CN217632925U

CN217632925U - Integrated horizontal two-stage screw compressor

Info

Publication number: CN217632925U
Application number: CN202221201817.1U
Authority: CN
Inventors: 张旭云; 胡凌; 邬剑波
Original assignee: Ningbo Baosi Energy Equipment Co Ltd
Current assignee: Ningbo Baosi Energy Equipment Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-10-21
Anticipated expiration: 2032-05-19

Abstract

The utility model provides an integrated horizontal two-stage screw compressor, which comprises a primary compression main machine, a secondary compression main machine, an interstage connecting body and a motor; the primary compression main engine comprises a primary cylinder, a primary male rotor and a primary female rotor which are arranged in the primary cylinder, and the primary compression main engine and the secondary compression main engine are cascaded through an interstage connector; the motor comprises a motor shell, and a motor rotor and a motor stator are arranged in the motor shell; an air inlet end cover is arranged at the air inlet end of the primary air cylinder, and the air inlet end cover and the motor shell are of an integrated structure; the air inlet end of the first-stage male rotor or the first-stage female rotor is provided with a first-stage compression main engine output shaft which is arranged on the air inlet end cover and extends into the motor shell to drive the motor rotor to rotate. The utility model discloses saved tang location connection structure between motor and the one-level compression host computer, solved electric motor rotor, motor stator and the one-level compression host computer concentricity problem between going out the axle simultaneously.

Description

Horizontal doublestage helical-lobe compressor of integral type

Technical Field

The utility model relates to a doublestage screw compressor's technical field more exactly relates to a horizontal doublestage screw compressor of integral type.

Background

In traditional horizontal doublestage helical-lobe compressor of integral type, one-level compression host computer and motor are independent equipment separately, and on the one hand, casing between them relies on the tang location of the two, and on the other hand, one-level compression host computer play axle and electric motor rotor are fixed a position in addition, rethread screw fastening connection compressor and motor after the dual location. The method not only requires that the matching surface between the primary compression main machine and the motor has high processing precision and assembly precision, but also has high anti-vibration requirement on the whole machine equipment, and avoids the problem that the matching surface between the primary compression main machine and the motor is displaced due to vibration in the running process of the whole machine equipment to influence the concentricity between a rotor and a stator in the motor. If the matching between the primary compression main engine and the motor has errors, friction and rubbing are easy to occur between a rotor and a stator of the motor when the all-in-one machine runs, and even a shaft breaking accident occurs on an output shaft of the primary compression main engine.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a horizontal doublestage screw compressor of integral type, need not assemble the casing of one-level compression host computer and motor and just can solve the concentricity problem between rotor and the stator in the motor, reduce the processing and the assembly degree of difficulty of equipment.

The technical solution of the utility model is to provide an integrated horizontal two-stage screw compressor, which comprises a primary compression main machine, a secondary compression main machine, an interstage connecting body and a motor; the primary compression main machine comprises a primary cylinder, a primary male rotor and a primary female rotor which are arranged in the primary cylinder, the secondary compression main machine comprises a secondary cylinder, a secondary male rotor and a secondary female rotor which are arranged in the secondary cylinder, and the primary compression main machine and the secondary compression main machine are cascaded through an interstage connector; the motor comprises a motor shell, and a motor rotor and a motor stator are arranged in the motor shell; an air inlet end cover is arranged at the air inlet end of the primary air cylinder, and the air inlet end cover and the motor shell are of an integrated structure; the air inlet end of the first-stage male rotor or the first-stage female rotor is provided with a first-stage compression main engine output shaft which is arranged on the air inlet end cover and extends into the motor shell to drive the motor rotor to rotate.

Compared with the prior art, the utility model discloses a horizontal doublestage helical-lobe compressor of integral type has following advantage: the air inlet end cover and the motor shell are of an integrated structure, the air inlet end of the first-level male rotor or the first-level female rotor is provided with a first-level compression host output shaft, the first-level compression host output shaft is installed on the air inlet end cover and extends into the motor shell to drive the motor rotor to rotate, when the motor is adopted to drive the first-level compression host to rotate, a spigot positioning connection structure between the motor and the first-level compression host is omitted, the equipment processing difficulty and the assembly difficulty are reduced, the whole equipment structure is more compact, the noise-reducing and shock-absorbing effect is achieved, the motor rotor is reduced, the concentricity problem between the motor stator and the first-level compression host output shaft is solved, the air gap between the motor stator and the motor rotor is more uniform, and the working performance is more stable.

Preferably, the exhaust end of the first-stage cylinder is provided with a first-stage exhaust seat, the first-stage exhaust seat is the interstage connector, and the exhaust ends of the first-stage male rotor and the first-stage female rotor are both arranged on the first-stage exhaust seat; the first-stage exhaust seat is arranged at the air inlet end of the second-stage cylinder, and the air inlet ends of the second-stage male rotor and the second-stage female rotor are also arranged on the first-stage exhaust seat; the first-stage male rotor and the second-stage male rotor are in transmission connection in the first-stage exhaust seat. By adopting the structure, the primary exhaust seat is adopted to cascade the primary compression main engine and the secondary compression main engine, the equipment structure is simplified, and the assembly steps are reduced.

Preferably, the primary exhaust seat is detachably arranged at the exhaust end of the primary cylinder; the air inlet end cover can be detachably arranged at the air inlet end of the first-stage air cylinder, or the air inlet end cover and the first-stage air cylinder are of an integrated structure. By adopting the structure, the first-stage male rotor and the first-stage female rotor in the first-stage cylinder can be conveniently assembled, the air inlet ends of the first-stage male rotor and the first-stage female rotor and the air inlet end cover can be assembled, and then the first-stage exhaust seat is assembled at the exhaust end of the first-stage cylinder.

Preferably, the primary exhaust seat and the primary cylinder are of an integrated structure; the air inlet end cover is detachably arranged at the air inlet end of the primary air cylinder. By adopting the structure, the first-stage male rotor and the first-stage female rotor in the first-stage cylinder can be conveniently assembled, and the air inlet end cover can be assembled at the air inlet end of the first-stage cylinder after the air outlet ends of the first-stage male rotor and the first-stage female rotor and the first-stage air outlet seat are assembled.

Preferably, the exhaust end of the secondary cylinder is provided with a secondary exhaust seat, and the secondary exhaust seat is provided with an exhaust port and a detachable exhaust seat end cover; the second-stage exhaust seat is detachably connected with the second-stage cylinder; the first-stage exhaust seat and the second-stage cylinder are detachably connected or are of an integrated structure. By adopting the structure, the second-stage male rotor and the second-stage female rotor in the second-stage cylinder can be conveniently assembled, the second-stage exhaust seat can be assembled at the exhaust end of the second-stage cylinder after the air inlet ends of the second-stage male rotor and the second-stage female rotor and the first-stage exhaust seat are assembled, and the exhaust seat end cover is assembled on the second-stage exhaust seat after the exhaust ends of the second-stage male rotor and the second-stage female rotor are also assembled.

Preferably, the exhaust end of the secondary cylinder is provided with a secondary exhaust seat, and the secondary exhaust seat is provided with an exhaust port and a detachable exhaust seat end cover; the secondary exhaust seat and the secondary cylinder are of an integrated structure; the first-stage exhaust seat is detachably connected with the second-stage cylinder. By adopting the structure, the secondary male rotor and the secondary female rotor in the secondary cylinder can be conveniently assembled, the exhaust end of the secondary male rotor and the exhaust end of the secondary female rotor can be assembled with the secondary exhaust seat, the primary exhaust seat is assembled at the air inlet end of the secondary cylinder, and the exhaust seat end cover is assembled on the secondary exhaust seat after the air inlet end of the secondary male rotor and the air inlet end of the secondary female rotor are also assembled and adjusted.

Preferably, the end of the motor housing is provided with a detachable motor cover. By adopting the structure, the output shaft of the primary compression main machine and the motor rotor are conveniently assembled, and the assembly between the motor cover and the motor shell can be carried out after the assembly of the output shaft of the primary compression main machine and the motor rotor is completed.

Preferably, the air inlet end cover is provided with a shaft mounting opening for mounting the output shaft of the primary compressor, a sealing end cover is arranged on one side of the motor shell on the air inlet end cover, and the sealing end cover is used for sealing a gap between the output shaft of the primary compressor and the shaft mounting opening. By adopting the structure, the installation of the sealing end cover is convenient, and the lubricating oil for lubricating the bearing on the output shaft of the primary compression main machine can be prevented from leaking to the inside of the motor along the shaft.

Preferably, a sealing ring is arranged between the sealing end cover and the output shaft of the primary compression main machine. By adopting the structure, the sealing ring further improves the effect of sealing the gap between the output shaft and the shaft mounting port of the primary compression main machine, and ensures that lubricating oil cannot leak to the inside of the motor along the shaft.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the integrated horizontal two-stage screw compressor of the present invention.

As shown in the figure: 1. the compressor comprises a primary compressor, 1-1 primary cylinder, 1-2 primary male rotor, 1-3 primary female rotor, 1-4 primary compressor output shaft, 2 motor shell, 3 secondary exhaust seat, 3-1 exhaust port, 3-2 exhaust seat end cover, 4 sealing ring, 5 sealing end cover, 6 motor rotor, 7 motor stator, 8 motor cover, 9 air inlet end cover, 10 secondary compressor, 10-1 secondary cylinder, 10-2 secondary male rotor, 10-3 secondary female rotor, 11 primary exhaust seat.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Further, when a representation such as "… at least one" appears after the list of listed features, the entire listed feature is modified rather than modifying an individual element in the list.

Example 1:

as shown in fig. 1, the utility model discloses a horizontal doublestage helical-lobe compressor of integral type, including one-level compression host computer 1, second grade compression host computer 10, interstage connector and motor.

The primary compression main machine 1 comprises a primary cylinder 1-1, and a primary male rotor 1-2 and a primary female rotor 1-3 which are arranged in the primary cylinder 1-1, wherein an air inlet end cover 9 is arranged at an air inlet end of the primary cylinder 1-1, a primary exhaust seat 11 is arranged at an exhaust end of the primary cylinder 1-1, one side of the primary exhaust seat 11 is connected with an exhaust end of the primary cylinder 1-1, the air inlet end and the exhaust end of the primary male rotor 1-2 are respectively arranged on the air inlet end cover 9 and the primary exhaust seat 11 through bearings, and the air inlet end and the exhaust end of the primary female rotor 1-3 are respectively arranged on the air inlet end cover 9 and the primary exhaust seat 11 through bearings. An air inlet channel is arranged on the side portion of the air inlet end cover 9, an air inlet is arranged on the air inlet end cover 9, the air inlet is located at one end of the air inlet channel and is communicated with an inner cavity of the primary air cylinder 1-1, and the other end of the air inlet channel is communicated with the external environment of the primary air cylinder 1-1.

The secondary compression main machine 10 comprises a secondary cylinder 10-1, and a secondary male rotor 10-2 and a secondary female rotor 10-3 which are arranged in the secondary cylinder 10-1, the other side of the primary exhaust seat 11 is arranged at the air inlet end of the secondary cylinder 10-1, the air outlet end of the secondary cylinder 10-1 is provided with a secondary exhaust seat 3, the side part of the secondary exhaust seat 3 is provided with an air outlet 3-1, the end part of the secondary exhaust seat 3 is provided with a detachable exhaust seat end cover 3-2, the air inlet end and the air outlet end of the secondary male rotor 10-2 are respectively arranged on the primary exhaust seat 11 and the secondary exhaust seat 3 through bearings, and the air inlet end and the air outlet end of the secondary female rotor 10-3 are also respectively arranged on the primary exhaust seat 11 and the secondary exhaust seat 3 through bearings.

The first-stage exhaust seat 11 is the interstage connector, and the first-stage male rotor 1-2 and the second-stage male rotor 10-2 are in meshing transmission in the first-stage exhaust seat 11 through a gear set, so that the cascade connection of the first-stage compression main engine 1 and the second-stage compression main engine 10 is realized.

The motor comprises a motor shell 2, an air inlet end cover 9 and the motor shell 2 are of an integrated structure, and a motor rotor 6 and a motor stator 7 are arranged in the motor shell 2; the air inlet end of the first-stage male rotor 1-2 is provided with a first-stage compression main engine output shaft 1-4, the air inlet end cover 9 is provided with a shaft mounting opening for mounting the first-stage compression main engine output shaft 1-4, the shaft mounting opening is adjacent to the air inlet, the first-stage compression main engine output shaft 1-4 is mounted in the shaft mounting opening of the air inlet end cover 9 and extends into the motor shell 2 to be in transmission connection with the motor rotor 6, and the motor rotor 6 is driven to rotate. The end of the motor housing 2 is provided with a detachable motor cover 8.

A bearing is arranged on one side of the air inlet end cover 9 on the first-stage compression main machine output shaft 1-4, a shaft sleeve is further in interference fit with the outer side of the first-stage compression main machine output shaft 1-4, and one end of the shaft sleeve on the first-stage compression main machine output shaft 1-4 is abutted to the inner ring of the bearing on the first-stage compression main machine output shaft 1-4; a sealing end cover 5 is arranged on one side of the motor shell 2 on the air inlet end cover 9, the sealing end cover 5 is arranged on the outer side of a shaft sleeve on the output shaft 1-4 of the primary compressor, a sealing ring 4 is arranged between the sealing end cover 5 and the shaft sleeve on the output shaft 1-4 of the primary compressor, the sealing ring 4 is in interference fit between the sealing end cover 5 and the shaft sleeve on the output shaft 1-4 of the primary compressor, a gap between the shaft sleeve on the output shaft 1-4 of the primary compressor and a shaft mounting opening is sealed, and lubricating oil for lubricating a bearing on the output shaft 1-4 of the primary compressor is prevented from leaking into the motor shell along the shaft.

In this embodiment, the first-stage exhaust seat 11 and the air inlet end cover 9 are detachably connected with the first-stage air cylinder 1-1, and when the first-stage male rotor 1-2 and the first-stage female rotor 1-3 are assembled, any one end of the first-stage male rotor 1-2 and any one end of the first-stage female rotor 1-3 can be assembled first, and then the other end is assembled. For example, the air inlet end cover 9 can be firstly installed on the primary cylinder 1-1, then the air inlet ends of the primary male rotor 1-2 and the primary female rotor 1-3 are assembled, the air outlet ends of the primary male rotor 1-2 and the primary female rotor 1-3 are assembled, and the primary air outlet seat 11 is installed on the primary cylinder 1-1. In this embodiment, the air inlet end cover 9 may also be integrally cast with the primary cylinder 1-1.

The first-stage exhaust seat 11 and the second-stage exhaust seat 3 are detachably connected with the second-stage cylinder 10-1, and when the second-stage male rotor 10-2 and the second-stage female rotor 10-3 are assembled, any one end of the second-stage male rotor 10-2 and any one end of the second-stage female rotor 10-3 can be assembled first, and then the other end of the second-stage male rotor 10-2 and the other end of the second-stage female rotor 10-3 are assembled. For example, the first stage discharge port 11 may be mounted on the second stage cylinder 10-1, the inlet ends of the second stage male rotor 10-2 and the second stage female rotor 10-3 may be assembled, the discharge ends of the second stage male rotor 10-2 and the second stage female rotor 10-3 may be assembled, and the second stage discharge port 3 may be mounted on the second stage cylinder 10-1. In this embodiment, the primary exhaust seat 11 may also be integrally cast with the secondary cylinder 10-1.

The utility model discloses a horizontal doublestage screw compressor of integral type, because inlet end cover 9 and motor housing 2 are the integral type structure, the one-level compression host that the inlet end of one-level male rotor 1-2 set up goes out axle 1-4 and installs on inlet end cover 9 and stretch into motor housing 2 interior driving motor rotor 6 and rotate, when adopting motor drive one-level compression host moving, the tang location connection structure between motor and the one-level compression host has been saved, both reduced the equipment processing degree of difficulty and the assembly degree of difficulty, make equipment overall structure compacter, reach the absorbing effect of making an uproar to fall, motor rotor has been solved simultaneously, motor stator and one-level compression host go out the concentricity problem between axle 1-4, make the air gap between motor stator and the motor rotor more even, the working property is also more stable.

Example 2:

the difference between the integrated horizontal two-stage screw compressor of the embodiment and the embodiment 1 is that the first-stage exhaust seat 11 and the first-stage cylinder 1-1 are of an integrated structure, and the air inlet end cover 9 is detachably connected with the first-stage cylinder 1-1. When the first-stage male rotor 1-2 and the first-stage female rotor 1-3 are assembled, the exhaust ends of the first-stage male rotor 1-2 and the first-stage female rotor 1-3 are assembled, then the air inlet ends of the first-stage male rotor 1-2 and the first-stage female rotor 1-3 are assembled, and the air inlet end cover 9 is installed on the first-stage air cylinder 1-1.

Example 3:

the integrated horizontal two-stage screw compressor of the embodiment is different from the embodiment 1 in that the two-stage exhaust seat 3 and the two-stage cylinder 10-1 are of an integrated structure; the first-stage exhaust seat 11 is detachably connected with the second-stage cylinder 10-1. When the second-stage male rotor 10-2 and the second-stage female rotor 10-3 are assembled, the exhaust ends of the second-stage male rotor 10-2 and the second-stage female rotor 10-3 are assembled, then the air inlet ends of the second-stage male rotor 10-2 and the second-stage female rotor 10-3 are assembled, and the first-stage exhaust seat 11 is installed on the second-stage air cylinder 10-1.

The above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. An integrated horizontal two-stage screw compressor comprises a primary compression main machine (1), a secondary compression main machine (10), an interstage connector and a motor; the primary compression main machine (1) comprises a primary cylinder (1-1), a primary male rotor (1-2) and a primary female rotor (1-3) which are arranged in the primary cylinder (1-1), the secondary compression main machine (10) comprises a secondary cylinder (10-1), a secondary male rotor (10-2) and a secondary female rotor (10-3) which are arranged in the secondary cylinder (10-1), and the primary compression main machine (1) and the secondary compression main machine (10) are cascaded through an interstage connector; the motor comprises a motor shell (2), and a motor rotor (6) and a motor stator (7) are arranged in the motor shell (2); the air inlet end cover is characterized in that an air inlet end cover (9) is arranged at the air inlet end of the primary air cylinder (1-1), and the air inlet end cover (9) and the motor shell (2) are of an integrated structure; the air inlet end of the first-stage male rotor (1-2) or the first-stage female rotor (1-3) is provided with a first-stage compression main machine output shaft (1-4), and the first-stage compression main machine output shaft (1-4) is installed on an air inlet end cover (9) and extends into the motor shell (2) to drive the motor rotor (6) to rotate.

2. The integrated horizontal two-stage screw compressor according to claim 1, wherein the exhaust end of the first stage cylinder (1-1) is provided with a first stage exhaust seat (11), the first stage exhaust seat (11) is the interstage connection body, and the exhaust ends of the first stage male rotor (1-2) and the first stage female rotor (1-3) are both arranged on the first stage exhaust seat (11); the primary exhaust seat (11) is arranged at the air inlet end of the secondary cylinder (10-1), and the air inlet ends of the secondary male rotor (10-2) and the secondary female rotor (10-3) are also arranged on the primary exhaust seat (11); the first-stage male rotor (1-2) is in transmission connection with the second-stage male rotor (10-2) in the first-stage exhaust seat (11).

3. The integrated horizontal two-stage screw compressor according to claim 2, characterized in that the first stage exhaust seat (11) is detachably arranged at the exhaust end of the first stage cylinder (1-1); the air inlet end cover (9) is detachably arranged at the air inlet end of the primary air cylinder (1-1), or the air inlet end cover (9) and the primary air cylinder (1-1) are of an integrated structure.

4. The integrated horizontal two-stage screw compressor according to claim 2, characterized in that the one-stage exhaust seat (11) and the one-stage cylinder (1-1) are of an integrated structure; the air inlet end cover (9) is detachably arranged at the air inlet end of the first-stage cylinder (1-1).

5. The integrated horizontal two-stage screw compressor according to claim 3 or 4, wherein the exhaust end of the second-stage cylinder (10-1) is provided with a second-stage exhaust seat (3), and the second-stage exhaust seat (3) is provided with an exhaust port (3-1) and a detachable exhaust seat end cover (3-2); the secondary exhaust seat (3) is detachably connected with the secondary cylinder (10-1); the primary exhaust seat (11) and the secondary cylinder (10-1) are detachably connected or are of an integrated structure.

6. The integrated horizontal two-stage screw compressor according to claim 3 or 4, wherein the exhaust end of the second-stage cylinder (10-1) is provided with a second-stage exhaust seat (3), and the second-stage exhaust seat (3) is provided with an exhaust port (3-1) and a detachable exhaust seat end cover (3-2); the secondary exhaust seat (3) and the secondary cylinder (10-1) are of an integrated structure; the primary exhaust seat (11) is detachably connected with the secondary cylinder (10-1).

7. The two-stage, horizontal, integrated screw compressor according to claim 1, characterised in that the end of the motor casing (2) is provided with a removable motor cover (8).

8. The integrated horizontal two-stage screw compressor according to claim 1, wherein the inlet end cover (9) is provided with a shaft mounting opening for mounting the outlet shaft (1-4) of the primary compression main machine, the inlet end cover (9) is provided with a sealing end cover (5) at one side of the motor housing (2), and the sealing end cover (5) is used for closing a gap between the outlet shaft (1-4) of the primary compression main machine and the shaft mounting opening.

9. The integrated horizontal two-stage screw compressor according to claim 8, wherein a sealing ring (4) is arranged between the sealing end cover (5) and the output shaft (1-4) of the first-stage compression main machine.