CN206221011U - A kind of turbo-expander spiral case for being easy to manufacture - Google Patents
A kind of turbo-expander spiral case for being easy to manufacture Download PDFInfo
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- CN206221011U CN206221011U CN201621194734.9U CN201621194734U CN206221011U CN 206221011 U CN206221011 U CN 206221011U CN 201621194734 U CN201621194734 U CN 201621194734U CN 206221011 U CN206221011 U CN 206221011U
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- spiral case
- shell body
- easy
- inner housing
- turbo
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Abstract
The cylindrical inner shell being coaxially disposed the utility model discloses a kind of turbo-expander spiral case be easy to and manufacture, the cylindrical housing body and shell body that the spiral case is connected including admission line with admission line and the cover plate for closing the shell body and inner housing；Described shell body, inner housing and cover plate surround the guide channel of conveying and distributing gas.The all parts of spiral case of the present utility model are separate structural member, and by welding fabrication, the remodeling spiral case good appearance for obtaining, simple structure, weight substantially mitigates, while being easy to manufacture, the easy control of quality significantly reduces cost.
Description
Technical field
The utility model belongs to art of refrigeration units, and in particular to a kind of turbo-expander spiral case for being easy to manufacture.
Background technology
Turbo-expander is a kind of for field institutes such as air separation, natural gas (oil gas) liquefaction separation and low-temperature grindings
Required refrigeration plant, its cardinal principle is to carry out the external acting of adiabatic expansion using the gas for having certain pressure and consume gas
The interior energy of itself, so that gas itself is consumingly cooled down and reaches the purpose of refrigeration.
Turbo-expander is typically made up of expanding machine flow passage component, brake and the part of body three.Wherein, expanding machine leads to
Stream part is the key component for obtaining low temperature, it include for air inlet and make spiral case that air-flow evenly distributes, inside spiral case
Make nozzle that gas carries out preliminary expansion, the active wheel rotated under the promotion of expanding gas and gas is further dropped
The diffuser of pressure.
The spiral case of existing expanding machine is monoblock cast part, and physical dimension is larger, and weight weight, the process-cycle is long, is easily occurred
Casting flaw, considerably increases casting cost, while monoblock cast part safeguards inconvenient.
Utility model content
The utility model provides a kind of turbo-expander spiral case be easy to and manufacture, the volute structure letter of the turbo-expander
It is single, it is easy to manufacture and safeguards.
A kind of turbo-expander spiral case for being easy to manufacture, the spiral case includes what admission line was connected with admission line
The cylindrical inner shell that cylindrical housing body and shell body are coaxially disposed and the lid for closing the shell body and inner housing
Plate；
Described shell body, inner housing and cover plate surround the guide channel of conveying and distributing gas.
In the utility model, by shell body, inner housing and cover plate, these independent forging are constituted spiral case, each forging
Simple structure, can individually machine-shaping, be finally assembled into spiral case, whole process is more prone to, improve manufacture effect
Rate and success rate, and weight is lighter, reduces cost；Additionally, each single forging is separately machined, lacking occurs in certain forging
Fall into, can easily be replaced.
Preferably, described cover plate is connected by the way of welding with described inner housing and shell body, using welding
Mode it is simple to operate, technology maturation.
In the utility model, described admission line is L-type, including the air inlet section of axis parallel to shell body and vertical
In the linkage section of the axis of shell body, using the structure total can be made compacter, reduce installation volume.
In the utility model after being improved spiral case, in order that gas is evenly distributed, the inside to spiral case is entered
Further improvement is gone, preferably, described shell body is provided with multiple the first prerotation vanes for stretching into guide channel.As
Further preferred, the length that the first described prerotation vane stretches into guide channel is the 1/3 of the difference of shell body and inner housing radius
~/1/2.
Preferably, described inner housing is provided with multiple the second prerotation vanes for stretching into guide channel, described second leads
It is interspersed with the first prerotation vane to piece；As further preferably, the first described prerotation vane stretches into the length of guide channel
For shell body and the difference of inner housing radius 1/3~/1/2.
Compared with the existing technology, the beneficial effects of the utility model are embodied in：It is improved by spiral case form, will be whole
Body cast member is changed to independent structural member, then welding fabrication, and the remodeling spiral case good appearance for obtaining, simple structure, weight is bright
Aobvious to mitigate, while being easy to manufacture, the easy control of quality, the process-cycle is shorter；Meanwhile, it is oriented to by being set in guide pipeline
Piece, improves the uniformity and efficiency of air flow method.
Brief description of the drawings
Fig. 1 is the front view of the spiral case of the turbo-expander of prior art；
Fig. 2 is the rearview of the spiral case shown in Fig. 1；
Fig. 3 is the top view of the spiral case shown in Fig. 1；
Fig. 4 is the left view of the spiral case of turbo-expander of the present utility model；
Fig. 5 is the A-A faces sectional view of the spiral case shown in Fig. 4；
Fig. 6 is the right view of the spiral case shown in Fig. 4；In figure, 1：Shell body；2：Admission line；3：Cover plate；4：Inner housing.
Specific embodiment
Turbo-expander spiral case of the present utility model is further described below in conjunction with the accompanying drawings.
The turbo-expander of prior art is main by spiral case, nozzle ring, rotor, exhaust diffuser, bearing housing, sealing system
With brakes composition, the structural representation of the spiral case shown in Fig. 1~Fig. 3, the spiral case be single piece, physical dimension compared with
Greatly, weight weight.Difficulty of processing is big, casting flaw easily occurs, once there is defect, whole spiral case can be caused to scrap, and increased
Casting cost；And spiral case has damage, it is necessary to whole replacement, considerably increases maintenance cost during use.
Turbo-expander of the present utility model is also mainly by spiral case, nozzle ring, rotor, exhaust diffuser, bearing housing, sealing
System and brakes are constituted, and in addition to spiral case, other parts are substantially same as the prior art.
The structural representation of the spiral case part shown in Fig. 4~Fig. 6, the spiral case in present embodiment is by several only
Vertical forging is constituted, and mainly includes 1, columnar inner housing 4 of a columnar shell body, and closure body 1
With the cover plate 3 on the left side of inner housing 4, these three parts constitute guide channel, wherein, shell body 1 and inner housing 4 are coaxially disposed, lid
Plate 3 is shaped as circular ring structure, and the breach at its center forms the outlet of diffuser.
It is separate between these parts, in production process, first these three parts are cast out to come respectively, then weld
As an entirety, it is not easy to produce defect, cost is greatly lowered, and follow-up maintenance also more facilitates.
An air inlet is provided with shell body 1, the air inlet is communicated with admission line 2, and working medium is logical from the admission line 2
Enter inside spiral case, the admission line 2 is L-type structure, including one vertical parallel to the air inlet section of the axis of shell body 1 and one
In the linkage section of shell body 1, it is arranged using this kind of mode, can further reduces the volume of spiral case so that is installed more
It is convenient.
After new structure of the present utility model, the weight of spiral case is lighter, therefore, the fixed spiral shell for fixing spiral case
The quantity of bolt can also be reduced to a certain extent.
The turbo-expander spiral case for being easy to manufacture according to claim 1, it is characterised in that described shell body 1
It is provided with multiple the first prerotation vanes for stretching into guide channel.
After the global shape to spiral case is transformed, small influence may be produced to the distribution of air-flow, be
Ensure or further improve the uniformity of gas distribution, certain prerotation vane can be set inside guide channel.
The prerotation vane set on shell body 1 is the first prerotation vane, and the prerotation vane set on inner housing 4 is oriented to for second
The quantity of piece, the first prerotation vane and the second prerotation vane can be multigroup, and its respective length is about shell body 1 and inner housing 4
The 1/2 of the difference of radius, both are interspersed, and can so make air flow method more uniform.During reality processing, can first cast outer
Housing 1 and inner housing 4, are then respectively welded prerotation vane, then weld upper cover plate 3, simple to operate.
Above-described specific embodiment has been described in detail to the technical solution of the utility model and beneficial effect,
It should be understood that the foregoing is only most preferred embodiment of the present utility model, the utility model is not limited to, it is all at this
Any modification, supplement and equivalent made in the spirit of utility model etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (7)
1. it is a kind of be easy to manufacture turbo-expander spiral case, it is characterised in that the spiral case include admission line (2) and air inlet
Cylindrical inner shell (4) that the cylindrical housing body (1) and shell body (1) that pipeline (2) is connected are coaxially disposed and for sealing
Close the cover plate (3) of the shell body (1) and inner housing (4)；
Described shell body (1), inner housing (4) and cover plate (3) surround the guide channel of conveying and distributing gas.
2. it is according to claim 1 be easy to manufacture turbo-expander spiral case, it is characterised in that described cover plate (3) is adopted
It is connected with described inner housing (4) and shell body (1) with the mode of welding.
3. it is according to claim 1 be easy to manufacture turbo-expander spiral case, it is characterised in that described admission line
(2) be L-type, including parallel to shell body (1) axis air inlet section and the linkage section of axis perpendicular to shell body (1).
4. it is according to claim 1 be easy to manufacture turbo-expander spiral case, it is characterised in that described shell body (1)
It is provided with multiple the first prerotation vanes for stretching into guide channel.
5. it is according to claim 4 be easy to manufacture turbo-expander spiral case, it is characterised in that the first described prerotation vane
Stretch into the length of guide channel for shell body (1) and the difference of inner housing (4) radius 1/3~/1/2.
6. according to claim 4 or 5 be easy to manufacture turbo-expander spiral case, it is characterised in that described inner housing
(4) multiple the second prerotation vanes for stretching into guide channel are provided with, the second described prerotation vane is interspersed with the first prerotation vane.
7. it is according to claim 6 be easy to manufacture turbo-expander spiral case, it is characterised in that the first described prerotation vane
Stretch into the length of guide channel for shell body (1) and the difference of inner housing (4) radius 1/3~/1/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194734.9U CN206221011U (en) | 2016-11-04 | 2016-11-04 | A kind of turbo-expander spiral case for being easy to manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194734.9U CN206221011U (en) | 2016-11-04 | 2016-11-04 | A kind of turbo-expander spiral case for being easy to manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206221011U true CN206221011U (en) | 2017-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621194734.9U Active CN206221011U (en) | 2016-11-04 | 2016-11-04 | A kind of turbo-expander spiral case for being easy to manufacture |
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| CN (1) | CN206221011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404067A (en) * | 2018-12-17 | 2019-03-01 | 杭州杭氧膨胀机有限公司 | A kind of turbo-expander spiral case |
| CN111140360A (en) * | 2019-11-27 | 2020-05-12 | 西安航天动力研究所 | Gas turbine guide pipe and forming method thereof |
-
2016
- 2016-11-04 CN CN201621194734.9U patent/CN206221011U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404067A (en) * | 2018-12-17 | 2019-03-01 | 杭州杭氧膨胀机有限公司 | A kind of turbo-expander spiral case |
| CN109404067B (en) * | 2018-12-17 | 2024-03-12 | 杭州杭氧膨胀机有限公司 | Turbine expander spiral case |
| CN111140360A (en) * | 2019-11-27 | 2020-05-12 | 西安航天动力研究所 | Gas turbine guide pipe and forming method thereof |
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