CN107905849A - A kind of flat single-screw expander - Google Patents
A kind of flat single-screw expander Download PDFInfo
- Publication number
- CN107905849A CN107905849A CN201711064596.1A CN201711064596A CN107905849A CN 107905849 A CN107905849 A CN 107905849A CN 201711064596 A CN201711064596 A CN 201711064596A CN 107905849 A CN107905849 A CN 107905849A
- Authority
- CN
- China
- Prior art keywords
- rotor
- screw
- expanding machine
- screw shaft
- machine housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C3/00—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
- F01C3/02—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees
- F01C3/025—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A kind of flat single-screw expander, including the expanding machine housing with sealing inner cavity, screw shaft rotor is equipped with the inner cavity of expanding machine housing, screw shaft rotor is made of the screw shaft for offering the rotor of spiral alveolar and being fixedly connected with the rotor, and the screw shaft is pierced by from expanding machine housing and connects the power input equipment of outside；The side of the rotor arranges spider gear shaft, and the star-wheel that can be engaged with rotor teeth groove is provided with spider gear shaft；The both sides of rotor helical-screw alveolar surface form airstream compartment by sealing baffle, offer air entry and exhaust outlet on expanding machine housing, perforate and are connected on sealing baffle by drainage channel with air entry.The present invention need not set air inlet-exhaust valve so that the complete machine processing and installation of expanding machine becomes convenient, reduces vulnerable part, and screw shaft rotor can be intermeshed with multiple star-wheels at the same time, not only add capacity, but also realize the complete equipilibrium of gas force.
Description
Technical field
The present invention relates to a kind of expanding machine, and in particular to a kind of flat single-screw expander.
Background technology
With the development of China's energy strategy, energy-conserving and emission-cutting technology has become the main points and heat of energy field technology development
Point.Low and mid temperature heat recovery by the use of technology as energy-conserving and emission-cutting technology in important one, there is huge development potentiality.Its
In, organic Rankine bottoming cycle is considered as in the most promising system in this field, and positive-displacement expansion engine is then this system
Core component.
Wherein, for single-screw expander compares other positive-displacement expansion engines, there is stress balance, volumetric efficiency is high, makes
The advantages that with long lifespan.But traditional single-screw expander there are admission pressure loss it is big the shortcomings that.
This shortcoming can cause the consequence such as its volumetric efficiency reduction, energy conversion efficiency reduction.
The content of the invention
It is an object of the invention to for above-mentioned the problems of the prior art, there is provided a kind of flat single-screw expander,
Complete machine processing and installation is convenient, and few easy workout part is compact-sized, not only adds capacity, but also realizes the complete equipilibrium of gas force.
To achieve these goals, the technical solution adopted by the present invention is：
Including the expanding machine housing with sealing inner cavity, screw shaft rotor, screw shaft are equipped with the inner cavity of expanding machine housing
Rotor is made of the screw shaft for offering the rotor of spiral alveolar and being fixedly connected with the rotor, and the screw shaft is from expanding machine
Housing is pierced by and connects the power input equipment of outside；The side of the rotor arranges spider gear shaft, and being provided with spider gear shaft can
The star-wheel engaged with rotor teeth groove；The both sides of rotor helical-screw alveolar surface form airstream compartment, expanding machine housing by sealing baffle
On offer air entry and exhaust outlet, perforate and connected on sealing baffle by drainage channel with air entry.
Expanding machine housing is made of upper and lower casing with front, back casing, and screw shaft punched out, rear machine are offered on front housing
The center of shell offers the blind hole for screw shaft positioning, and air entry is opened on front housing, and exhaust outlet is opened in upper and lower casing
On.
The expanding machine housing is cylindrical shape, and front, back casing is round end cap, and exhaust outlet is opened in upper casing top respectively
Face and the center of lower casing bottom surface.
The spider gear shaft has been evenly arranged four in the surrounding of rotor, is offered on front housing mutually centrosymmetric multiple
Air entry.
The upper and lower casing internal is provided with boss, boss fitted seal baffle group airstream compartment in a center of symmetry.
Boss hole is offered on the boss, the both ends of the spider gear shaft can be fixed among boss hole.
By axle center to outer, tooth socket space volume gradually increases the spiral alveolar opened up on the rotor.
Compared with prior art, the present invention has following beneficial effect：The gullet surface and spider gear shaft of screw shaft rotor
On star-wheel intermeshing, rotor helical-screw alveolar surface and sealing baffle form the airstream compartment of closing, with the rotation of rotor, gas
The intracavitary volume of cavity is flowed by the change of generating period, and the spiral alveolar of rotor constantly pushes the work forward fluid motion, so that real
Gas expansion is showed, the present invention need not set air inlet-exhaust valve so that the complete machine processing and installation of expanding machine becomes convenient, reduces
Vulnerable part.Again since screw shaft rotor is plate-like structure, it is easy to the processing and installation of screw rod.In performance, compared to tradition
Single-screw expander by the way of a rotor is engaged with two star-wheels, screw shaft rotor of the invention can at the same time with it is multiple
Star-wheel is intermeshed, this make it that structure is compacter, not only adds capacity, but also realizes the complete equipilibrium of gas force.
Brief description of the drawings
The external structure schematic diagram of Fig. 1 present invention；
The overall structure exploded perspective view of Fig. 2 present invention；
The assembling schematic diagram of Fig. 3 screw shaft rotors of the present invention；
The structure diagram of Fig. 4 screw shaft rotors of the present invention；
In attached drawing：10- screw shaft rotors；11- spider gear shafts；20- upper casings；21- front housings；22- back cabinets；23- boss；
24- sealing baffles；25- drainage channels；26- boss holes；27- lower casings；30- air entries；31- exhaust outlets.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1-4, the present invention includes the expanding machine housing with sealing inner cavity in overall structure, expanding machine housing
It is equipped with screw shaft rotor 10 in inner cavity, screw shaft rotor 10 is by offering the rotor of spiral alveolar and being fixedly connected with the rotor
Screw shaft forms, and screw shaft is pierced by from expanding machine housing and connects the power input equipment of outside.The side arrangement star-wheel of rotor
Axis 11, is provided with the star-wheel that can be engaged with rotor teeth groove on spider gear shaft 11, spider gear shaft 11 has been evenly arranged in the surrounding of rotor
Four, mutual centrosymmetric multiple air entries 30 are offered on front housing 21.The both sides of rotor helical-screw alveolar surface pass through sealing
Baffle 24 forms airstream compartment, offers air entry 30 and exhaust outlet 31 on expanding machine housing, perforate and leads on sealing baffle 24
Drainage channel 25 is crossed with air entry 30 to connect.Expanding machine housing is made of upper and lower casing with front, back casing, and expanding machine housing is
Cylindrical shape, front, back casing are round end cap, and screw shaft punched out is offered on front housing 21, and the center of back cabinet 22 offers
For the blind hole of screw shaft positioning, air entry 30 is opened on front housing 21, and exhaust outlet 31 is opened on upper and lower casing, exhaust
Mouth 31 is opened in the center of upper casing top surface and lower casing bottom surface respectively.Upper and lower casing internal is provided with boss 23, boss 23
The symmetrical airstream compartment of 24 organization center of fitted seal baffle.Boss hole 26, the both ends energy of spider gear shaft 11 are offered on boss 23
Enough it is fixed among boss hole 26.By axle center to outer, tooth socket space volume gradually increases the spiral alveolar opened up on rotor.When defeated
When entering external impetus, screw shaft rotor 10 will drive spider gear shaft 11 to rotate, so that the confined space is at axle center
It is mobile to outside, and be changed with confined space volume size, and then realize the transfer conveying and expansion of working medium.
During the work time, air entry 30 connects external pipe suction working medium to the device, and working medium is flowed through on sealing baffle 24
Drainage channel 25 enter teeth groove in space, when tooth socket space moves to the disconnected with sealing baffle 24, working medium stream enter
Casing internal cavity, and discharged from the exhaust ports for being opened in upper casing 20 and lower casing 27.
By using the symmetrically design concept with tablet so that the processing of compressor becomes convenient with installation so that device
Operation is more steady, efficiently, reaches energy-efficient effect while reducing vulnerable part (such as air-valve assembly).
It should be pointed out that four spider gear shafts 11 are used to be arranged symmetrically with the two-sided processing structure of screw shaft rotor 10 to be of the invention
Preferred embodiment, when using varying number star-wheel or single side rotor structure, also should be regarded as falling into protection scope of the present invention
Within.
Certainly, the above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
It is also considered as falling under the scope of the present invention.
Claims (7)
- A kind of 1. flat single-screw expander, it is characterised in that：Including the expanding machine housing with sealing inner cavity, casing is expanded Screw shaft rotor (10) is equipped with the inner cavity of body, screw shaft rotor (10) is by offering the rotor of spiral alveolar and consolidating with rotor Surely the screw shaft composition connected, the screw shaft are pierced by from expanding machine housing and connect the power input equipment of outside；The side of the rotor arranges spider gear shaft (11), and the star-wheel that can be engaged with rotor teeth groove is provided with spider gear shaft (11)； The both sides of rotor helical-screw alveolar surface form airstream compartment by sealing baffle (24), and air entry (30) is offered on expanding machine housing With exhaust outlet (31), perforate and connected by drainage channel (25) with air entry (30) on sealing baffle (24).
- 2. flat single-screw expander according to claim 1, it is characterised in that：Expanding machine housing by upper and lower casing with Front, back casing forms, and offers screw shaft punched out on front housing (21), the center of back cabinet (22) is offered for screw shaft The blind hole of positioning, air entry (30) are opened on front housing (21), and exhaust outlet (31) is opened on upper and lower casing.
- 3. flat single-screw expander according to claim 2, it is characterised in that：The expanding machine housing is cylinder Shape, front, back casing are round end cap, and exhaust outlet (31) is opened in the center of upper casing top surface and lower casing bottom surface respectively.
- 4. flat single-screw expander according to claim 2, it is characterised in that：The spider gear shaft (11) is in rotor Surrounding has been evenly arranged four, and mutual centrosymmetric multiple air entries (30) are offered on front housing (21).
- 5. flat single-screw expander according to claim 2, it is characterised in that：The upper and lower casing internal is set There are boss (23), the symmetrical airstream compartment of boss (23) fitted seal baffle (24) organization center.
- 6. flat single-screw expander according to claim 5, it is characterised in that：Offered on the boss (23) convex Platform hole (26), the both ends of the spider gear shaft (11) can be fixed among boss hole (26).
- 7. flat single-screw expander according to claim 1, it is characterised in that：The spiral alveolar opened up on the rotor By axle center to outer, tooth socket space volume gradually increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064596.1A CN107905849A (en) | 2017-11-02 | 2017-11-02 | A kind of flat single-screw expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064596.1A CN107905849A (en) | 2017-11-02 | 2017-11-02 | A kind of flat single-screw expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107905849A true CN107905849A (en) | 2018-04-13 |
Family
ID=61842396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064596.1A Pending CN107905849A (en) | 2017-11-02 | 2017-11-02 | A kind of flat single-screw expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107905849A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109065A (en) * | 1985-12-10 | 1986-09-03 | 西安交通大学 | A kind of single screw compression (or expansion) machine that adopts the new meshing pair |
| CN101529096A (en) * | 2006-11-02 | 2009-09-09 | 大金工业株式会社 | Compressor |
| CN101680449A (en) * | 2007-05-14 | 2010-03-24 | 大金工业株式会社 | Single screw compressor |
| CN203867621U (en) * | 2014-05-29 | 2014-10-08 | 扬州大学 | Power adjustable single screw rod expansion machine |
-
2017
- 2017-11-02 CN CN201711064596.1A patent/CN107905849A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109065A (en) * | 1985-12-10 | 1986-09-03 | 西安交通大学 | A kind of single screw compression (or expansion) machine that adopts the new meshing pair |
| CN101529096A (en) * | 2006-11-02 | 2009-09-09 | 大金工业株式会社 | Compressor |
| CN101680449A (en) * | 2007-05-14 | 2010-03-24 | 大金工业株式会社 | Single screw compressor |
| CN203867621U (en) * | 2014-05-29 | 2014-10-08 | 扬州大学 | Power adjustable single screw rod expansion machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |
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| RJ01 | Rejection of invention patent application after publication |