12-stage ultrahigh-pressure centrifugal compressor

Abstract

The utility model discloses a 12-stage ultrahigh-pressure centrifugal compressor which is characterized by mainly comprising a gear box, a first low-speed gear assembly, a second low-speed gear assembly, a first high-speed shaft assembly, a second high-speed shaft assembly, a third high-speed shaft assembly, a fourth high-speed shaft assembly, a fifth high-speed shaft assembly and a sixth high-speed shaft assembly. The first high-speed shaft assembly, the first-stage impeller and the second-stage impeller form a first high-speed shaft rotor assembly. The second high-speed shaft assembly, the third-stage impeller and the fourth-stage impeller form a second high-speed shaft rotor assembly; the high-speed shaft assembly III, the fifth-stage impeller and the sixth-stage impeller form a high-speed shaft rotor assembly III; the high-speed shaft assembly IV, the seventh-stage impeller and the eighth-stage impeller form a high-speed shaft rotor assembly IV; the high-speed shaft assembly V, the ninth-stage impeller and the tenth-stage impeller form a high-speed shaft rotor assembly V; the high-speed shaft rotor assembly has the advantages that the overall structure is compact, multiple gear transmission ratios are achieved, and different ultrahigh pressure requirements can be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fluid machinery, concretely relates to a 12-stage superhigh pressure centrifugal compressor. BACKGROUND

[0002] The existing high pressure centrifugal compressor all adopts three-stage or four-stage at present, and six-stage or ten-stage is adopted for superhigh pressure, but the 12-stage superhigh pressure has not appeared at present. The gas of certain pressure is usually compressed by four-stage in prior art, but four-stage compression cannot meet the high pressure gas in some fields, and has certain limitation. SUMMARY

[0003] The utility model solves the technical problem that a 12-stage superhigh pressure centrifugal compressor with compact overall structure and multiple gear transmission ratios can realize different superhigh pressure requirements.

[0004] The utility model adopts the technical scheme that a 12-stage superhigh pressure centrifugal compressor mainly comprises a gear box, a low-speed gear assembly one, a low-speed gear assembly two, a high-speed shaft assembly one, a high-speed shaft assembly two, a high-speed shaft assembly three, a high-speed shaft assembly four, a high-speed shaft assembly five and a high-speed shaft assembly six, the high-speed shaft assembly one, a primary impeller and a secondary impeller constitute a high-speed shaft rotor assembly one, the high-speed shaft assembly two, a tertiary impeller and a quaternary impeller constitute a high-speed shaft rotor assembly two, the high-speed shaft assembly three, a quinary impeller and a sextuple impeller constitute a high-speed shaft rotor assembly three, the high-speed shaft assembly four, a septuple impeller and an octuple impeller constitute a high-speed shaft rotor assembly four, the high-speed shaft assembly five, a nonuple impeller and a decuple impeller constitute a high-speed shaft rotor assembly five, and the high-speed shaft assembly six, an undecuple impeller and a duodecimal impeller constitute a high-speed shaft rotor assembly six.

[0005] The gear box is internally provided with a driving end motor, the driving end motor drives the low speed gear assembly one to rotate through a diaphragm coupling, the low speed gear assembly one drives the high speed shaft assembly one, the high speed shaft assembly two and the low speed gear assembly two to rotate through gear transmission respectively, the high speed shaft assembly one drives the first stage impeller and the second stage impeller to rotate respectively, the high speed shaft assembly two drives the third stage impeller and the fourth stage impeller to rotate respectively, the low speed gear assembly two drives the high speed shaft assembly three, the high speed shaft assembly four, the high speed shaft assembly five, the high speed shaft assembly six to rotate respectively, the high speed shaft assembly three drives the fifth stage impeller and the sixth stage impeller to rotate simultaneously, the high speed shaft assembly four drives the seventh stage impeller and the eighth stage impeller to rotate simultaneously, the high speed shaft assembly five drives the ninth stage impeller and the tenth stage impeller to rotate simultaneously, and the high speed shaft assembly six drives the eleventh stage impeller and the twelfth stage impeller to rotate simultaneously.

[0006] Further, interstage tube heat exchangers are arranged between adjacent two stage impellers and are sealedly connected with each other.

[0007] Compared with the prior art, the 12-stage superhigh pressure centrifugal compressor has the advantages that the 12-stage superhigh pressure centrifugal compressor mainly comprises a gear box, two sets of low speed gear assemblies and six sets of high speed shaft assemblies, the driving end motor drives two low speed rotor systems and six high speed rotor systems to rotate at different gear ratios, superhigh pressure gas is obtained through the pressurization of the stage impellers, and the 12-stage superhigh pressure centrifugal compressor is formed. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a 12-stage superhigh pressure centrifugal compressor of the utility model Figure One ;

[0009] Figure 2 is a 12-stage superhigh pressure centrifugal compressor of the utility model Figure Two ;

[0010] The various signs in the drawing are as follows: 1-gear box, 2-high speed shaft assembly one, 3-high speed shaft assembly three, 4-high speed shaft assembly five, 5-high speed shaft assembly six, 6-high speed shaft assembly four, 7-high speed shaft assembly two, 8-low speed gear assembly two, 9-low speed gear assembly one. DETAILED DESCRIPTION

[0011] The utility model will be further described in detail in combination with the embodiment of the drawing. DETAILED EMBODIMENT

[0012] A 12-stage ultra-high pressure centrifugal compressor, such as Figure 1 and Figure 2 As shown, the core of the compressor mainly consists of a gearbox 1, two sets of low-speed gear assemblies, and six sets of high-speed shaft assemblies; the two sets of low-speed gear assemblies are low-speed gear assembly one 9 and low-speed gear assembly two 8; the six sets of high-speed shaft assemblies are high-speed shaft assembly one 2, high-speed shaft assembly two 7, high-speed shaft assembly three 3, high-speed shaft assembly four 6, high-speed shaft assembly five 4 and high-speed shaft assembly six 5;

[0013] High-speed shaft assembly 1, consisting of impeller 2, first-stage impeller, and second-stage impeller, constitutes high-speed shaft rotor assembly 1; high-speed shaft assembly 2, consisting of impeller 7, third-stage impeller, and fourth-stage impeller, constitutes high-speed shaft rotor assembly 2; high-speed shaft assembly 3, consisting of impeller 3, fifth-stage impeller, and sixth-stage impeller, constitutes high-speed shaft rotor assembly 3; high-speed shaft assembly 4, consisting of impeller 6, seventh-stage impeller, and eighth-stage impeller, constitutes high-speed shaft rotor assembly 4; high-speed shaft assembly 5, consisting of impeller 4, ninth-stage impeller, and tenth-stage impeller, constitutes high-speed shaft rotor assembly 5; high-speed shaft assembly 6, consisting of impeller 5, eleventh-stage impeller, and twelfth-stage impeller, constitutes high-speed shaft rotor assembly 6.

[0014] The gearbox 1 is equipped with a drive motor, which drives the low-speed gear assembly 9 to rotate via a diaphragm coupling. The low-speed gear assembly 9 drives the high-speed shaft assembly 2, the high-speed shaft assembly 7, and the low-speed gear assembly 8 to rotate via gear transmission. The high-speed shaft assembly 2 drives the first-stage and second-stage impellers to rotate. At the same time, the high-speed shaft assembly 7 drives the third-stage and fourth-stage impellers to rotate. The rotation of the low-speed gear assembly 8 drives the high-speed shaft assembly 3, the high-speed shaft assembly 4, the high-speed shaft assembly 5, and the high-speed shaft assembly 6 to rotate. The rotation of the high-speed shaft assembly 3 drives the fifth-stage and sixth-stage impellers to rotate. The rotation of the high-speed shaft assembly 4 drives the seventh-stage and eighth-stage impellers to rotate. The rotation of the high-speed shaft assembly 5 drives the ninth-stage and tenth-stage impellers to rotate. The rotation of the high-speed shaft assembly 6 drives the eleventh-stage and twelfth-stage impellers to rotate. An interstage tube heat exchanger is installed between adjacent impellers.

[0015] Its working process is as follows: Gas is pressurized by the first-stage impeller and enters the second-stage impeller through the interstage tube heat exchanger; gas is pressurized by the second-stage impeller and enters the third-stage impeller through the interstage tube heat exchanger; gas is pressurized by the third-stage impeller and enters the fourth-stage impeller through the interstage tube heat exchanger; gas is pressurized by the fourth-stage impeller and enters the fifth-stage impeller through the interstage tube heat exchanger; gas is pressurized by the fifth-stage impeller and enters the sixth-stage impeller through the interstage tube heat exchanger; gas is pressurized by the sixth-stage impeller and enters the sixth-stage impeller through the interstage tube heat exchanger. The compressor consists of seven impellers. Gas is pressurized and rotated through the seventh impeller, then passes through an interstage tube heat exchanger to the eighth impeller, the eighth impeller, the ninth impeller, the tenth impeller, the eleventh impeller, and the twelfth impeller. Finally, the gas is pressurized and rotated through the twelfth impeller before entering the downstream end-use gas stage. This process, using each impeller stage to pressurize the gas to ultra-high pressure, creates a 12-stage ultra-high pressure centrifugal compressor. Each intermediate stage employs a highly efficient sealing technology: the outlet gas from the next stage is guided through a pressure pipe to the comb-tooth seal of the previous stage, thus achieving a sealing effect.

[0016] The above description is not intended to limit the present invention, nor is the present invention limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A 12-stage ultra-high pressure centrifugal compressor, characterized in that: It mainly consists of a gearbox, low-speed gear assembly one, low-speed gear assembly two, high-speed shaft assembly one, high-speed shaft assembly two, high-speed shaft assembly three, high-speed shaft assembly four, high-speed shaft assembly five, and high-speed shaft assembly six. High-speed shaft assembly one, its first-stage impeller, and its second-stage impeller constitute high-speed shaft rotor assembly one; high-speed shaft assembly two, its third-stage impeller, and its fourth-stage impeller constitute high-speed shaft rotor assembly two; high-speed shaft assembly three, its fifth-stage impeller, and its sixth-stage impeller constitute high-speed shaft rotor assembly three; high-speed shaft assembly four, its seventh-stage impeller, and its eighth-stage impeller constitute high-speed shaft rotor assembly four; high-speed shaft assembly five, its ninth-stage impeller, and its tenth-stage impeller constitute high-speed shaft rotor assembly five; and high-speed shaft assembly six, its eleventh-stage impeller, and its twelfth-stage impeller constitute high-speed shaft rotor assembly six. The gearbox is equipped with a drive motor, which drives the low-speed gear assembly one to rotate via a diaphragm coupling. The low-speed gear assembly one drives the high-speed shaft assembly one, the high-speed shaft assembly two, and the low-speed gear assembly two to rotate via gear transmission. The high-speed shaft assembly one drives the first-stage impeller and the second-stage impeller to rotate. The high-speed shaft assembly two drives the third-stage impeller and the fourth-stage impeller to rotate. The low-speed gear assembly two drives the high-speed shaft assembly three, four, five, and six to rotate. The rotation of the high-speed shaft assembly three simultaneously drives the fifth-stage impeller and the sixth-stage impeller to rotate. The rotation of the high-speed shaft assembly four simultaneously drives the seventh-stage impeller and the eighth-stage impeller to rotate. The rotation of the high-speed shaft assembly five simultaneously drives the ninth-stage impeller and the tenth-stage impeller to rotate. The rotation of the high-speed shaft assembly six simultaneously drives the eleventh-stage impeller and the twelfth-stage impeller to rotate.

2. The 12-stage ultra-high pressure centrifugal compressor according to claim 1, characterized in that: An interstage tube heat exchanger is installed between two adjacent impellers and they are sealed together.

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