CN219639054U - Double-stage compression split type host of gearless permanent magnet motor - Google Patents
Double-stage compression split type host of gearless permanent magnet motor Download PDFInfo
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- CN219639054U CN219639054U CN202320540128.1U CN202320540128U CN219639054U CN 219639054 U CN219639054 U CN 219639054U CN 202320540128 U CN202320540128 U CN 202320540128U CN 219639054 U CN219639054 U CN 219639054U
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- 238000007906 compression Methods 0.000 title claims abstract description 113
- 230000006835 compression Effects 0.000 title claims abstract description 112
- 238000009434 installation Methods 0.000 claims description 34
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 4
- 238000007789 sealing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a double-stage compression split type host of a gearless permanent magnet motor, which comprises a primary compression host and a secondary compression host; one end of the first male rotor of the primary compression main machine extends to the outside of the main shell, and is detachably connected with the end part of the second male rotor of the secondary compression main machine extending to the outside of the main shell through a coupler. The utility model is of a split type structure, the primary compression host can work independently (low compression ratio), and also can be connected with the secondary compression host through the coupler to form a two-stage screw compression structure (high compression ratio), and the utility model has a plurality of working modes for users to select. And moreover, the primary compression host is an improvement on the basis of the structure of the traditional single-stage screw air compressor, enterprises can use the die which is completely the same as the traditional single-stage screw air compressor to produce and manufacture, the die is not required to be opened again, and the investment cost of first-stage production is effectively reduced.
Description
Technical Field
The utility model relates to a double-stage screw air compressor, in particular to a double-stage compression split type host of a gearless permanent magnet motor.
Background
The compression part of the two-stage screw air compressor consists of two pairs of male and female rotors, and gas enters the two-stage compression after the one-stage compression is finished, and the compression process is divided into two sections, and the inter-stage pressure is set by adopting the equal pressure ratio generally, so that the compression ratio of each stage of the two-stage screw air compressor is much lower than that of the single-stage screw air compressor, the reflux leakage quantity between the rotors is reduced, the volumetric efficiency and the heat insulation efficiency are greatly improved, and the final gas yield is correspondingly improved.
In the prior art, two types of driving modes for a compression part by a driving part (power source) of a two-stage screw air compressor are mainly adopted:
one is through a gear drive. The driving part is a motor, and is combined with the primary compression rotor and the secondary compression rotor of the compression part in a shell, and the power output shaft of the driving part is respectively connected with the primary compression rotor and the secondary compression rotor through helical gears in a direct transmission way. The helical gear used in the driving mode has high precision requirement, and meanwhile, the helical gear also has good material process, so that the manufacturing cost of the two-stage screw air compressor adopting the gear transmission mode is generally higher. Moreover, the double-stage screw air compressor using the gears has the advantages that lubricating oil in the cavity can have life-long influence on the gears, and the gears are easy to pitting and even tooth breakage during long-term variable-speed operation;
and secondly, two independent permanent magnet motors are adopted for direct drive. The driving part is two independent permanent magnet motors, the driving part is combined with the primary compression rotor and the secondary compression rotor of the compression part in a shell, and the male rotor of each stage of compression rotor is embedded in the rotor of one permanent magnet motor and forms an embedded integrated shaft direct connection structure with the permanent magnet motor. In the driving mode, gears can be avoided, but two independent permanent magnet motors are used for respectively and directly driving one group of compression rotors, so that the manufacturing cost is relatively high.
In addition, no matter what kind of concrete structure's doublestage screw air compressor at present, all make up two-stage compression rotor in a casing, compare with traditional single-stage screw air compressor, structure, overall arrangement are through redesigning, therefore just also need to open the mould again when the enterprise produces, lead to first production investment very high, and many small-size enterprises do not possess corresponding condition implementation to the production conversion of doublestage screw air compressor from single-stage screw air compressor.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide the double-stage compression split type host of the gearless permanent magnet motor so as to achieve the aims of reducing the process difficulty and the production cost.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a gearless permanent magnet motor double-stage compression split type host comprises a primary compression host and a secondary compression host;
the primary compression host comprises a main shell, a driving part and a primary compression part, wherein the driving part and the primary compression part are assembled in the main shell; the driving part comprises a motor stator fixed in the main shell and a motor rotor which can be penetrated in the motor stator in a relative rotation manner; the first-stage compression part comprises a first male rotor and a first female rotor which are assembled in the main shell, and the first male rotor is meshed with the first female rotor;
one end of the first male rotor is embedded in the motor rotor, and the other end of the first male rotor extends to the outside of the main shell;
the secondary compression main machine comprises a secondary shell and a secondary compression part assembled in the secondary shell; wherein the secondary compression part comprises a second male rotor and a second female rotor which are assembled in the auxiliary shell, and the second male rotor is meshed with the second female rotor;
one end of the second male rotor extends to the outside of the auxiliary shell and is detachably connected with the end part of the first male rotor extending to the outside of the main shell through a coupler;
the air inlet of the auxiliary shell is detachably communicated with the air outlet of the main shell through a pipeline.
As a limitation of the present utility model, the main housing has a driving part installation space and a first stage compression part installation space, and a first stage air inlet and a first stage air outlet communicating with the first stage compression part installation space; a shaft seal box for separating the two spaces is arranged between the driving part installation space and the first-stage compression part installation space;
one end of the first male rotor extends from the shaft seal box to the installation space of the driving part and is embedded in the motor rotor;
the other end of the first male rotor extends to the outside of the main shell from the installation space of the driving part, and a first shaft seal piece is arranged between the first male rotor and the main shell.
As a further limitation of the present utility model, the sub-housing has a secondary compression portion installation space, and a secondary air inlet and a secondary air outlet communicating with the secondary compression portion installation space;
the secondary air inlet is communicated with the primary air outlet through a pipeline.
As still further defined by the present utility model, the second male rotor extends from the secondary compression portion installation space to an end portion outside the sub-housing, and a second seal is provided between the second male rotor and the sub-housing.
As another limitation of the utility model, the outer housing of the coupling is provided with a protective shell.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts a split layout design, comprises a primary compression host and a secondary compression host which are respectively assembled in different shells, the primary compression host and the male rotor of the secondary compression host are directly connected by adopting a coupler, compared with gear transmission or two independent permanent magnet motors, the coupling direct connection mode has lower cost, simpler structure and more convenient disassembly. The flexible disassembly mode enables the primary compression host to work independently (low compression ratio), and also can be connected with the secondary compression host through the coupler to form a two-stage screw compression structure (high compression ratio), so that the two-stage screw compression structure has multiple working modes for users to select.
The primary compression main machine is an improvement on the basis of the structure of a traditional single-stage screw air compressor, and the improvement point is that one end of the central shaft of the male rotor is prolonged to extend to the outside of the shell for connecting the secondary compression main machine. Therefore, the primary compression host can be manufactured by using the die which is completely the same as that of the traditional single-stage screw air compressor, enterprises do not need to open the die again, the investment cost of first-stage production is effectively reduced, and the enterprises can implement the production transition from the single-stage screw air compressor to the double-stage screw air compressor with minimum investment.
Drawings
The utility model will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of the structural relationship of an embodiment of the present utility model;
in the figure: 1. a primary compression host; 2. a secondary compression host; 3. a coupling; 4. a main housing; 5. a motor stator; 6. a motor rotor; 7. a first male rotor; 8. a first female rotor; 9. a shaft seal box; 10. a sub-housing; 11. a second male rotor; 12. a second female rotor; 13. a pipeline; 14. a first shaft seal; 15. a second seal;
1A, a first-stage air inlet; 1B, a first-level air outlet; 2A, a secondary air inlet; 2B, a secondary air outlet;
c1, a driving part installation space; c2, a first-stage compression part installation space; and C3, installing the secondary compression part.
Detailed Description
Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are presented for purposes of illustration and understanding only, and are not intended to limit the utility model.
Embodiment double-stage compression split type host machine of gearless permanent magnet motor
As shown in fig. 1, the present embodiment is a split structure, including a primary compression host 1 and a secondary compression host 2.
The primary compression host 1 includes a main casing 4, a driving portion, and a primary compression portion. As shown in fig. 2, the main casing 4 has a driving portion installation space C1 and a primary compression portion installation space C2, and a primary air inlet 1A and a primary air outlet 1B communicating with the primary compression portion installation space C2. Further, a shaft seal box 9 for completely partitioning the two spaces is provided between the drive unit installation space C1 and the first-stage compression unit installation space C2 of the main casing 4.
The driving part is a power source of the present embodiment, is provided in the driving part installation space C1 of the main casing 4, and includes a motor stator 5 fixed on the inner side wall of the main casing 4 and a motor rotor 6 relatively rotatably penetrating in the motor stator 5.
The primary compression portion is provided in the primary compression portion installation space C2 of the main casing 4 for compressing the gas discharged from the primary gas inlet 1A and discharging the compressed gas from the primary gas outlet 1B. The primary compression portion includes a first male rotor 7 and a first female rotor 8 rotatably provided in the main casing 4, and the first male rotor 7 and the first female rotor 8 are engaged.
Further, as shown in fig. 2, one end of the first male rotor 7 passes through the shaft seal box 9 to extend into the driving part installation space C1, and is embedded in the motor rotor 6, so as to form an embedded integral shaft direct connection structure with the motor rotor 6; the other end of the first male rotor 7 extends from the drive portion installation space C1 to the outside of the main casing 4, and a first shaft seal 14 is provided between the shaft section of the first male rotor 7 and the main casing 4.
The secondary compression main unit 2 includes a secondary casing 10 and a secondary compression unit. As shown in fig. 2, the sub-housing 10 has a secondary compression portion installation space C3, and a secondary air inlet 2A and a secondary air outlet 2B communicating with the secondary compression portion installation space C3. In operation, a detachable pipeline 13 is arranged between the secondary air inlet 2A and the primary air outlet 1B to form a communication structure.
The secondary compression portion is provided in the secondary compression portion space of the sub-housing 10 for compressing the gas discharged from the secondary gas inlet 2A and discharging the compressed gas from the secondary gas outlet 2B. The secondary compression portion includes a second male rotor 11 and a second female rotor 12 rotatably provided in the sub-housing 10, and the second male rotor 11 and the second female rotor 12 are engaged. Further, one end of the second male rotor 11 extends from the secondary compression portion installation space C3 to the outside of the sub-housing 10, and a second seal 15 is provided between the shaft section of the second male rotor 11 and the sub-housing 10.
More specifically, as shown in fig. 2, the end of the first male rotor 7 extending outside the main housing 4 is detachably connected with the end of the second male rotor 11 extending outside the sub-housing 10 through the coupling 3, so that the transmission of power from the first male rotor 7 to the second male rotor 11 is realized through the coupling 3. In order to improve the safety performance of the present embodiment, a protective housing (not shown in the figure) is further covered on the outer side of the coupling 3.
When the secondary compression mode is operated in this embodiment, the primary compression host 1 and the secondary compression host 2 work synchronously, after the gas is compressed by the primary compression host 1, the gas is discharged from the primary gas outlet 1B, then enters the secondary compression host 2 through the secondary gas inlet 2A via the pipeline 13 to perform secondary compression, and finally is discharged to the oil cylinder via the secondary gas outlet 2B to perform subsequent processes such as oil-gas separation.
In this embodiment, when the first stage compression mode is operated, the coupling 3 is removed to disconnect the first male rotor 7 from the second male rotor 11, and at the same time, the pipe 13 between the first stage air outlet 1B and the second stage air inlet 2A is removed to directly connect the first stage air outlet 1B to the oil cylinder. When the device works, only the primary compression host 1 works, and after the gas is compressed by the primary compression host 1, the gas is discharged to the oil cylinder through the primary gas outlet 1B to perform subsequent procedures such as oil-gas separation.
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but the present utility model is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides a gearless permanent magnet motor doublestage compression split type host computer which characterized in that: the system comprises a primary compression host and a secondary compression host;
the primary compression host comprises a main shell, a driving part and a primary compression part, wherein the driving part and the primary compression part are assembled in the main shell; the driving part comprises a motor stator fixed in the main shell and a motor rotor which can be penetrated in the motor stator in a relative rotation manner; the first-stage compression part comprises a first male rotor and a first female rotor which are assembled in the main shell, and the first male rotor is meshed with the first female rotor;
one end of the first male rotor is embedded in the motor rotor, and the other end of the first male rotor extends to the outside of the main shell;
the secondary compression main machine comprises a secondary shell and a secondary compression part assembled in the secondary shell; wherein the secondary compression part comprises a second male rotor and a second female rotor which are assembled in the auxiliary shell, and the second male rotor is meshed with the second female rotor;
one end of the second male rotor extends to the outside of the auxiliary shell and is detachably connected with the end part of the first male rotor extending to the outside of the main shell through a coupler;
the air inlet of the auxiliary shell is detachably communicated with the air outlet of the main shell through a pipeline.
2. The gearless permanent magnet motor dual stage compression split host of claim 1, wherein: the main shell is provided with a driving part installation space, a first-stage compression part installation space, a first-stage air inlet and a first-stage air outlet, wherein the first-stage air inlet and the first-stage air outlet are communicated with the first-stage compression part installation space; a shaft seal box for separating the two spaces is arranged between the driving part installation space and the first-stage compression part installation space;
one end of the first male rotor extends from the shaft seal box to the installation space of the driving part and is embedded in the motor rotor;
the other end of the first male rotor extends to the outside of the main shell from the installation space of the driving part, and a first shaft seal piece is arranged between the first male rotor and the main shell.
3. The gearless permanent magnet motor dual stage compression split host of claim 2, wherein: the auxiliary shell is provided with a secondary compression part installation space, a secondary air inlet and a secondary air outlet which are communicated with the secondary compression part installation space;
the secondary air inlet is communicated with the primary air outlet through a pipeline.
4. The gearless permanent magnet motor dual stage compression split host of claim 3, wherein: the second male rotor extends from the installation space of the secondary compression part to the end part outside the auxiliary shell, and a second sealing piece is arranged between the second male rotor and the auxiliary shell.
5. The gearless permanent magnet motor dual stage compression split host of any of claims 1-4, wherein: the outer side of the coupler is covered with a protective shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320540128.1U CN219639054U (en) | 2023-03-20 | 2023-03-20 | Double-stage compression split type host of gearless permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320540128.1U CN219639054U (en) | 2023-03-20 | 2023-03-20 | Double-stage compression split type host of gearless permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219639054U true CN219639054U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320540128.1U Active CN219639054U (en) | 2023-03-20 | 2023-03-20 | Double-stage compression split type host of gearless permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219639054U (en) |
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2023
- 2023-03-20 CN CN202320540128.1U patent/CN219639054U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Tongyue Electromechanical Equipment Co.,Ltd. Assignor: Hebei Tongsen Precision Machinery Co.,Ltd. Contract record no.: X2023980043670 Denomination of utility model: Gearless permanent magnet motor dual stage compression split type host Granted publication date: 20230905 License type: Common License Record date: 20231017 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHIJIAZHUANG TONGAN MACHINERY Co.,Ltd. Assignor: Hebei Tongsen Precision Machinery Co.,Ltd. Contract record no.: X2023980046255 Denomination of utility model: Gearless permanent magnet motor dual stage compression split type host Granted publication date: 20230905 License type: Common License Record date: 20231107 |
|
| EE01 | Entry into force of recordation of patent licensing contract |