CN208040700U - A kind of two-stage screw compressor - Google Patents
A kind of two-stage screw compressor Download PDFInfo
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- CN208040700U CN208040700U CN201820348104.5U CN201820348104U CN208040700U CN 208040700 U CN208040700 U CN 208040700U CN 201820348104 U CN201820348104 U CN 201820348104U CN 208040700 U CN208040700 U CN 208040700U
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Abstract
The utility model is related to a kind of two-stage screw compressors.Helical-lobe compressor mostly uses greatly conventional flat to putting and the structures such as gear drive, performance are poor.The utility model includes host, its main feature is that：Further include low-pressure stage driving and hiigh pressure stage driving, host includes low-pressure stage shell, hiigh pressure stage shell, low-pressure stage screw rod, channel between grade, hiigh pressure stage screw rod；Low-pressure stage shell is provided with inlet chamber and low-pressure stage exhaust outlet, and low-pressure stage screw rod is mounted in low-pressure stage shell, and low-pressure stage driving is directly connected to low-pressure stage screw rod；Hiigh pressure stage shell is provided with hiigh pressure stage air inlet and high-pressure exhaust, and hiigh pressure stage screw rod is mounted in hiigh pressure stage shell, and hiigh pressure stage driving is directly connected to hiigh pressure stage screw rod；The both ends in channel are separately fixed on low-pressure stage shell and hiigh pressure stage shell between grade, and between grade channel both ends respectively with low-pressure stage exhaust outlet and hiigh pressure stage air inlet unicom, channel is provided with spray-hole between grade.Reasonable in design, the scientific arrangement of the utility model, it is easy to use.
Description
Technical field
The utility model is related to a kind of two-stage screw compressors, belong to Compressor Technology field.
Background technology
Compressor is mainly that industrial production provides original power, including air compressor, technique compressor, cold medium compressor
Deng having application in industrial automation, traffic braking, derived energy chemical, refrigeration air-conditioner etc. field, be that modern industry is essential
Equipment.Compressor consumes mass energy in the process of running, and very big proportion, such as textile industry sky are occupied in industrial energy consumption
Press power consumption cost already takes up 30% or so of industry cost, therefore the innovation and application of compressor high-efficiency energy-saving technology, for
The propulsion of national energy conservation and emission reduction cause and the creation of corporate profit margin are all closely bound up, be one need the work adhered to for a long time and
Mission.
Compressor Technology is classified according to contraction principle, can be divided into screw, piston type, slide sheet type, centrifugal, vortex
Etc., wherein helical-lobe compressor is suitable for 100m3/min displacement ranges, have low noise, efficiency be high, simple in structure, O&M at
This low advantage, is used widely in recent years.
The helical-lobe compressor utility model application since external at first, widely used currently on the market is that single-stage oil spout is double
Helical-lobe compressor, and with attention degree raising of the country to energy conservation in recent years, two-stage screw compressor technology starts to obtain
Using, but be all using conventional flat to putting and the structures such as gear drive, publication date is on February 22nd, 2017, publication number
For in the Chinese patent of CN106460843A, a kind of disclosed two-stage screw compressor；Publication date is on November 23rd, 2016, public
The number of opening is disclosed a kind of novel two stage compressor head in the Chinese patent of CN205714782U.The technology is primarily present at present
Following disadvantage：（1）Motor is horizontal positioned, and the dynamic balancing and requirement on machining accuracy to rotor are high, and there is gravity shadow in the start and stop stage
It rings, is easy to generate scraping with stator case；（2）Gear transmission structure increases mechanical loss, and whole efficiency is caused to decline；（3）
Level design is unfavorable for the utilization in compressor host space.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies existing in the prior art, and provide a kind of structure design conjunction
Reason, scientific arrangement, two-stage screw compressor easy to use can solve the problems, such as that existing two-stage screw compressor exists.
The technical scheme in the invention for solving the above technical problem is：The two-stage screw compressor includes host,
Design feature is：Further include low-pressure stage driving and hiigh pressure stage driving, the host includes low-pressure stage shell, hiigh pressure stage shell,
Low-pressure stage screw rod for carrying out first order compression to gas, for carrying out cooling grade by the compressed gas of the first order
Between channel, and, for gas after cooling carry out second level compression hiigh pressure stage screw rod；The low-pressure stage shell is provided with
Inlet chamber and low-pressure stage exhaust outlet, the low-pressure stage screw rod are mounted in low-pressure stage shell, the low-pressure stage driving and low-pressure stage
Screw rod is directly connected to；The hiigh pressure stage shell is provided with hiigh pressure stage air inlet and high-pressure exhaust, the hiigh pressure stage screw rod installation
In hiigh pressure stage shell, the hiigh pressure stage driving is directly connected to hiigh pressure stage screw rod；The both ends in channel are fixed respectively between the grade
On low-pressure stage shell and hiigh pressure stage shell, and between grade channel both ends respectively with the low-pressure stage exhaust outlet and height of low-pressure stage shell
It arbitrarily downgrades the hiigh pressure stage air inlet unicom of shell, channel is provided between the grade is vented with cooling from low-pressure stage for spray cooling liquid
The spray-hole of the low-pressure gas of mouth discharge.
Preferably, two-stage screw compressor described in the utility model uses vertical structure, the low-pressure stage driving and height
Driving of arbitrarily downgrading is respectively positioned on above host.Driving is vertical to place, if motor is placed vertically, the dynamic balancing to rotor and processing essence
Degree requires low, start and stop stage agravic influence, will not generate scraping with stator case；And it is designed with vertically conducive to compressor host
The utilization in space.
Preferably, low-pressure stage driving described in the utility model and hiigh pressure stage driving are motor or engine.
Preferably, low-pressure stage driving described in the utility model and hiigh pressure stage driving are coupled with host using integral type,
Centre is not provided with the drive mechanisms such as shaft coupling or gear.
A kind of compression method of two-stage screw compressor, feature are：The compression method is as follows：Gas is from inlet chamber
Sucking is discharged, into channel between grade, between grade into low-pressure stage shell by low-pressure stage screw compression from low-pressure stage exhaust outlet
Cooled down in channel, then from hiigh pressure stage air inlet suck, into hiigh pressure stage shell, by hiigh pressure stage screw compression, finally from
High-pressure exhaust is discharged, and realizes gas Two-stage Compression.
Preferably, two-stage screw compressor described in the utility model is used for compressed air, natural gas, freon or bromination
Lithium.
Preferably, the utility model gas passes through low-pressure stage screw compression, after the discharge of low-pressure stage exhaust outlet, passing through
By Oil injection cooling when channel between grade；Cooling oil passes through row's spray-hole jet atomization.
The utility model compared with prior art, has the following advantages and effect：By conventional two-piece driving host connection
Mode is changed to more convenient safe and reliable integral structure, and integrated level is high, simple in structure, convenient for disassembly and assembly；Reduce system to connect
Mouth and external pipeline reduce the risk of air water leakage；Compressor can be used for air compression, can be used for natural gas, freon,
The process gas such as lithium bromide compress；The vertical space utilization being designed with conducive to compressor host；With conventional compression machine host phase
Than the mechanical loss for avoiding shaft coupling and gear drive from bringing.Using Dual-motors Driving, while compressor is integrally using vertical knot
Structure, driving is in upper, host under.
Description of the drawings
Fig. 1 is the main structure diagram of the two-stage screw compressor in the utility model embodiment.
Fig. 2 is the left view structural representation of the two-stage screw compressor in the utility model embodiment.
Fig. 3 is the schematic cross-sectional view in the faces B-B in Fig. 2.
In figure：It is low-pressure stage driving 1, hiigh pressure stage driving 2, host 3, low-pressure stage screw rod 4, hiigh pressure stage screw rod 5, inlet chamber 6, low
It arbitrarily downgrades channel 8 between exhaust outlet 7, grade, hiigh pressure stage air inlet 9, high-pressure exhaust 10, low-pressure stage shell 11, hiigh pressure stage shell 12.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1 to Fig. 3, the two-stage screw compressor in the present embodiment includes host 3, low-pressure stage driving 1 and hiigh pressure stage
Driving 2, the two-stage screw compressor use vertical structure, low-pressure stage driving 1 and hiigh pressure stage driving 2 to be respectively positioned on 3 top of host, i.e.,
Driving is in upper, host 3 under.
Host 3 in the present embodiment includes low-pressure stage shell 11, hiigh pressure stage shell 12, for carrying out first order pressure to gas
The low-pressure stage screw rod 4 of contracting, for channel 8 carrying out cooling grade to the process compressed gas of the first order, and, for cold
But the gas after carries out the hiigh pressure stage screw rod 5 of second level compression.Wherein, low-pressure stage shell 11 is provided with inlet chamber 6 and low-pressure stage
Exhaust outlet 7, low-pressure stage screw rod 4 are mounted in low-pressure stage shell 11, and low-pressure stage driving 1 is directly connected to low-pressure stage screw rod 4, i.e., low
It arbitrarily downgrades and drives 1 and 4 direct connection of low-pressure stage screw rod；Hiigh pressure stage shell 12 is provided with hiigh pressure stage air inlet 9 and high-pressure exhaust 10, high pressure
Grade screw rod 5 is mounted in hiigh pressure stage shell 12, and hiigh pressure stage driving 2 is directly connected to hiigh pressure stage screw rod 5, i.e., hiigh pressure stage driving 2 and
5 direct connection of hiigh pressure stage screw rod.
The both ends in channel 8 are separately fixed on low-pressure stage shell 11 and hiigh pressure stage shell 12 between grade in the present embodiment, and
The both ends hiigh pressure stage air inlet 9 with the low-pressure stage exhaust outlet 7 of low-pressure stage shell 11 and hiigh pressure stage shell 12 respectively in channel 8 between grade
Unicom, channel 8 is provided with for spray cooling liquid with the injection of the cooling low-pressure gas being discharged from low-pressure stage exhaust outlet 7 between grade
Hole.
Low-pressure stage driving 1 and hiigh pressure stage driving 2 in the present embodiment all can be motor or engines.Low-pressure stage driving 1
Coupled using integral type with host 3 with hiigh pressure stage driving 2, i.e., between low-pressure stage driving 1 and host 3 and hiigh pressure stage drives 2
The drive mechanisms such as shaft coupling or gear are not provided between host 3.Compared with conventional compression machine host 3, avoid shaft coupling and
The mechanical loss that gear drive is brought.
The compression method of two-stage screw compressor in the present embodiment is as follows：Gas is sucked from inlet chamber 6, into low-pressure stage
Shell 11, by low-pressure stage screw rod 4 compress, from low-pressure stage exhaust outlet 7 be discharged, into channel 8 between grade, between grade in channel 8 into
Row cooling, then sucked from hiigh pressure stage air inlet 9, into hiigh pressure stage shell 12, compressed by hiigh pressure stage screw rod 5, finally from high pressure
Exhaust outlet 10 is discharged, and realizes gas Two-stage Compression.
Two-stage screw compressor in the present embodiment can be used for compressed air, natural gas, freon or lithium bromide.Gas
It is compressed by low-pressure stage screw rod 4, after the discharge of low-pressure stage exhaust outlet 7, at channel 8 between by grade by Oil injection cooling；Cooling oil
Pass through row's spray-hole jet atomization.
Conventional two-piece driving host connection type is changed to more convenient safe and reliable integral structure, integrated level
It is high, simple in structure, convenient for disassembly and assembly；Reduce system interface and external pipeline, reduces the risk of air water leakage.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Claiming etc. can be different, described in this specification above content is only to the utility model structure example explanation.
The equivalence changes or simple change that all structure, feature and principles according to described in the utility model patent concept are done, are wrapped
It includes in the protection domain of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or substitutes by a similar method, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of two-stage screw compressor, including host, it is characterised in that：Further include low-pressure stage driving and hiigh pressure stage driving, institute
It includes low-pressure stage shell, hiigh pressure stage shell, the low-pressure stage screw rod for carrying out first order compression to gas, for warp to state host
It crosses the compressed gas of the first order and carries out channel between cooling grade, and, for carrying out second level compression to gas after cooling
Hiigh pressure stage screw rod；The low-pressure stage shell is provided with inlet chamber and low-pressure stage exhaust outlet, and the low-pressure stage screw rod is mounted on low
It arbitrarily downgrades in shell, the low-pressure stage driving is directly connected to low-pressure stage screw rod；The hiigh pressure stage shell is provided with hiigh pressure stage air inlet
Mouth and high-pressure exhaust, the hiigh pressure stage screw rod are mounted in hiigh pressure stage shell, and the hiigh pressure stage driving is straight with hiigh pressure stage screw rod
It connects in succession；The both ends in channel are separately fixed on low-pressure stage shell and hiigh pressure stage shell between the grade, and between grade channel both ends
Respectively with the hiigh pressure stage air inlet unicom of the low-pressure stage exhaust outlet of low-pressure stage shell and hiigh pressure stage shell, channel is arranged between the grade
Spray cooling liquid is useful for the spray-hole of the cooling low-pressure gas being discharged from low-pressure stage exhaust outlet.
2. two-stage screw compressor according to claim 1, it is characterised in that：The two-stage screw compressor is using vertical
Structure, the low-pressure stage driving and hiigh pressure stage driving are respectively positioned on above host.
3. two-stage screw compressor according to claim 1, it is characterised in that：The low-pressure stage driving and hiigh pressure stage driving
It is motor or engine.
4. two-stage screw compressor according to claim 1, it is characterised in that：The low-pressure stage driving and hiigh pressure stage driving
Coupled using integral type with host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348104.5U CN208040700U (en) | 2018-03-14 | 2018-03-14 | A kind of two-stage screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348104.5U CN208040700U (en) | 2018-03-14 | 2018-03-14 | A kind of two-stage screw compressor |
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| Publication Number | Publication Date |
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| CN208040700U true CN208040700U (en) | 2018-11-02 |
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| CN201820348104.5U Active CN208040700U (en) | 2018-03-14 | 2018-03-14 | A kind of two-stage screw compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150418A (en) * | 2018-03-14 | 2018-06-12 | 杭州久益机械股份有限公司 | A kind of two-stage screw compressor and compression method |
| CN114738279A (en) * | 2022-03-26 | 2022-07-12 | 上海坤彧节能科技有限公司 | Double-stage compression main machine with interstage cooling device |
-
2018
- 2018-03-14 CN CN201820348104.5U patent/CN208040700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150418A (en) * | 2018-03-14 | 2018-06-12 | 杭州久益机械股份有限公司 | A kind of two-stage screw compressor and compression method |
| CN114738279A (en) * | 2022-03-26 | 2022-07-12 | 上海坤彧节能科技有限公司 | Double-stage compression main machine with interstage cooling device |
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