CN106801619A - The adjustable screw expander of volumetric ratio - Google Patents
The adjustable screw expander of volumetric ratio Download PDFInfo
- Publication number
- CN106801619A CN106801619A CN201710124578.1A CN201710124578A CN106801619A CN 106801619 A CN106801619 A CN 106801619A CN 201710124578 A CN201710124578 A CN 201710124578A CN 106801619 A CN106801619 A CN 106801619A
- Authority
- CN
- China
- Prior art keywords
- guiding valve
- air inlet
- screw expander
- volumetric ratio
- rotor
- 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
Links
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
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/10—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F01C20/12—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
-
- 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
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F01C1/101—Moineau-type
-
- 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
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F01C1/107—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
-
- 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
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/28—Safety arrangements; Monitoring
Abstract
Present invention is disclosed a kind of adjustable screw expander of volumetric ratio, the screw expander includes：Body, end body, rotor, guiding valve, body are provided with rotor chamber, piston chamber；The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body is provided with air inlet, gas outlet, and guiding valve is set near air inlet, and the guiding valve is provided with guiding valve governor motion, by the air inflow of the position adjustments air inlet of guiding valve governor motion spool control valve；The air inlet, gas outlet are equipped with pressure sensor, pressure sensor connection controller, controller connection oil cylinder.The adjustable screw expander of volumetric ratio proposed by the present invention, can be according to the position of the actual condition regulating slide valve for reclaiming the energy, so that the induction port of screw expander is matched with actual demand, avoided expansion or the generation of deficient expansion status, it is ensured that screw expander is in hgher efficiency, noise is lower, it is smaller to vibrate.
Description
Technical field
The invention belongs to screw expander technical field, it is related to a kind of screw expander, more particularly to a kind of volumetric ratio can
The screw expander of tune.
Background technology
Screw expander is a kind of machinery that mechanical work is externally exported using the gas expansion with certain pressure, main to use
In the recovery of low-grade energy.The external output mechanical work of screw expander can drive electrical power generators, it is also possible to directly drive
Dynamic power-equipment.
Existing expander inlet determines that in expanding machine running, its air inlet is fixed according to the operating mode of setting, when
Expander inlet gas operating mode (including pressure and temperature) changes or exit gas operating mode (including pressure and temperature), with original
There is air inlet Vi to mismatch, will result in expansion and the generation of deficient expansion status, influence the operational efficiency of expanding machine.Expanding machine
When inlet gas pressure is less than design pressure higher than design pressure or outlet gas pressure, it may occur that owe expansion；Expander inlet
When gas pressure is higher than design pressure less than design pressure or outlet pressure of expansion machine, it may occur that cross and expand.Such as Fig. 2, Fig. 3 institute
Show, hatched area is the negative work done more.
In view of this, nowadays in the urgent need to designing a kind of new screw expander, to overcome existing screw expander to deposit
Drawbacks described above.
The content of the invention
The technical problems to be solved by the invention are：There is provided a kind of volumetric ratio adjustable screw expander, can be according to recovery
The position of the actual condition regulating slide valve of the energy so that the induction port of screw expander is matched with actual demand, it is to avoid excessively swollen
The generation of swollen or deficient expansion status, it is ensured that screw expander is in hgher efficiency, noise is lower, it is smaller to vibrate.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of adjustable screw expander of volumetric ratio, the screw expander includes：Body, end body, rotor, guiding valve, machine
Body is provided with rotor chamber, piston chamber；
The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body is provided with air inlet
Mouth, gas outlet, guiding valve are set near air inlet, by the air inflow of slidable adjustment air inlet；
The guiding valve is provided with drive mechanism, resetting-mechanism, and drive mechanism includes oil cylinder, piston, and resetting-mechanism includes resetting
Spring, piston, back-moving spring are respectively arranged at the two ends of guiding valve, and oil cylinder is arranged on the body of end；
The air inlet, gas outlet are equipped with pressure sensor and temperature sensor, pressure sensor, temperature sensor point
Controller, controller connection oil cylinder are not connected.
A kind of adjustable screw expander of volumetric ratio, the screw expander includes：Body, end body, rotor, guiding valve, machine
Body is provided with rotor chamber, piston chamber；
The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body is provided with air inlet
Mouth, gas outlet, guiding valve are set near air inlet, and the guiding valve is provided with guiding valve governor motion, control to slide by guiding valve governor motion
The air inflow of the position adjustments air inlet of valve；
The air inlet, gas outlet are equipped with pressure sensor, pressure sensor connection controller, controller connection oil
Cylinder.
Used as a preferred embodiment of the present invention, the guiding valve governor motion includes drive mechanism, resetting-mechanism；Driving machine
Structure includes oil cylinder, piston, and resetting-mechanism includes back-moving spring, and piston, back-moving spring are respectively arranged at the two ends of guiding valve, and oil cylinder sets
It is placed on the body of end.
Used as a preferred embodiment of the present invention, the guiding valve governor motion includes first processor, motor, the first communication
Unit, first processor connects motor, the first communication unit respectively；Motor connects guiding valve by conduction mechanism, or directly connects
Connect guiding valve.
Used as a preferred embodiment of the present invention, the guiding valve governor motion connects sensing device, and sensing device includes the
Two processors, the second communication unit, temperature sensor, pressure sensor, second processing device connect the second communication unit, temperature respectively
Degree sensor, pressure sensor.
Used as a preferred embodiment of the present invention, the air inlet, gas outlet are additionally provided with temperature sensor, temperature sensor
Connection controller.
The beneficial effects of the present invention are：The adjustable screw expander of volumetric ratio proposed by the present invention, can be according to recovery energy
The position of the actual condition regulating slide valve in source so that the induction port of screw expander is matched with actual demand, it is to avoid cross and expand
Or the generation of deficient expansion status, it is ensured that screw expander is in hgher efficiency, noise is lower, it is smaller to vibrate.
Brief description of the drawings
Fig. 1 is P-V figures ideally (dash area is ideally to do work).
P-V figures when Fig. 2 was expansion (dash area is negative work).
Fig. 3 schemes (dash area is negative work) to owe P-V during expansion.
Fig. 4 is the structural representation of the adjustable screw expander of volumetric ratio of the present invention.
Fig. 5 is another structural representation of the adjustable screw expander of volumetric ratio of the present invention.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment one
Fig. 4, Fig. 5 are referred to, present invention is disclosed a kind of adjustable screw expander of volumetric ratio, the screw expander bag
Include：Body 1, end body 5, rotor 4, guiding valve 7, body 1 are provided with rotor chamber, piston chamber.The rotor 4 is arranged in rotor chamber, end
The side of body 5, guiding valve 7 is arranged in piston chamber.
The body 1 is provided with air inlet 2, gas outlet 3, and guiding valve 7 is set near air inlet 2, by slidable adjustment air inlet 2
Air inflow.
The guiding valve 7 is provided with drive mechanism, resetting-mechanism, and drive mechanism includes oil cylinder 8, piston 9, and resetting-mechanism includes multiple
Position spring 6, piston 9, back-moving spring 6 are respectively arranged at the two ends of guiding valve 7, and oil cylinder 8 is arranged on the body 5 of end.
The air inlet 2, gas outlet 3 are equipped with pressure sensor and temperature sensor, pressure sensor, temperature sensor
Controller, controller connection oil cylinder 8 are connected respectively.
When expander inlet pressure rise or outlet pressure reduction, by charge oil pressure in control cylinder, regulating slide valve edge
Piston chamber is moved right so that expanding machine Vi increases, and expander inlet diminishes, it is to avoid owe the generation of expansion operating mode.
When the reduction of expander inlet pressure or outlet pressure are raised, by charge oil pressure in control cylinder, regulating slide valve edge
Piston chamber is to left movement so that expanding machine Vi reduces, and expander inlet becomes big, it is to avoid cross the generation for expanding operating mode.
Expanding machine P-V figures when actual motion uses volume adjustable than guiding valve, red is represented when outlet pressure is raised and run
P-V figure, blueness represent outlet pressure reduction when run P-V figure, by the regulation of guiding valve, can make expanding machine be in one
Optimal running status.
Embodiment two
A kind of adjustable screw expander of volumetric ratio, the screw expander includes：Body, end body, rotor, guiding valve, machine
Body is provided with rotor chamber, piston chamber；
The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body is provided with air inlet
Mouth, gas outlet, guiding valve are set near air inlet, and the guiding valve is provided with guiding valve governor motion, control to slide by guiding valve governor motion
The air inflow of the position adjustments air inlet of valve；
The air inlet, gas outlet are equipped with pressure sensor, pressure sensor connection controller, controller connection oil
Cylinder.
The present embodiment is with the difference of embodiment one, and in the present embodiment, the guiding valve governor motion includes the first treatment
Device, motor, the first communication unit, first processor connect motor, the first communication unit respectively；Motor is connected by conduction mechanism
Guiding valve, or it is directly connected to guiding valve.
The guiding valve governor motion connects sensing device, and sensing device includes second processing device, the second communication unit, temperature
Sensor, pressure sensor, second processing device connect the second communication unit, temperature sensor, pressure sensor respectively.
In sum, the adjustable screw expander of volumetric ratio proposed by the present invention, can be according to the actual condition for reclaiming the energy
The position of regulating slide valve so that the induction port of screw expander is matched with actual demand, it is to avoid cross expansion or deficient expansion status
Generation, it is ensured that screw expander is in hgher efficiency, noise is lower, vibrate it is smaller.
Here description of the invention and application are illustrative, are not wishing to limit the scope of the invention to above-described embodiment
In.The deformation and change of embodiments disclosed herein are possible, real for those skilled in the art
The replacement and equivalent various parts for applying example are known.It should be appreciated by the person skilled in the art that not departing from the present invention
Spirit or essential characteristics in the case of, the present invention can in other forms, structure, arrangement, ratio, and with other components,
Material and part are realized.In the case where scope and spirit of the present invention are not departed from, embodiments disclosed herein can be entered
Other deformations of row and change.
Claims (6)
1. the adjustable screw expander of a kind of volumetric ratio, it is characterised in that the screw expander includes：Body, end body, turn
Son, guiding valve, body are provided with rotor chamber, piston chamber；
The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body be provided with air inlet,
Gas outlet, guiding valve is set near air inlet, by the air inflow of slidable adjustment air inlet；
The guiding valve is provided with drive mechanism, resetting-mechanism, and drive mechanism includes oil cylinder, piston, and resetting-mechanism includes back-moving spring,
Piston, back-moving spring are respectively arranged at the two ends of guiding valve, and oil cylinder is arranged on the body of end；
The air inlet, gas outlet are equipped with pressure sensor and temperature sensor, and pressure sensor, temperature sensor connect respectively
Connect controller, controller connection oil cylinder.
2. the adjustable screw expander of a kind of volumetric ratio, it is characterised in that the screw expander includes：Body, end body, turn
Son, guiding valve, body are provided with rotor chamber, piston chamber；
The rotor is arranged in rotor chamber, the side of end body, and guiding valve is arranged in piston chamber；The body be provided with air inlet,
Gas outlet, guiding valve is set near air inlet, and the guiding valve is provided with guiding valve governor motion, by guiding valve governor motion spool control valve
The air inflow of position adjustments air inlet；
The air inlet, gas outlet are equipped with pressure sensor, pressure sensor connection controller, controller connection oil cylinder.
3. the adjustable screw expander of volumetric ratio according to claim 2, it is characterised in that：
The guiding valve governor motion includes drive mechanism, resetting-mechanism；Drive mechanism includes oil cylinder, piston, and resetting-mechanism includes
Back-moving spring, piston, back-moving spring are respectively arranged at the two ends of guiding valve, and oil cylinder is arranged on the body of end.
4. the adjustable screw expander of volumetric ratio according to claim 2, it is characterised in that：
The guiding valve governor motion include first processor, motor, the first communication unit, first processor connect respectively motor,
First communication unit；Motor connects guiding valve by conduction mechanism, or is directly connected to guiding valve.
5. the adjustable screw expander of volumetric ratio according to claim 4, it is characterised in that：
The guiding valve governor motion connects sensing device, and sensing device includes second processing device, the second communication unit, TEMP
Device, pressure sensor, second processing device connect the second communication unit, temperature sensor, pressure sensor respectively.
6. the adjustable screw expander of volumetric ratio according to claim 2, it is characterised in that：
The air inlet, gas outlet are additionally provided with temperature sensor, temperature sensor connection controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124578.1A CN106801619A (en) | 2017-03-03 | 2017-03-03 | The adjustable screw expander of volumetric ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124578.1A CN106801619A (en) | 2017-03-03 | 2017-03-03 | The adjustable screw expander of volumetric ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106801619A true CN106801619A (en) | 2017-06-06 |
Family
ID=58987622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710124578.1A Pending CN106801619A (en) | 2017-03-03 | 2017-03-03 | The adjustable screw expander of volumetric ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106801619A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104879A (en) * | 2018-01-17 | 2018-06-01 | 无锡锡压压缩机有限公司 | A kind of screw expander, helical-lobe compressor, the integrated system of motor |
| CN109026162A (en) * | 2018-07-16 | 2018-12-18 | 朱三立 | A kind of screw expansion (compression) machine with variable volume ratio |
| CN111173568A (en) * | 2020-01-08 | 2020-05-19 | 林文润 | Screw expander for industrial waste heat recovery |
| CN113775379A (en) * | 2020-06-10 | 2021-12-10 | 比泽尔制冷设备有限公司 | Screw expander and device for extracting electrical energy from heat having a screw expander |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860668A (en) * | 1958-02-27 | 1961-02-08 | Svenska Rotor Maskiner Ab | Improvements in rotary expanders of the intermeshing helical screw type |
| US4220197A (en) * | 1979-01-02 | 1980-09-02 | Dunham-Bush, Inc. | High speed variable delivery helical screw compressor/expander automotive air conditioning and waste heat energy _recovery system |
| JPS63215804A (en) * | 1987-03-03 | 1988-09-08 | Hisaka Works Ltd | Optimum operation method for screw expander |
| GB2282642A (en) * | 1993-10-07 | 1995-04-12 | Howden Compressors Ltd | Variable volume screw compressor |
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| US6302668B1 (en) * | 2000-08-23 | 2001-10-16 | Fu Sheng Industrial Co., Ltd. | Capacity regulating apparatus for compressors |
| US20040234381A1 (en) * | 2001-02-15 | 2004-11-25 | Mayekawa Mfg. Co., Ltd. | Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure |
| CN101936186A (en) * | 2010-09-06 | 2011-01-05 | 宋江喜 | Screw type volume expansion machine |
| CN102042226A (en) * | 2011-01-05 | 2011-05-04 | 上海维尔泰克螺杆机械有限公司 | Screw compressor having slide valve with flexible volume ratio |
| CN105715548A (en) * | 2016-04-01 | 2016-06-29 | 浙江开山凯文螺杆机械有限公司 | Two-grade screw rod compressor with flexible slide valve |
| JP2016130483A (en) * | 2015-01-14 | 2016-07-21 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Screw fluid machine |
| CN205858683U (en) * | 2016-07-31 | 2017-01-04 | 杰瑞石油天然气工程有限公司 | Screw compressor pressure at expulsion governor motion |
| CN206522158U (en) * | 2017-03-03 | 2017-09-26 | 上海维尔泰克螺杆机械有限公司 | The adjustable screw expander of volumetric ratio |
-
2017
- 2017-03-03 CN CN201710124578.1A patent/CN106801619A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860668A (en) * | 1958-02-27 | 1961-02-08 | Svenska Rotor Maskiner Ab | Improvements in rotary expanders of the intermeshing helical screw type |
| US4220197A (en) * | 1979-01-02 | 1980-09-02 | Dunham-Bush, Inc. | High speed variable delivery helical screw compressor/expander automotive air conditioning and waste heat energy _recovery system |
| JPS63215804A (en) * | 1987-03-03 | 1988-09-08 | Hisaka Works Ltd | Optimum operation method for screw expander |
| GB2282642A (en) * | 1993-10-07 | 1995-04-12 | Howden Compressors Ltd | Variable volume screw compressor |
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| US6302668B1 (en) * | 2000-08-23 | 2001-10-16 | Fu Sheng Industrial Co., Ltd. | Capacity regulating apparatus for compressors |
| US20040234381A1 (en) * | 2001-02-15 | 2004-11-25 | Mayekawa Mfg. Co., Ltd. | Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure |
| CN101936186A (en) * | 2010-09-06 | 2011-01-05 | 宋江喜 | Screw type volume expansion machine |
| CN102042226A (en) * | 2011-01-05 | 2011-05-04 | 上海维尔泰克螺杆机械有限公司 | Screw compressor having slide valve with flexible volume ratio |
| JP2016130483A (en) * | 2015-01-14 | 2016-07-21 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Screw fluid machine |
| CN105715548A (en) * | 2016-04-01 | 2016-06-29 | 浙江开山凯文螺杆机械有限公司 | Two-grade screw rod compressor with flexible slide valve |
| CN205858683U (en) * | 2016-07-31 | 2017-01-04 | 杰瑞石油天然气工程有限公司 | Screw compressor pressure at expulsion governor motion |
| CN206522158U (en) * | 2017-03-03 | 2017-09-26 | 上海维尔泰克螺杆机械有限公司 | The adjustable screw expander of volumetric ratio |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104879A (en) * | 2018-01-17 | 2018-06-01 | 无锡锡压压缩机有限公司 | A kind of screw expander, helical-lobe compressor, the integrated system of motor |
| CN109026162A (en) * | 2018-07-16 | 2018-12-18 | 朱三立 | A kind of screw expansion (compression) machine with variable volume ratio |
| CN111173568A (en) * | 2020-01-08 | 2020-05-19 | 林文润 | Screw expander for industrial waste heat recovery |
| CN113775379A (en) * | 2020-06-10 | 2021-12-10 | 比泽尔制冷设备有限公司 | Screw expander and device for extracting electrical energy from heat having a screw expander |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106801619A (en) | The adjustable screw expander of volumetric ratio | |
| US10364807B2 (en) | Method and device for actuating an electrically commutated fluid working machine | |
| CN104848250B (en) | A kind of primary air pressure desired value intelligence control system and method | |
| CN205064457U (en) | Fan -driving variable hydraulic system of loader load sensing | |
| CN204961300U (en) | Unit doublestage frequency conversion helical -lobe compressor with adjustable inner volume compares | |
| CN105715548A (en) | Two-grade screw rod compressor with flexible slide valve | |
| CN112310447A (en) | Fuel cell system | |
| CN206522158U (en) | The adjustable screw expander of volumetric ratio | |
| CN103437833B (en) | Air inlet guide vane adjusting device | |
| CN105128662B (en) | Hydraulic driving electric generator energy-conserving electricity generation system | |
| CN102395792B (en) | Roughing pump method for a positive displacement pump | |
| CN108672123A (en) | A kind of adjustable injector of mixing chamber throat opening area | |
| CN107514362A (en) | Inverter screw compressor and its energy adjustment control method and air-conditioning system | |
| CN206522159U (en) | Screw expander with gas supplementing opening | |
| CN106438584A (en) | Motor speed regulation based variable-pressure variable-displacement type hydraulic servo mechanism and working method | |
| CN204851560U (en) | Positive flow control electric proportional pump | |
| CN101936186A (en) | Screw type volume expansion machine | |
| RU2667476C2 (en) | Stepper piezoelectric motor | |
| CN210564944U (en) | Constant-pressure ultrahigh-pressure water pump station | |
| CN105545490B (en) | Closed-loop gas turbine hydraulic starting method and gas turbine hydraulic system | |
| CN201330695Y (en) | Clearance setting device for capacity-varying regulation of linear compressor | |
| Zhang et al. | Novel piezoelectric pump with “E”-shaped valve found from sub-experiments | |
| CN101832180B (en) | Turbo type gas-gas pressure charging device | |
| CN106460570B (en) | Make the equipment of gas compression and expansion and in two pressure networks control pressure method | |
| JP2020067028A (en) | Compressor |
Legal Events
| 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 |