CN114483528A - Energy-saving modification method for high-pressure S6M50-312 type nitrogen-hydrogen compressor - Google Patents
Energy-saving modification method for high-pressure S6M50-312 type nitrogen-hydrogen compressor Download PDFInfo
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- CN114483528A CN114483528A CN202210069091.9A CN202210069091A CN114483528A CN 114483528 A CN114483528 A CN 114483528A CN 202210069091 A CN202210069091 A CN 202210069091A CN 114483528 A CN114483528 A CN 114483528A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention discloses an energy-saving modification method of a high-pressure 6M50-312 type nitrogen-hydrogen compressor, which comprises the following steps: the inner diameter of each stage of cylinder body is reformed, the piston is changed from split type to integral type, and the outer diameter of each stage of piston, the weight of each stage of piston, the outer diameter of each stage of air valve, the piston ring and the support ring of each stage of piston are reformed. After the improvement, the air pumping amount of each compressor can be increased by not less than 30%, the original design requirements of the compressor are broken through, the operation power of the compressor is kept unchanged, the energy consumption is not increased, the output of a compressor using enterprise is increased, a large amount of energy is saved, and great economic benefits are achieved.
Description
Technical Field
The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to an energy-saving modification method for a high-pressure 6M50-312 type nitrogen-hydrogen compressor.
Background
The large-scale compressor is one of the common equipments in chemical enterprises, and is difficult to modify after installation and use, and the modification difficulty and complexity are well known to those skilled in the art. Moreover, for different models of compressors, the modification method cannot be uniform due to different structures or pressures, and the modification method is modified correspondingly according to different models. For example, the 6M50 type raw material gas compressor is a common reciprocating nitrogen-hydrogen gas compressor (see fig. 1), which is one of the key equipments in chemical enterprises in China, and the total number of the equipments in the country is about 100, and it is necessary to ensure that the equipment operates normally 24 hours a day. Generally, a 6M50 type compressor includes a main motor 100, a multi-stage compression cylinder block 101 in which pistons are provided, and a gas valve 102 provided on the cylinder block 101; the piston and gas valve 102 are important components in the performance of the compressor. The Chinese patent numbers are: 201110332306.3, the invention patent application named "6M 50 type raw gas compressor increases the gas beating amount, energy conservation and emission reduction' improves the existing 6M50 type compressor, the improvement method includes the following steps: 1) the pistons in the cylinders of each stage of the compressor are changed from split type to integral type; the piston body of the piston is of an integral structure, and an annular cavity is arranged in the piston body; 2) the thickness of the piston of each stage of cylinder is increased by 0.5 to 0.8 percent on the basis of the existing design standard of the thickness of the piston; 3) the air suction valve and the air discharge valve of each stage of cylinder comprise valve seats, valve plates, springs and lift limiters; the valve seat, the valve plate, the spring and the lift limiter are connected and fixed through a bolt and a nut in sequence; one end of the spring is fixed on the lift limiter, and the other end of the spring props against the back surface of the valve plate, so that the front surface of the valve plate is tightly attached to the valve seat to form a sealing surface; increasing the valve plate lift of the suction valve and the exhaust valve on each stage of cylinder by 11.5-13.6% on the basis of the existing valve plate lift design standard; 4) the equivalent flow area of an intake valve and an exhaust valve on each stage of cylinder is increased by 14.7-15.1% on the basis of the existing equivalent flow area design standard. The method solves the problems of serious piston abrasion and frequent replacement, and also solves the phenomenon that the compressor of the model is pulled by a big horse to be a small car. However, field practice shows that the existing 6M50-312 type nitrogen-hydrogen compressor can only achieve the design requirements, but cannot obtain greater energy-saving effect, thereby breaking through the original design requirements.
Disclosure of Invention
The invention aims to solve the technical problem of providing an energy-saving modification method of a high-pressure 6M50-312 type nitrogen-hydrogen compressor; the energy-saving transformation method can increase the gas production amount by more than or equal to 30 percent, breaks through the original design requirement of the compressor, keeps the operation power unchanged, does not increase the energy consumption, increases the yield for the compressor using enterprises, saves a large amount of energy, and has great economic benefit. The term "high pressure" in the present invention means that 314kg of pressure can be provided.
The existing 314kg high-pressure 6M50-312 model nitrogen-hydrogen compressor has the following structural parameters:
the running power of the motor is 5000 kw;
the inner diameter of the first-stage cylinder body is 1400 mm; the inner diameter of the secondary cylinder body is 900 mm;
the inner diameter of the third-stage cylinder body is 555 mm; the inner diameter of the four-stage cylinder body is 360 mm;
the inner diameter of the five-stage cylinder body is 225 mm; the inner diameter of the six-stage cylinder body is 195 mm;
primary piston weight 1170.8 kg; the secondary piston weight is 1189 kg;
the tertiary piston weight is 312 kg; the weight of the four-stage piston is 308.6 kg;
the weight of the five-stage piston is 96.3 kg;
the outer diameter of the first-stage open type air valve is 365 mm; the outer diameter of the two-stage open type air valve is 275 mm;
the outer diameter of the three-level open type air valve is 197 mm; the outer diameter of the four-stage open type air valve is 205 mm;
the outer diameter of the five-stage open type air valve is 175 mm; the outer diameter of the six-stage open type air valve is 165 mm;
the diameter of the primary piston ring is 1400 mm; the diameter of the secondary piston ring is 900 mm;
the diameter of the third-stage piston ring is 555 mm; the diameter of the four-stage piston ring is 360 mm;
the diameter of a five-stage piston ring is 225 mm; the diameter of the six-stage piston ring is 195 mm;
the diameter of the primary support ring is 1400 mm; the diameter of the secondary support ring is 900 mm;
the diameter of the tertiary support ring is 555 mm; the diameter of the four-stage support ring is 360 mm;
the diameter of the five-stage support ring is 225 mm; the diameter of the six-stage support ring is 195 mm.
In order to solve the technical problems, the invention adopts the following technical scheme：
An energy-saving modification method for a high-pressure 6M50-312 type nitrogen-hydrogen compressor comprises the following steps:
s1, changing the inner diameter of the first-stage cylinder from 1400mm to 1384-1386mm, changing the inner diameter of the second-stage cylinder from 900mm to 895-896mm, changing the inner diameter of the third-stage cylinder from 555mm to 565-567mm, changing the inner diameter of the fourth-stage cylinder from 360mm to 385-387mm, changing the inner diameter of the fifth-stage cylinder from 225mm to 235-237mm, and changing the inner diameter of the sixth-stage cylinder from 195mm to 198-200 mm;
s2, the piston is changed from split type to integral type, and
the weight of the primary piston is changed from 1170.8kg to 751kg in 749-;
s3, changing the outer diameter 365mm of the first-stage open air valve into 374-;
s4, changing the diameter of the first-stage piston ring to 1384-1386mm, the diameter of the second-stage piston ring to 895-897mm, the diameter of the third-stage piston ring to 555mm to 565-567mm, the diameter of the fourth-stage piston ring to 360mm to 385-387mm, the diameter of the fifth-stage piston ring to 225mm to 235-237mm, and the diameter of the sixth-stage piston ring to 195mm to 198-200 mm;
the diameter of the first-level support ring is changed to 1384-1386mm, the diameter of the second-level support ring is changed to 895-897mm, the diameter of the third-level support ring is changed to 555-567 mm, the diameter of the fourth-level support ring is changed to 385-387mm, the diameter of the fifth-level support ring is changed to 235-237mm, and the diameter of the sixth-level support ring is changed to 198-200 mm;
preferably, in step S1, the change of the inner diameter of the primary cylinder from 1400mm to 1384-1386mm is made by concentric modification by means of row grinding.
Preferably, in step S1, the change of the inner diameter of the secondary cylinder from 900mm to 895-896mm is made by concentric modification through the traveling crane finish grinding.
Preferably, in step S1, the change of the inner diameter of the tertiary cylinder from 555mm to 565 and 567mm is directly obtained by cylinder replacement.
Preferably, in step S1, the change of the inner diameter of the four-stage cylinder from 360mm to 385-387mm is directly obtained by cylinder replacement.
Preferably, in step S1, the change of the inner diameter of the five-stage cylinder from 225mm to 235-237mm is directly obtained by cylinder replacement.
Preferably, in step S1, the change of the inner diameter of the six-stage cylinder from 195mm to 198-200mm is made by concentric modification by means of row grinding.
Preferably, in step S2, the change of the primary piston weight 1170.8kg to 749-751kg is carried out by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
Preferably, in step S2, the change of the secondary piston weight 1189kg to 419-421kg is made by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is hard-oxidized at 500 degrees.
Preferably, in step S2, the change of the tertiary piston weight 312kg to 209-211kg is made by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
Preferably, in step S2, the four-stage piston weight 308.6kg is changed to 188-190kg by replacing the existing raw iron casting JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
Preferably, in step S2, the change of the weight of the five-stage piston from 96.3kg to 47-49kg is carried out by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
The starting materials of the present invention are commercially available, unless otherwise specified, and the equipment used in the present invention may be any equipment conventionally used in the art or may be any equipment known in the art.
The invention has the following beneficial effects：
1) After the 314kg high-pressure 6M50-312 type nitrogen-hydrogen compressor transformed by the transformation method is actually operated, the gas injection amount can be increased by more than 30 percent under the condition of keeping the existing operation power of 5000kw unchanged (without increasing energy consumption), and the original design requirements of the compressor are broken through, so that the yield of a compressor using enterprise is increased by more than 30 percent, a large amount of energy is saved, and the invention has great economic benefit.
Drawings
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings
FIG. 1 is a schematic diagram of the overall structure of a conventional 6M50- (66) -511 model nitrogen-hydrogen compressor;
FIG. 2 is a schematic diagram of the overall structure of a conventional 314kg high-pressure 6M50-312 model nitrogen-hydrogen compressor;
FIG. 3 is a schematic structural diagram of a piston of a modified 314kg high-pressure 6M50-312 model nitrogen-hydrogen compressor.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Based on the prior art, referring to fig. 2 and 3, the invention provides an energy-saving modification method of a high-pressure 6M50-312 type nitrogen-hydrogen gas compressor, which comprises the following steps:
s1, changing the inner diameter of the first-stage cylinder 201 from 1400mm to 1384-; it can be understood that, from the data, the data increase of the three-stage cylinder, the four-stage cylinder and the five-stage cylinder is larger;
s2, the piston 300 is changed from split type to integral type, the 'split type to integral type' in the step refers to the Chinese patent number as follows: 201110332306.3, entitled "6M 50 type raw material gas compressor improvement method for increasing gas production amount, saving energy and reducing emission"; because the split type piston is easier to cause the temperature in the cylinder body to rise, the split type piston is transformed into the integral type by the transformation method of the patent, the transformation can not only reduce the internal temperature of the cylinder body, but also prolong the service life of the piston ring and the support ring;
the primary piston weight 1170.8kg is changed into 749-751kg, and it can be understood that the step is not enough to only change the primary piston from split type to integral type, and because the existing piston material is iron castings JT25-47C, the piston material needs to be replaced by aluminum alloy treated by 500-degree hard oxidation from the iron castings JT 25-47C;
the weight of the secondary piston 1189kg is changed into 419-421kg, and it can be understood that the step is not enough to only change the primary piston from split type to integral type, and because the existing piston material is iron castings JT25-47C, the piston material needs to be replaced by aluminum alloy subjected to 500-degree hard oxidation treatment from the iron castings JT 25-47C;
the weight of the three-stage piston is changed into 209-211kg, and it can be understood that the step is not enough to only change the one-stage piston from split type to integral type, and because the existing piston material is iron castings JT25-47C, the piston material needs to be replaced by aluminum alloy treated by 500-degree hard oxidation from the iron castings JT 25-47C;
changing the weight of the four-stage piston to be 188-190kg, it can be understood that the step is not enough to change the one-stage piston from split type to integral type, because the existing piston material is iron casting JT25-47C, the piston material needs to be replaced by aluminum alloy treated by 500-degree hard oxidation from iron casting JT 25-47C;
changing the weight of 96.3kg of a five-stage piston into 47-49 kg; it will be appreciated that this step is not sufficient to modify the single-stage piston from split type to monolithic type, and since the piston material used in the prior art is iron castings JT25-47C, it is also necessary to replace the piston material with an aluminum alloy treated by 500 degrees hard oxidation from iron castings JT 25-47C;
it should be noted that in the modification step, the purpose of the invention can be achieved without modifying the six-stage piston;
s3, changing the outer diameter 365mm of the first-stage open air valve into 374-;
s4, changing the diameter of the first-stage piston ring 301 to 1384-1386mm, the diameter of the second-stage piston ring 900mm to 895-897mm, the diameter of the third-stage piston ring 555mm to 565-567mm, the diameter of the fourth-stage piston ring 360mm to 385-387mm, the diameter of the fifth-stage piston ring 225mm to 235-237mm, and the diameter of the sixth-stage piston ring 195mm to 198-200 mm;
the diameter of the first-level support ring 302 is changed to 1384-1386mm, the diameter of the second-level support ring 900mm is changed to 895-897mm, the diameter of the third-level support ring 555mm is changed to 565-567mm, the diameter of the fourth-level support ring 360mm is changed to 385-387mm, the diameter of the fifth-level support ring 225mm is changed to 235-237mm, and the diameter of the sixth-level support ring 195mm is changed to 198-200 mm.
Generally speaking, as the transformation of the inner diameter of the cylinder body is increased, the piston is correspondingly enlarged, the load of the whole compressor is increased, and the air-pumping quantity is increased along with the increase of the load, so that the economic value is not high. However, the improvement of the inner diameter of the cylinder body is increased, the piston is correspondingly enlarged, and the existing load 5000kw running power can still be maintained, which is caused by the following reasons: firstly, the inner diameters of the three-stage cylinder body, the four-stage cylinder body, the five-stage cylinder body and the six-stage cylinder body are greatly increased, so that the pumping capacity can be increased; secondly, as the inner diameter of the partial cylinder body is increased, the total weight of the 5 grades of pistons is reduced from 3069.7kg to 1617kg, so that a great deal of energy consumption is saved; in conclusion, by the means, the invention can increase the air-inflating quantity by more than 30% under the condition of keeping the existing operating power of 5000kw unchanged (without increasing energy consumption), and breaks through the original design requirements of the compressor, thereby increasing the yield by about 32% for the compressor using enterprises, saving a large amount of energy and having great economic benefit.
Preferably, in step S1, the change of the inner diameter of the primary cylinder from 1400mm to 1384-1386mm is made by concentric modification by means of row grinding.
As an example, in step S1, the inner diameter of the secondary cylinder is changed from 900mm to 895-896mm by concentric modification through the traveling finish.
As an example, in step S1, the change of the inner diameter of the tertiary cylinder from 555mm to 565-.
As an example, in step S1, the change of the inner diameter of the four-stage cylinder from 360mm to 385-387mm is directly obtained by cylinder replacement.
As an embodiment, in the step S1, the inner diameter of the five-stage cylinder is changed from 225mm to 235-237mm directly through cylinder replacement.
As an example, in the step S1, the inner diameter of the six-stage cylinder is changed from 195mm to 198-200mm by concentric transformation through the traveling finish grinding.
As an example, in the step S2, the change of the primary piston weight 1170.8kg to 749-751kg is carried out by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
As an example, in step S2, the secondary piston weight 1189kg is changed to 419-421kg by replacing the existing raw iron casting JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
As an example, in step S2, the change of the tertiary piston weight of 312kg to 209-211kg is made by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 that has been hard-oxidized at 500 degrees.
As an example, in step S2, the four-stage piston weight 308.6kg is changed to 188-190kg by replacing the existing raw iron casting JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
As an example, in step S2, the change of the weight of the five-stage piston from 96.3kg to 47-49kg is made by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is hard-oxidized at 500 degrees.
Example 1
A314 kg high-pressure 6M50-312 type nitrogen-hydrogen compressor energy-saving reconstruction method for a compressor workshop of Shanxi jin chemical limited company for manufacturing a group Tianyuan Shanxi apparatus for energy control includes the following steps:
s1, changing the inner diameter of the first-stage cylinder body from 1400mm to 1385mm, changing the inner diameter of the second-stage cylinder body from 900mm to 895mm, changing the inner diameter of the third-stage cylinder body from 555mm to 566mm, changing the inner diameter of the fourth-stage cylinder body from 360mm to 386mm, changing the inner diameter of the fifth-stage cylinder body from 225mm to 236mm, and changing the inner diameter of the sixth-stage cylinder body from 195mm to 199 mm;
s2, the piston is changed from split type to integral type, and
the weight of the primary piston is changed from 1170.8kg to 750 kg;
changing the weight of a secondary piston to 1189kg into 420 kg;
the weight of the three-stage piston is changed into 210 kg;
the weight of the four-stage piston is changed to be 189kg from 308.6 kg;
changing the weight of a five-stage piston to 96.3kg into 48 kg;
s3, changing 365mm of the first-stage open air valve into 375mm, 275mm of the second-stage open air valve into 320mm, 197mm of the third-stage open air valve into 285mm, 205mm of the fourth-stage open air valve into 235mm, 175mm of the fifth-stage open air valve into 235mm, and 165mm of the sixth-stage open air valve into 235 mm;
s4, changing the diameter of a first-stage piston ring from 1400mm to 1385mm, changing the diameter of a second-stage piston ring from 900mm to 896mm, changing the diameter of a third-stage piston ring from 555mm to 566mm, changing the diameter of a fourth-stage piston ring from 360mm to 386mm, changing the diameter of a fifth-stage piston ring from 225mm to 236mm, and changing the diameter of a sixth-stage piston ring from 195mm to 199mm, as shown in FIG. 3;
the diameter of the first-stage support ring is changed to 1385mm, the diameter of the second-stage support ring is changed to 896mm, the diameter of the third-stage support ring is changed to 566mm, the diameter of the fourth-stage support ring is changed to 386mm, the diameter of the fifth-stage support ring is changed to 236mm, and the diameter of the sixth-stage support ring is changed to 199mm, which is shown in FIG. 3;
in the step S1, the inner diameter of the primary cylinder body is changed from 1400mm to 1384-1386mm, which is to carry out concentric transformation by fine grinding of a travelling crane;
in the step S1, the inner diameter of the secondary cylinder is changed from 900mm to 895-896mm by carrying out concentric transformation through traveling fine grinding;
in the step S1, the change of the inner diameter of the tertiary cylinder from 555mm to 565-;
in the step S1, the change of the inner diameter of the four-stage cylinder from 360mm to 385-387mm is directly obtained by cylinder replacement;
in step S1, the inner diameter of the five-stage cylinder is changed from 225mm to 235-237mm by directly replacing the cylinder;
in the step S1, the inner diameter of the six-stage cylinder body is changed from 195mm to 198-200mm by carrying out concentric transformation through traveling fine grinding;
in the step S2, the change of the primary piston weight 1170.8kg to 749-751kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 subjected to 500-degree hard oxidation treatment;
in the step S2, the change of the secondary piston weight 1189kg to 419-421kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 subjected to hard oxidation treatment at 500 ℃;
in the step S2, the change of the tertiary piston weight 312kg to 209-211kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 subjected to 500-degree hard oxidation treatment;
in the step S2, the step of changing the weight of the four-stage piston to be 308.6kg to be 188-190kg is to replace the existing raw material iron casting JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment;
in step S2, the change of the weight of the five-stage piston from 96.3kg to 47-49kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
The examination conditions of the 1 improved 314kg high-pressure 6M50-312 type nitrogen-hydrogen compressor are as follows:
analysis from the perspective of increasing air-pumping quantity
1) The operating power of the improved compressor is maintained at 5000 kw;
2) the produced product gas (air pumping amount) is increased by 32%;
3) the problem of frequent replacement of the piston ring and the support ring is solved;
4) calculating according to the increase of 32% of the inflating quantity after modification, namely:
increase the air output per minute by 312m3*0.31＝96.72m3，
Increase of air pumping rate by 96.72 × 60 ═ 5803.2m per hour3，
Increasing air pumping quantity 5803.2m every day3*24＝139276.8m3，
The gas production amount is increased to 139276.8m every year3*365＝50836032m3。
Second, from the perspective of energy conservation
After the improvement, each compressor can save 38400 degrees/day under the condition of the same yield,
converted to standard coal savings of 38400 x 365 x 0.36/1000-18164.7 tons/year,
reduce carbon dioxide emissions 18164.7 0.269-4886.3 tons/year,
the sulfur dioxide emission is reduced by 18164.7 × 0.085 to 1544 tons/year.
As one skilled in the art understands, the 314kg high-pressure 6M50-312 model nitrogen-hydrogen compressor is counted about 100 nationwide, so if the model is modified in a larger scale, huge energy materials can be saved, and the discharge of a large amount of harmful gases can be reduced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (10)
1. An energy-saving modification method for a high-pressure 6M50-312 type nitrogen-hydrogen compressor is characterized by comprising the following steps:
s1, changing the inner diameter of the first-stage cylinder from 1400mm to 1384-1386mm, changing the inner diameter of the second-stage cylinder from 900mm to 895-896mm, changing the inner diameter of the third-stage cylinder from 555mm to 565-567mm, changing the inner diameter of the fourth-stage cylinder from 360mm to 385-387mm, changing the inner diameter of the fifth-stage cylinder from 225mm to 235-237mm, and changing the inner diameter of the sixth-stage cylinder from 195mm to 198-200 mm;
s2, the piston is changed from split type to integral type, and
the weight of the primary piston is changed from 1170.8kg to 751kg in 749-;
s3, changing the outer diameter 365mm of the first-stage open air valve into 374-;
s4, changing the diameter of the first-stage piston ring to 1384-1386mm, the diameter of the second-stage piston ring to 895-897mm, the diameter of the third-stage piston ring to 555mm to 565-567mm, the diameter of the fourth-stage piston ring to 360mm to 385-387mm, the diameter of the fifth-stage piston ring to 225mm to 235-237mm, and the diameter of the sixth-stage piston ring to 195mm to 198-200 mm;
the diameter of the first-level support ring is changed to 1384-1386mm, the diameter of the second-level support ring is changed to 895-897mm, the diameter of the third-level support ring is changed to 555-565-567 mm, the diameter of the fourth-level support ring is changed to 385-387mm, the diameter of the fifth-level support ring is changed to 235-237mm, and the diameter of the sixth-level support ring is changed to 198-200 mm.
2. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S1, the inner diameter of the primary cylinder is changed from 1400mm to 1384-1386mm by the concentric modification of the traveling fine grinding.
3. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S1, the internal diameter of the secondary cylinder is changed from 900mm to 895-896mm by concentric modification through the traveling fine grinding.
4. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S1, the change of the inner diameter of the tertiary cylinder from 555mm to 565 and 567mm is directly obtained by cylinder replacement.
5. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in the step S1, the change of the inner diameter of the four-stage cylinder from 360mm to 385-387mm is directly obtained by cylinder replacement;
preferably, in step S1, the change of the inner diameter of the five-stage cylinder from 225mm to 235-237mm is directly obtained by cylinder replacement;
preferably, in step S1, the change of the inner diameter of the six-stage cylinder from 195mm to 198-200mm is made by concentric modification by means of row grinding.
6. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S2, the change of the primary piston weight 1170.8kg to 749-751kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 subjected to 500-degree hard oxidation treatment.
7. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S2, the change of the secondary piston weight 1189kg to 419-421kg is made by replacing the existing raw iron casting JT25-47C with aluminum alloy L108 subjected to a hard oxidation treatment of 500 degrees.
8. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S2, the change of the tertiary piston weight 312kg to 209-211kg is carried out by replacing the existing raw iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
9. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S2, the four-stage piston weight 308.6kg is changed to 188-190kg by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
10. The energy-saving modification method for the high-pressure 6M50-312 type nitrogen-hydrogen compressor according to claim 1, wherein the energy-saving modification method comprises the following steps: in step S2, the change of the weight of the five-stage piston from 96.3kg to 47-49kg is carried out by replacing the existing raw material iron castings JT25-47C with aluminum alloy L108 which is subjected to 500-degree hard oxidation treatment.
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