05-0.075mm, that is, the sum of the clearances of the inner side and the outer side of the first guide ring 32 is 0.05-0.075 mm.
As shown in fig. 1, a plurality of ring grooves are formed in the exterior of the extension piston 41, a second guide ring 42 is sleeved in the ring groove below the extension piston 41, and a piston ring 43 is sleeved in the ring groove above the extension piston 41, in this embodiment, 1 second guide ring 42 and 4 piston rings 43 are installed on the extension piston 41, the second guide ring 42 and the piston rings 43 are both made of self-lubricating materials, such as polytetrafluoroethylene, and the sum of the gap between the second guide ring 42 and the extension piston 41 and the gap between the second guide ring 42 and the inner wall of the extension cylinder 4 is 0.05-0.075mm, that is, the sum of the gaps on the inner side and the outer side of the second guide ring 42 is 0.05-0.075 mm.
As shown in fig. 1, the piston 31 is connected to the crankshaft 2 via a connecting rod 7; specifically, a first end of the connecting rod 7 is mounted on the crankshaft 2 through a first connecting rod bearing 71; the piston 31 is provided with a piston pin 33, the second end of the connecting rod 7 is mounted on the piston pin 33 through a second connecting rod bearing 72, specifically, the piston pin 33 is inserted into the piston 31 and the second connecting rod bearing 72 in sequence, the piston pin 33 is perpendicular to the axis of the piston 31, the piston pin 33 is perpendicular to the connecting rod 7, two ends of the piston pin 33 are respectively provided with a snap spring for limiting the piston pin, and the snap springs are mounted in piston pin holes of the piston 31.
As shown in fig. 3, the piston pin 33 is provided with a blind hole 331, the blind hole 331 is filled with grease, and the opening of the blind hole 331 is sealed by a plug 332; the side wall of the piston pin 33 is provided with a hole leading to the interior of the blind hole 331, which hole leads outwardly to the inner wall of the second link bearing 72 for supplying grease to the second link bearing 72.
The first connecting rod bearing 71 and the second connecting rod bearing 72 are lubricated by grease, the first connecting rod bearing 71 and the second connecting rod bearing 72 are provided with bearing sealing rings, and the mounting modes of the bearing sealing rings and the bearing sealing rings are the prior art.
As shown in fig. 1, an air valve assembly 5 is arranged on the lengthened air cylinder 4, a cylinder head 6 is arranged on the air valve assembly 5, and the cylinder head 6 is the prior art, so that a person skilled in the art can adapt to the corresponding cylinder head 6 according to actual requirements.
As shown in fig. 4, the air valve assembly 5 includes a valve plate 51 mounted on the extended cylinder 4, an air hole 52 is formed in the valve plate 51, a valve plate 53 and a stopper 54 are disposed on the valve plate 51, the valve plate 53 is located between the valve plate 51 and the stopper 54, the valve plate 53 can cover the air hole 52, when air blows off the valve plate 53 through the air hole 52, the valve plate 53 is attached to the lower side of the stopper 54, and the lift range of the end portion of the valve plate 53 is 0.3-3 mm.
As shown in fig. 4, the valve plate 53 and the stopper 54 are mounted on the valve plate 51 by screws, the stopper 54 is plate-shaped, and an end of the stopper 54 close to the air hole 52 is tilted in a direction away from the valve plate 51, preferably, a distance between the tilted end of the stopper 54 and the valve plate 51 is 1mm, which is an optimal lift distance of the end of the valve plate 53.
The number and the positions of the air valves of the air valve assembly 5 are correspondingly set according to actual air inlet and exhaust conditions, so that the air control requirement of the compressor during normal work is met.
As shown in fig. 1, each group of cylinders 3, pistons 31, extension cylinders 4, extension pistons 41, valve assemblies 5, cylinder heads 6, and connecting rods 7 form a "single cylinder", in this embodiment, the compressor has a double-cylinder structure, only one of which can be shown in fig. 1 due to a cross-sectional view, as shown in fig. 2, two connecting rods 7 are both mounted on the crankshaft 2, the reciprocating compressor has a reciprocating inertia force and exhibits machine vibration externally along with the rotation of the crankshaft 2, a balance weight 21 is disposed on the crankshaft 2, the balance weight 21 is disposed to minimize unbalanced force and ensure minimum compressor vibration, according to the use requirement, a person skilled in the art can correspondingly set the balance weight 21 to meet the balance requirement, in this embodiment, the balance weight 21 is accurately calculated, before assembly, each moving part is accurately weighed, the masses of the moving parts in the two cylinders are controlled to be substantially equal, the error is less than 1g, the counterweight 21 mass error is less than 1g, and the counterweight 21 mass error refers to the difference between the calculated mass of the counterweight 21 and the actual manufacturing mass. Therefore, the unbalance force is reduced to the maximum extent, and the vibration of the compressor is ensured to be minimum.
The compressor is provided with a shock absorber. The method is characterized in that a proper shock absorber is configured for the compressor, the performance parameter range of the shock absorber is determined according to the overall mass of the compressor, the machine running frequency, the gravity center position and other parameters, the shock absorber with the matched model is finally selected, the transmission of the vibration of the compressor can be reduced, and the shock absorber and the mounting mode of the shock absorber are the prior art.
The working principle is as follows:
as shown in fig. 1, the marine oil-free low-vibration noise carbon dioxide compressor of the present invention is in practical use, the crankshaft 2 is driven by an external driving device to rotate, the crankshaft 2 drives the connecting rod 7 to move, and further drives the piston 31 and the extension piston 41 to reciprocate, when carbon dioxide enters the compressor, the valve plate 53 corresponding to intake air is opened, when the compressor compresses carbon dioxide, the valve plate 53 corresponding to intake air is closed, when compressed carbon dioxide is discharged, the valve plate 53 corresponding to exhaust air is opened, and further carbon dioxide is compressed under the action of the air valve assembly 5 and the cylinder head 6, under the action of air, the valve plate 53 swings and further respectively hits the valve plate 51 and the stopper 54, the end range of the valve plate 53 is set to 0.3-3mm, and on the premise of ensuring the area of the air flow passage, vibration and noise generated by the air valve assembly 5 are effectively reduced, meanwhile, the compressor is an oil-free compressor, so that the condition of lubricating oil emulsification cannot be caused.
The crankshaft bearing 11 is lubricated by grease, the grease is injected into the crankshaft bearing 11 at one time, the condition of emulsification of lubricating oil is avoided, and the sealing ring of the bearing can realize the sealing of the middle bearing.
The arrangement of the first guide ring 32 can prevent dry friction generated by direct contact between the piston 31 and the cylinder 3, and the dry friction only appears between the first guide ring 32 and the cylinder 3, in practical application, as the first guide ring 32 is made of a non-metal self-lubricating material, the movement can be continuous, and no lubricating oil is required to be added in the running process of the compressor, so that the hidden danger of lubricating oil emulsification is completely eradicated; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, due to the reasons of heating expansion, gaps need to be reserved between the first guide ring 32 and the piston 31 and between the first guide ring 32 and the inner wall of the cylinder 3, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the scheme can accurately calculate, the sum of the gaps on the inner side and the outer side of the first guide ring 32 is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
The first connecting rod bearing 71 and the second connecting rod bearing 72 are lubricated by grease, so that the condition of lubricating oil emulsification is avoided, and the sealing of the middle bearing can be realized by the bearing sealing ring.
The second guide ring 42 and the piston ring 43 are made of self-lubricating materials, so that self-lubrication is realized, no lubricating oil is required to be added in the running process of the compressor, and the hidden danger of lubricating oil emulsification is completely avoided; meanwhile, the labor intensity and the cost of operation and maintenance are reduced, gaps need to be reserved between the second guide ring 42 and the lengthened piston 41 and between the second guide ring 42 and the inner wall of the lengthened cylinder 4, the size of the gaps directly influences the vibration, the noise and the operation reliability of the compressor, the sum of the gaps on the inner side and the outer side of the second guide ring 42 is controlled to be 0.05-0.075mm, and the vibration and the noise are greatly reduced.
The pneumatic valve during operation can produce the noise, furthest reduces the lift of valve block 53, valve block 53 hugs closely on valve plate 51, prevent the reverse circulation of gas, can paste stopper 54 after valve plate 51 is opened, because the operating condition of valve block 53 is the swing back and forth, can pat respectively on valve plate 51 and stopper 54, if the lift is too big can cause very big vibration and noise, this scheme is under the prerequisite of guaranteeing the air current channel area, set 1mm with the lift of valve block 53 into, vibration and noise have effectively been reduced.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a marine no oil is hanged down and is shaken noise carbon dioxide compressor which characterized in that: comprises a crankcase (1), wherein a crankshaft (2) is rotatably arranged in the crankcase (1);
the crank shaft is characterized in that a cylinder (3) is arranged on the crank shaft case (1), a lengthened cylinder (4) is arranged on the cylinder (3), a piston (31) is arranged in the cylinder (3) in a sliding manner, a lengthened piston (41) is arranged in the lengthened cylinder (4) in a sliding manner, the lengthened piston (41) is connected with the piston (31), and the piston (31) is connected with the crank shaft (2) through a connecting rod (7);
an air valve assembly (5) is arranged on the lengthened air cylinder (4), and an air cylinder cover (6) is arranged on the air valve assembly (5);
the air valve assembly (5) comprises a valve plate (51) installed on the lengthened air cylinder (4), an air hole (52) is formed in the valve plate (51), a valve plate (53) and a limiter (54) are arranged on the valve plate (51), the valve plate (53) is located between the valve plate (51) and the limiter (54), the valve plate (53) can cover the air hole (52), when the valve plate (53) is flushed through the air hole (52), the valve plate (53) is attached to the lower portion of the limiter (54), and the lift range of the end portion of the valve plate (53) is 0.3-3 mm.
2. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: a crankshaft bearing (11) is installed at the first end of the crankcase (1), a bearing seat (12) is installed at the second end of the crankcase (1), the crankshaft bearing (11) is installed on the bearing seat (12), the two crankshaft bearings (11) are coaxial, the crankshaft bearings (11) are lubricated by grease, and bearing sealing rings are arranged on the crankshaft bearings (11);
the crankshaft (2) is arranged in two crankshaft bearings (11), the second end of the crankshaft (2) extends out of the bearing seat (12), and an end cover (13) is arranged outside the first end of the crankshaft (2).
3. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: the crankshaft (2) is provided with a balance weight (21).
4. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: the piston (31) outside is seted up the annular, overlaps in the annular and establishes first guide ring (32), and first guide ring (32) adopt self-lubricating material to make, and the size of clearance sum between first guide ring (32) and piston (31) and between first guide ring (32) and cylinder (3) inner wall is 0.05-0.075 mm.
5. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: the first end of the connecting rod (7) is arranged on the crankshaft (2) through a first connecting rod bearing (71);
a piston pin (33) is arranged in the piston (31), the second end of the connecting rod (7) is installed on the piston pin (33) through a second connecting rod bearing (72), the first connecting rod bearing (71) and the second connecting rod bearing (72) are lubricated by grease, and bearing sealing rings are arranged on the first connecting rod bearing (71) and the second connecting rod bearing (72).
6. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 5, characterized in that: the piston pin (33) is provided with a blind hole (331), lubricating grease is filled in the blind hole (331), and the opening of the blind hole (331) is sealed by a plug (332);
the side wall of the piston pin (33) is provided with a hole which is communicated with the inside of the blind hole (331), and the hole is communicated with the inner wall of the second connecting rod bearing (72) outwards to supplement lubricating grease for the second connecting rod bearing (72).
7. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: a plurality of annular are seted up to extension piston (41) outside, and second guide ring (42) are established to the cover in the annular of below, and piston ring (43) are established to the cover in the annular of top, and second guide ring (42), piston ring (43) all adopt self-lubricating material to make, and the size of clearance sum between second guide ring (42) and extension piston (41) and second guide ring (42) and extension cylinder (4) inner wall is 0.05-0.075 mm.
8. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 1, characterized in that: valve block (53), stopper (54) pass through the screw mounting on valve plate (51), stopper (54) are platelike, and the tip that stopper (54) are close to gas pocket (52) to the perk of the direction of keeping away from valve plate (51).
9. The marine all oil-free low-vibration noise carbon dioxide compressor according to claim 7, characterized in that: the distance between the tilting end part of the limiting stopper (54) and the valve plate (51) is 1 mm.
10. An all oil-free low vibration noise carbon dioxide compressor for a ship according to any one of claims 1 to 9, wherein: the compressor is provided with a shock absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021188904.9U CN212508697U (en) | 2020-06-23 | 2020-06-23 | Marine oil-free low-vibration noise carbon dioxide compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021188904.9U CN212508697U (en) | 2020-06-23 | 2020-06-23 | Marine oil-free low-vibration noise carbon dioxide compressor |
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