CN204024716U - A kind of twin-screw expander - Google Patents
A kind of twin-screw expander Download PDFInfo
- Publication number
- CN204024716U CN204024716U CN201420370961.7U CN201420370961U CN204024716U CN 204024716 U CN204024716 U CN 204024716U CN 201420370961 U CN201420370961 U CN 201420370961U CN 204024716 U CN204024716 U CN 204024716U
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- CN
- China
- Prior art keywords
- screw
- housing
- root
- gas
- screw rod
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- Expired - Fee Related
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a kind of twin-screw expander in decompressor field, comprise the housing that two ends are closed through end cap, be equipped with two screw rods be coupled in housing, same one end of the screw axis of described two screw rods is stretched out outside corresponding end cap, and its external part connects through synchronous gear transport; One end of housing is provided with import, and the other end of housing is provided with outlet; The overall tapered setting of described screw root, the root footpath being positioned at the screw rod of entrance point is less than the root footpath of outlet end screw rod.In the utility model, screw root is taper, and high voltage terminal gas is in the process expanded, and gas pressure lowers gradually, and cavity volume Cross section Design becomes gradually large form can utilize the compression energy of gas better, and gives vent to anger more reposefully.It can replace throttle valve and be used widely in heat supply.
Description
Technical field
The utility model relates to a kind of decompressor, particularly a kind of twin-screw expander.
Background technique
In prior art, have a kind of twin-screw expander, its structure mainly comprises the housing that two ends are closed through end cap, is equipped with two screw rods be coupled in housing, one end of described two screw rods is stretched out outside corresponding end cap, and its external part connects through synchronous gear transport; One end of housing is provided with import, and the other end of housing is provided with outlet.Twin-screw expander working principle is a kind of mechanical device of the reverse use of double-screw compressor, the gas with pressure of high voltage terminal can discharge to low voltage terminal by it, throttle valve can be replaced, in remaining (giving up) heat power of solar energy, geothermal power and industry utilizes, screw expander also has very large application potential.Its deficiency is: the screw rod of existing decompressor, and the internal diameter of its screw rod is consistent with external diameter, makes, and gas exists larger pressure drop in outlet port, and it is poor that gas exports stationarity, and gas energy loss is large, is unfavorable for energy-conservation.
Model utility content
The purpose of this utility model is to provide a kind of twin-screw expander, and gas can steadily be given vent to anger at low voltage terminal, and the energy of gas can obtain Appropriate application simultaneously.
The purpose of this utility model is achieved in that a kind of twin-screw expander, comprise the housing that two ends are closed through end cap, be equipped with two screw rods be coupled in housing, same one end of the screw axis of described two screw rods is stretched out outside corresponding end cap, and its external part connects through synchronous gear transport; One end of housing is provided with import, and the other end of housing is provided with outlet; The overall tapered setting of described screw root, the root footpath being positioned at the screw rod of entrance point is less than the root footpath of outlet end screw rod.
During utility model works, the gas that pressure is relatively high enters from import, along with the rotation of screw rod, form closed cavity volume between screw rod and problem, gas is closed in closed cavity volume, and screw rod is rotated further, the gas closed constantly is pushed to outlet, because screw root is tapered, the space of cavity volume constantly becomes large, and the pressure of gas reduces, at gas from import to the process of exit movement, the pressure of gas constantly reduces, and therefore, it can be given vent to anger more reposefully at outlet end.Gas in inflation process, gas expansion for doing work.The maximum difference part of the design and existing design is that the cavity volume sectional area that the design's negative and positive screw rotor and housing are formed reduces gradually.Its beneficial effect is that gas is in the process expanded, and gas pressure lowers gradually, cavity volume cross section be designed to the compression energy that gradually large form can utilize gas better, and to give vent to anger more reposefully.It can replace throttle valve and be used widely in heat supply.
As further improvement of the utility model, described two screw rods comprise the positive screw rod and female screw that are coupled, and positive screw flight is outstanding arc, and the screw thread of female screw is the arc of depression.Good by the line of contact of female screw and positive screw rod, the bearing capacity of positive screw rod is high, and power inputs by positive screw rod, and its use is more reliable.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the meshing relation figure of female screw and positive screw rod.
Wherein, 1 left end cap, 2 positive screw rods, 3 housings, 4 right end caps, 5 synchromesh gears, 6 imports, 7 female screws, 8 outlets.
Embodiment
As shown in the figure, for a kind of twin-screw expander, comprise housing 3, housing 3 left end is provided with left end cap 1, and housing 3 right-hand member is provided with right end cap 4, and housing 3 is closed into closed chamber with right end cap 4 by left end cap 1, two screw rods be coupled are equipped with in housing 3, two screw rods are supported on left end cap 1 and right end cap 4 through bearing rotationally, and same one end of the screw axis of two screw rods is stretched out outside right end cap 4, and its external part is in transmission connection through synchromesh gear 5; One end of housing 3 is provided with import 6, and the other end of housing 3 is provided with outlet 8; The overall tapered setting of screw root, the root footpath being positioned at the screw rod of import 6 end is less than the root footpath of outlet 8 end screw rod.Two screw rods be coupled, one is positive screw rod 2, and another root is female screw 7, and the screw thread of positive screw rod 2 is outstanding arc, and the screw thread of female screw 7 is the arc of depression.Power is inputted by the axle head of positive screw rod 2.
During work, gas enters from import 6, screw rod phase reverse rotation, by gas confinement in adjacent you and the space between line and housing 3, along with bolt rotary, gas is pushed to outlet 8 end gradually, in whole process, its body volume constantly expands, and pressure constantly reduces, and makes pressure drop steady, exhaust is stable, its volumetric expansion work done, auxiliary pushing and bolt rotary, reduce energy consumption during bolt rotary.
The utility model is not limited to above-described embodiment; on the basis of technological scheme disclosed in the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristicss wherein to replace and distortion, these are replaced and are out of shape all in protection domain of the present utility model.
Claims (2)
1. a twin-screw expander, comprise the housing that two ends are closed through end cap, be equipped with two screw rods be coupled in housing, same one end of the screw axis of described two screw rods is stretched out outside corresponding end cap, and its external part connects through synchronous gear transport; One end of housing is provided with import, and the other end of housing is provided with outlet; It is characterized in that: the overall tapered setting of described screw root, the root footpath being positioned at the screw rod of entrance point is less than the root footpath of outlet end screw rod.
2. a kind of twin-screw expander according to claim 1, is characterized in that: described two screw rods comprise the positive screw rod and female screw that are coupled, and positive screw flight is outstanding arc, and the screw thread of female screw is the arc of depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370961.7U CN204024716U (en) | 2014-07-07 | 2014-07-07 | A kind of twin-screw expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370961.7U CN204024716U (en) | 2014-07-07 | 2014-07-07 | A kind of twin-screw expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024716U true CN204024716U (en) | 2014-12-17 |
Family
ID=52064600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370961.7U Expired - Fee Related CN204024716U (en) | 2014-07-07 | 2014-07-07 | A kind of twin-screw expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401925A (en) * | 2015-11-30 | 2016-03-16 | 中国石油天然气股份有限公司 | Shaft-bottom throttling device and shaft-bottom throttling method of gas store |
-
2014
- 2014-07-07 CN CN201420370961.7U patent/CN204024716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401925A (en) * | 2015-11-30 | 2016-03-16 | 中国石油天然气股份有限公司 | Shaft-bottom throttling device and shaft-bottom throttling method of gas store |
| CN105401925B (en) * | 2015-11-30 | 2018-05-04 | 中国石油天然气股份有限公司 | Gas storage well bottom throttling arrangement and throttling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170707 |