CN201865909U - Twin-screw liquid pump - Google Patents
Twin-screw liquid pump Download PDFInfo
- Publication number
- CN201865909U CN201865909U CN2010206124486U CN201020612448U CN201865909U CN 201865909 U CN201865909 U CN 201865909U CN 2010206124486 U CN2010206124486 U CN 2010206124486U CN 201020612448 U CN201020612448 U CN 201020612448U CN 201865909 U CN201865909 U CN 201865909U
- Authority
- CN
- China
- Prior art keywords
- rotor
- cavity
- twin
- motor
- screw
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a twin-screw liquid pump, which can be used for an organic Rankine cycle, and comprises a semi-closed or full-closed shell, wherein the shell comprises a first cavity and a second cavity which are mutually isolated, and a motor is arranged in the first cavity; a main body part of a twin-screw is arranged in the second cavity, and at least one rotor of the twin-screw is fixedly connected with a motor rotor; the twin-screw is driven by the motor to rotate, and a liquid refrigerant spray inlet and a refrigerant outlet are arranged in the first cavity; and the motor is cooled through the evaporation of the liquid refrigerant, and a liquid inlet and a liquid outlet are arranged in the second cavity. In the twin-screw liquid pump for the organic Rankine cycle disclosed by the utility model, since the resistance moment of a female rotor is very small, the liquid pump can not be worn when the viscosity of liquid is very low, and the reliability is good, and thus the power generation efficiency of the organic Rankine cycle can be improved. In addition, the semi-closed or full-closed shell can effectively prevent the leakage of the refrigerant.
Description
Technical field
The utility model belongs to organic Rankine circulating technology field, relates to a kind of organic Rankine cycle generating system, relates in particular to the twin-screw liquid pump of above-mentioned organic Rankine cycle generating system.
Background technique
See also Fig. 1, Fig. 1 is that (Organic Rankin Cycle ORC), comprises decompressor 1 ', generator 2 ', vaporizer 3 ', liquid pump 4 ', condenser 5 ' in a typical organic Rankine circulation.
The liquid refrigerating working medium of low-temp low-pressure is boosted in liquid pump 4 '; Enter vaporizer 3 ' then and be heated vaporization, after becoming overheated gas (High Temperature High Pressure), enter decompressor 1 ' expansion acting, drive generator 2 ' generating.Low-temp low-pressure gas after the acting enters condenser 5 ' and is cooled and condenses into liquid; Return in the liquid pump 4 ', finish a circulation.
Existing liquid pump mostly is the gear pump or the centrifugal pump of opening type.The defective of gear pump is: gear drive another one gear always in the gear pump, the merit of consumption have half to consume in the driving process; Simultaneously, in the ORC circulation, the viscosity of liquid is lower usually, and gear is easy to wear.The defective of centrifugal pump is: after centrifugal pump sucked liquid, pressure reduced in the suction process, and liquid is easily vaporized, and caused the efficient of centrifugal pump to reduce; Thereby influence whole ORC circuit efficient.The defective of the liquid pump of opening type is that working medium is revealed by the axle envelope easily.
The model utility content
Technical problem to be solved in the utility model is: provide a kind of twin-screw liquid pump, because the female rotor resistance can not wear and tear good reliability apart from very little yet when fluid viscosity is very low.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of twin-screw liquid pump, described twin-screw liquid pump comprise the housing of half envelope or full envelope, and housing comprises first cavity, second cavity of mutual isolation; In described first cavity motor is set, the main body of twin-screw is set in second cavity; At least one rotor of described twin-screw is fixedlyed connected with motor rotor, and twin-screw rotates by the drive of motor; Described first cavity is provided with liquid refrigeration working medium entrance, refrigeration working medium outlet, by the evaporative cooling motor of liquid refrigeration working medium; Described second cavity is provided with liquid inlet, liquid outlet.
As a kind of preferred version of the present utility model, described twin-screw comprises male rotor, female rotor; First end of described male rotor is fixedlyed connected with described motor rotor.
As a kind of preferred version of the present utility model, described male rotor comprises rotor portion, the attachment portion of integrated design; Shown in rotor portion be arranged in second cavity, cooperate with female rotor; The motor interior in first cavity is stretched in described attachment portion; Described first cavity, second cavity separate by an interrupter, and make and form a hole between the cavity of winning, second cavity; Described attachment portion is passed in this hole to the first cavity, fixedlys connected with motor rotor away from an end of rotor portion in the attachment portion.
As a kind of preferred version of the present utility model, described male rotor is provided with the first male rotor bearing away from second end of motor; The two ends of described female rotor are provided with the female rotor bearing respectively.
As a kind of preferred version of the present utility model, described attachment portion is provided with the second male rotor bearing between the rotor portion of male rotor and motor rotor.
As a kind of preferred version of the present utility model, the described attachment portion and the second male rotor bearing seal by the axle envelope near the motor rotor end.
As a kind of preferred version of the present utility model, described motor is the motor of adjustable frequency motor or fixed rotating speed.
The beneficial effects of the utility model are: what the utility model proposes is used for organic Rankine circuit twin-screw liquid pump, and liquid pump is not because the female rotor resistance apart from very little, can wear and tear good reliability yet when fluid viscosity is very low; Thereby can improve organic Rankine circuit generating efficiency.In addition, the housing of half envelope or full envelope can prevent the leakage of working medium effectively.
Description of drawings
Fig. 1 is the composition schematic representation of organic Rankine cycle generating system.
Fig. 2 is for using the composition schematic representation of organic Rankine cycle generating system of the present utility model.
Fig. 3 is the sectional view of the utility model twin-screw liquid pump Vertical direction.
Fig. 4 is the sectional view of the utility model twin-screw liquid pump substantially horizontal.
Accompanying drawing primary clustering symbol description is as follows:
1 ': decompressor 2 ': generator
3 ': vaporizer 4 ': liquid pump
5 ': condenser
1: decompressor 2: generator
3: vaporizer 4: liquid pump
5: condenser 401: motor
402: male rotor 403: female rotor
4042: the second male rotor bearings of 4041: the first male rotor bearings
405: female rotor bearing 406: seal ring
407: liquid inlet 408: liquid outlet
409: refrigeration working medium entrance 410: the refrigeration working medium outlet
411: the axle envelope
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 2, Fig. 2 has represented to use organic Rankine cycle generating system of the present utility model, and described organic Rankine cycle generating system comprises condenser 5, liquid pump 4, vaporizer 3, decompressor 1, generator 2.Improvement of the present utility model mainly is its liquid pump 4, and in the present embodiment, liquid pump 4 is a twin-screw liquid pump 4.
See also Fig. 3, Fig. 4, described twin-screw liquid pump 4 comprises the housing of half envelope or full envelope, and housing is made from multiple components, and the gap location of each parts is provided with seal ring 406.Housing comprises first cavity, second cavity of mutual isolation.The main body that twin-screw is set in motor 401, the second cavitys is set in described first cavity; At least one rotor of described twin-screw is fixedlyed connected with motor rotor, and twin-screw rotates by the drive of motor 401.The electric energy that the power source of motor 401 can send from described organic Rankine cycle generating system.Described first cavity is provided with liquid refrigeration working medium entrance 409, refrigeration working medium outlet 410, by the evaporative cooling motor 401 of liquid refrigeration working medium; Described second cavity is provided with liquid inlet 407, liquid outlet 408.Described motor can be the motor of adjustable frequency motor or fixed rotating speed, can certainly be common motor.
Described twin-screw liquid pump comprises male rotor 402, female rotor 403; First end of described male rotor 402 is fixedlyed connected with described motor 401 rotors.Described male rotor 402 comprises rotor portion, the attachment portion of integrated design; Shown in rotor portion be arranged in second cavity, cooperate with female rotor 403; Motor 401 inside in first cavity are stretched in described attachment portion.Described first cavity, second cavity separate by an interrupter, and make and form a hole between the cavity of winning, second cavity; Described attachment portion is passed in this hole to the first cavity, fixedlys connected with motor 401 rotors away from an end of rotor portion in the attachment portion.
Described male rotor 402 is provided with the first male rotor bearing 4041 away from second end of motor 401; The two ends of described female rotor 403 are provided with female rotor bearing 405 respectively.Described attachment portion is provided with the second male rotor bearing 4042 between the rotor portion of male rotor and motor rotor.The described attachment portion and the second male rotor bearing 4042 seal by axle envelope 411 near the motor rotor end.
In sum, the full envelope that can be used for the organic Rankine cycle generating system that the utility model proposes or partly seal the twin-screw liquid pump, liquid pump is not because the female rotor resistance apart from very little, can wear and tear good reliability yet when fluid viscosity is very low; Thereby can improve organic Rankine circuit generating efficiency.In addition, the housing of half envelope or full envelope can prevent the leakage of working medium effectively.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here disclosed embodiment's distortion and change are possible, and the various parts of embodiment's replacement and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (7)
1. a twin-screw liquid pump is characterized in that, described twin-screw liquid pump comprises the housing of half envelope or full envelope, and housing comprises first cavity, second cavity of mutual isolation;
In described first cavity motor is set, the main body of twin-screw is set in second cavity;
At least one rotor of described twin-screw is fixedlyed connected with motor rotor, and twin-screw rotates by the drive of motor;
Described first cavity is provided with liquid refrigeration working medium entrance, refrigeration working medium outlet, by the evaporative cooling motor of liquid refrigeration working medium;
Described second cavity is provided with liquid inlet, liquid outlet.
2. twin-screw liquid pump according to claim 1 is characterized in that:
Described twin-screw comprises male rotor, female rotor; First end of described male rotor is fixedlyed connected with described motor rotor.
3. twin-screw liquid pump according to claim 2 is characterized in that:
Described male rotor comprises rotor portion, the attachment portion of integrated design;
Shown in rotor portion be arranged in second cavity, cooperate with female rotor; The motor interior in first cavity is stretched in described attachment portion;
Described first cavity, second cavity separate by an interrupter, make and form a hole between the cavity of winning, second cavity; Described attachment portion is passed in this hole to the first cavity, fixedlys connected with motor rotor away from an end of rotor portion in the attachment portion.
4. twin-screw liquid pump according to claim 3 is characterized in that:
Described male rotor is provided with the first male rotor bearing away from second end of motor; The two ends of described female rotor are provided with the female rotor bearing respectively.
5. twin-screw liquid pump according to claim 4 is characterized in that:
Described attachment portion is provided with the second male rotor bearing between the rotor portion of male rotor and motor rotor.
6. twin-screw liquid pump according to claim 5 is characterized in that:
The described attachment portion and the second male rotor bearing seal by the axle envelope near the motor rotor end.
7. twin-screw liquid pump according to claim 1 is characterized in that:
Described motor is the motor of adjustable frequency motor or fixed rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206124486U CN201865909U (en) | 2010-11-16 | 2010-11-16 | Twin-screw liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206124486U CN201865909U (en) | 2010-11-16 | 2010-11-16 | Twin-screw liquid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865909U true CN201865909U (en) | 2011-06-15 |
Family
ID=44137065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206124486U Expired - Lifetime CN201865909U (en) | 2010-11-16 | 2010-11-16 | Twin-screw liquid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065320A1 (en) * | 2010-11-16 | 2012-05-24 | 上海维尔泰克螺杆机械有限公司 | Twin-screw liquid pump |
| CN105156297A (en) * | 2015-10-09 | 2015-12-16 | 浙江商业机械厂有限公司 | Efficient energy-saving semi-closed refrigerating compressor |
-
2010
- 2010-11-16 CN CN2010206124486U patent/CN201865909U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065320A1 (en) * | 2010-11-16 | 2012-05-24 | 上海维尔泰克螺杆机械有限公司 | Twin-screw liquid pump |
| CN105156297A (en) * | 2015-10-09 | 2015-12-16 | 浙江商业机械厂有限公司 | Efficient energy-saving semi-closed refrigerating compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102061944B (en) | Screw expansion generating device | |
| CN101975160B (en) | Double-screw liquid pump | |
| EP3947922B1 (en) | Power generation system and method to generate power by operation of such power generation system | |
| KR20190132576A (en) | Device for generating electrical energy by means of an orc circuit | |
| CN102022138A (en) | Screw expanding power generating device | |
| US9376938B2 (en) | Waste heat power generator | |
| CN201891440U (en) | Screw expansion power generating device | |
| CN101975094B (en) | Liquid pump of screw expander | |
| CN110578560A (en) | ORC circulation system based on static pressure air bearing | |
| CN206290297U (en) | A kind of Organic Rankine Cycle TRT | |
| CN201865909U (en) | Twin-screw liquid pump | |
| CN205823447U (en) | A kind of compressor system with supercritical carbon dioxide as working medium | |
| CN201857998U (en) | Liquid pump of screw expander | |
| CN103486047B (en) | Can turbo charged rotary compressor | |
| CN203175621U (en) | Screw expansion power generation device and organic Rankine cycle power generation system | |
| CN102733871A (en) | Low-temperature waste heat power generation system | |
| CN103195481B (en) | A kind of screw expansion generating set, organic Rankine cycle power generation system | |
| CN201904689U (en) | Screw expansion generating set | |
| CN203515677U (en) | Scraper rotor ORC (organic rankine cycle) heat engine | |
| CN207194963U (en) | Turbine | |
| CN107367083B (en) | Triple-generation magnetic suspension water chilling unit | |
| CN105240229B (en) | Solar light-heat power-generation system | |
| CN202360419U (en) | Hydrodynamic converter and refrigerating device with same | |
| CN104467288A (en) | Semi-closed type oil cooling system for motor for compressor | |
| CN103133068A (en) | Steam turbine moving blade waste heat composite pressure water suction pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |