CN210087572U

CN210087572U - Motor dual-drive 8-row 8-stage high-power piston compressor

Info

Publication number: CN210087572U
Application number: CN201920865017.1U
Authority: CN
Inventors: 金阿文; 杨宝东; 巴晓博; 兴成博; 魏鸿宇; 那正昊
Original assignee: Shenyang Jinbo Gas Compressor Manufacturing Co Ltd
Current assignee: Shenyang Jinbo Gas Compressor Manufacturing Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-02-18
Anticipated expiration: 2029-06-11

Abstract

8 high-power piston compressors of 8 ranks of 8 grades of motor dual drive belong to large-scale coal chemical industry professional equipment technical field, concretely relates to 8 high-power piston compressors of row of 8 grades of motor dual drive. The utility model provides an efficient, the operation is stable, long service life's 8 high-power piston compressors of 8 grades of motor dual drives. The utility model discloses a motor, its characterized in that: the output shafts of the motor are arranged at two ends of the motor, and the two output shafts of the motor are respectively connected with the first crankshaft and the second crankshaft; one end of the first crankshaft, which is close to the motor, is connected with the eight-stage cylinder and the seven-stage cylinder; one end of the first crankshaft, which is far away from the motor, is connected with the primary cylinder; one end of the second crankshaft close to the motor is connected with the four-stage five-stage series cylinder and the six-stage cylinder; one end of the second crankshaft, which is far away from the motor, is connected with the second-stage cylinder and the third-stage cylinder.

Description

Motor dual-drive 8-row 8-stage high-power piston compressor

Technical Field

The utility model belongs to the technical field of large-scale coal chemical industry professional equipment, concretely relates to motor dual drive 8 high-power piston compressor of 8 ranks.

Background

The reciprocating piston compressor for 3-4 ten thousand tons of synthetic ammonia produced by a single machine per year occupies a large market in China, the models are respectively 6M40-190/314\6M50-305/314, the compressors are generally 6-row 6-7-stage compression, the compression is limited by the number of rows and the diameter of a first-stage cylinder, and the maximum limit of 6 rows and the maximum diameter 1390mm of the first-stage cylinder is basically achieved.

The traditional 6-row compressors are all in a motor single-drive structure, a motor rotor is connected with a main engine crankshaft, and a formed multi-mass shaft system has inertia, elasticity and inherent free torsional vibration characteristics. When the excitation frequency generated by the gas force and the inertia force in the working of the compressor is close to the torsional vibration frequency of the shafting, the shafting can generate strong torsional vibration, so that the vibration of a machine body is increased, particularly the abrasion of a bearing bush at the non-driving tail section is accelerated, even the direct fatigue crack of a crankshaft at the non-driving tail section is caused, and the fatigue crack at the crankshaft crank is broken and damaged.

The successful development of the 8MH50 compressor obtains breakthrough in the field, a motor dual-drive mode is adopted, 8 levels and 8 rows are adopted, 1 level is distributed to be a double-cylinder arrangement, 4 and 5 levels are in a double-acting double-cylinder structure in one row, a balance section is not provided, 6 ten thousand tons of synthetic ammonia are produced by a single machine every year, the single machine gas quantity is 490m3/min, the raw material gas is compressed by 8 levels, the exhaust pressure reaches 31.4Mpa, and the large exhaust quantity, the high pressure, the multiple levels and the motor dual drive are the first example of the design of the domestic reciprocating compressor.

Disclosure of Invention

The utility model discloses to above-mentioned problem, provide an efficient, the operation is stable, long service life's 8 high-power piston compressors of 8 ranks of motor dual drives.

In order to realize the above object of the utility model, the utility model discloses a following technical scheme, the utility model discloses a motor, its characterized in that: the output shafts of the motor are arranged at two ends of the motor, and the two output shafts of the motor are respectively connected with the first crankshaft and the second crankshaft; one end of the first crankshaft, which is close to the motor, is connected with the eight-stage cylinder and the seven-stage cylinder; one end of the first crankshaft, which is far away from the motor, is connected with the primary cylinder; one end of the second crankshaft close to the motor is connected with the four-stage five-stage series cylinder and the six-stage cylinder; one end of the second crankshaft, which is far away from the motor, is connected with the second-stage cylinder and the third-stage cylinder.

As an optimized scheme of the utility model, the one-level cylinder sets up to two, sets up respectively in the both sides of bent axle.

As another preferred scheme of the utility model, eight grades of cylinders are lid side single-action structure, and one-level cylinder, second grade cylinder, tertiary cylinder, level four five series connection cylinders, six grades of cylinders and seven grades of cylinders are two effect cylinders.

The utility model has the advantages that: the utility model discloses an every side of motor is 4 compressor units, optimizes overall structure, and rational arrangement changes the natural frequency of shafting, can effectively subduct the torsional vibration of shafting, has alleviateed the problem of beating of bent axle greatly to reduce the vibration and the noise of unit by a wide margin. The dual-drive double-4-row symmetrical balance type structure ensures that first-order inertia force, second-order inertia force and inertia moment are completely balanced and the operation is more stable. The primary cylinder adopts a multi-cylinder structure, so that the possibility of vibration is reduced, the problem that a large-diameter piston is easy to crack is avoided, the specific pressure of a piston supporting ring is reduced, and the service life of a quick-wear part is effectively prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic distribution diagram of the motor and the cylinders of each stage.

In the figure, 1 is a first-stage cylinder, 2 is a second-stage cylinder, 3 is a third-stage cylinder, 45 is a four-stage five-stage series cylinder, 6 is a six-stage cylinder, 7 is a seven-stage cylinder, 8 is an eight-stage cylinder, 9 is a motor, 10 is a first crankshaft, and 11 is a second crankshaft.

Detailed Description

The utility model discloses a motor 9, its characterized in that: the output shafts of the motor 9 are arranged at two ends of the motor 9, and the two output shafts of the motor 9 are respectively connected with a first crankshaft 10 and a second crankshaft 11; one end of the first crankshaft 10 close to the motor 9 is connected with the eight-stage cylinder 8 and the seven-stage cylinder 7; one end of the first crankshaft 10, which is far away from the motor 9, is connected with the primary cylinder 1; one end of the second crankshaft 11 close to the motor 9 is connected with a four-stage five-stage series cylinder 45 and a six-stage cylinder 6; the end of the second crankshaft 11 remote from the motor 9 is connected to the secondary cylinder 2 and the tertiary cylinder 3.

As an optimized scheme of the utility model, one-level cylinder 1 sets up to two, sets up respectively in the both sides of bent axle.

As another preferred scheme of the utility model, eight grades of cylinders 8 and six grades of cylinders 6 are the single-action structure, and one-level cylinder 1, second grade cylinder 2, tertiary cylinder 3, level four five series connection cylinder 45 and seven grades of cylinders 7 are two effect cylinders.

The utility model discloses still be provided with subassemblies such as cooler, separator between the cylinder at different levels, its concrete connection structure is the prior art that technical personnel are familiar with in the field.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. 8 high-power piston compressor of arranging 8 grades of motor dual drive, including motor (9), its characterized in that: the output shafts of the motor (9) are arranged at two ends of the motor (9), and the two output shafts of the motor (9) are respectively connected with a first crankshaft (10) and a second crankshaft (11); one end of the first crankshaft (10) close to the motor (9) is connected with the eight-stage cylinder (8) and the seven-stage cylinder (7); one end of the first crankshaft (10) far away from the motor (9) is connected with the primary cylinder (1); one end of the second crankshaft (11) close to the motor (9) is connected with the four-stage five-stage series cylinder (45) and the six-stage cylinder (6); one end of the second crankshaft (11) far away from the motor (9) is connected with the second-stage cylinder (2) and the third-stage cylinder (3).

2. The motor dual-drive 8-row 8-stage high-power piston compressor according to claim 1, is characterized in that: the two primary cylinders (1) are respectively arranged on two sides of the crankshaft.

3. The motor dual-drive 8-row 8-stage high-power piston compressor according to claim 1, is characterized in that: eight grades of cylinders (8) and six grades of cylinders (6) are the single-action structure, and one-level cylinder (1), second grade cylinder (2), tertiary cylinder (3), level four five series connection cylinder (45) and seven grades of cylinders (7) are two effect cylinders.