CN103423197A - Radial-axial flow air intake supercharging impeller for screw compression expansion refrigerator - Google Patents

Radial-axial flow air intake supercharging impeller for screw compression expansion refrigerator Download PDF

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Publication number
CN103423197A
CN103423197A CN2013103725198A CN201310372519A CN103423197A CN 103423197 A CN103423197 A CN 103423197A CN 2013103725198 A CN2013103725198 A CN 2013103725198A CN 201310372519 A CN201310372519 A CN 201310372519A CN 103423197 A CN103423197 A CN 103423197A
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China
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impeller
diffuser ring
centrifugal
blade
compression expansion
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CN2013103725198A
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Chinese (zh)
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张周卫
吴金群
汪雅红
张小卫
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Abstract

The invention relates to a radial-axial flow air intake supercharging impeller for a screw compression expansion refrigerator, which consists of a dynamic centrifugal radial-axial flow impeller and a static diffuser ring. The dynamic centrifugal radial-axial flow impeller consists of an impeller air inlet pipe, an impeller outer shell, impeller blades and an impeller inner shell. The static diffuser ring is formed by diffuser ring blades, a diffuser ring inner shell and a diffuser ring outer shell. The radial-axial flow air intake supercharging impeller for the screw compression expansion refrigerator adopts a centrifugal supercharging principle and an axial diffusion principle, so that the impeller blades drive fluid to rotate at a high speed to generate a centrifugal force, the fluid is subjected to centrifugal acceleration in a flow guide passage formed by the impeller blades and is decelerated and supercharged through the edge of the impeller outer shell, the flowing direction of the fluid is changed, the fluid flows along the axial direction and is subjected to secondary axial diffusion at the diffuser ring and finally, the radial-axial flow supercharging process that the fluid is supercharged along the axial direction is implemented; and the diameter of a cylinder on a compression section of the screw compression expansion refrigerator can be effectively reduced, air flow surging is prevented and the like.

Description

The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle
Technical field
The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle and is applicable to helical compression expansion refrigerator air intake pressurized process and other and need to utilizes centrifugal supercharging and working fluid to need diffusion mobile fluid pressurized equipment vertically.The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle and mainly utilizes fluid CENTRIFUGAL ACCELERATING supercharging principle, blade drive fluid high-speed is rotated and produce centrifugal force, CENTRIFUGAL ACCELERATING in the guide channel of impeller inside and outside shell and blade formation, by shell edge deceleration supercharging and change fluid flow direction, flow vertically and carry out the axial diffusion of secondary at Diffuser ring, finally realizing the footpath axial flow pressurization of fluid supercharging vertically.The present invention is applicable to helical compression expansion refrigerator air intake pressurized process, can effectively reduce helical compression expansion refrigerator compressing section cylinder bore, prevents the air-flow surge.
Background technique
At first, when helical compression expansion refrigerator suction port refrigerant gas enters the helical compression section, because the unstable and instantaneous factor such as air-breathing of air inlet duct source of the gas causes air-intake negative-pressure, easily cause the air-flow surge, damage frivolous multiple coil compression blade, make refrigerator compressing section cisco unity malfunction.For protection helical compression blade; prevent surge; increase the air inlet pressure ratio; at suction port place, helical compression refrigerator compressing section, the helical compression expansion refrigerator is set and flows to the gas supercharging impeller by journal axle; the suction pressure that makes to enter the multistage compression section is increased to 1.1~1.2 times of former pipeline pressure, prevents from intake negative-pressure and compression process occurring more serious surge problem.In addition, traditional centrifugal impeller adopts the diffusion chamber radially is set, and causes centrifugal compressed section cylinder bore to increase, and the compressor volume is larger, and in the diffusion process because disposable change flow direction causes the fluid dynamic energy loss larger, the compressing section temperature is higher.For ease of reducing kinetic energy rejection and the compressing section diffusion cavity configuration of helical compression expansion refrigerator compressing section, compresses section cylinder bore, the totally-enclosed journal axle that the present invention adopts flow outlet to arrange vertically is to backward-bladed impeller, the air-flow Diffuser ring of diffusion vertically is set after impeller again, and Diffuser ring is installed on the air outlet of centrifugal impeller.At first air-flow after CENTRIFUGAL ACCELERATING changes direction through the centrifugal impeller shell, after the deceleration diffusion, then enter vertically Diffuser ring and carry out secondary diffusion, after having overcome traditional footpath axial flow impeller centrifugal compressed, the diffusion chamber is disposed radially, the shortcoming that the compressing section cylinder bore is larger.This impeller also is applicable to need compresses section cylinder bore, prevents other fluid machinery of fluid surge.
Summary of the invention
According to helical compression expansion refrigerator footpath axial flow supercharging principle and refrigerator structure needs, invent the helical compression expansion refrigerator and flow to the gas supercharging impeller by journal axle, this impeller can make high-velocity fluid flow vertically and diffusion, can reduce the compressing section cylinder bore, prevents the characteristics such as air-flow surge.
Technical solution of the present invention:
The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle and is comprised of dynamic centrifugal footpath axial flow impeller and static Diffuser ring two-part, dynamic centrifugal footpath axial flow impeller consists of impeller suction tude 1, impeller housing 2, impeller blade 3, impeller inner casing 4, static Diffuser ring consists of Diffuser ring blade 5, Diffuser ring inner casing 6, Diffuser ring shell 7, and both are coaxial and be axially symmetric structure.
Dynamically centrifugal impeller shell 2 is axisymmetric half elliptic housing, top drilling; Dynamically centrifugal impeller inner casing 4 is axisymmetric half elliptic housing, and size is less than impeller housing 2 and is installed on impeller housing 2 inside; Dynamically centrifugal impellers blades 3 be also circumference array radially of backward leaning vane.
Diffuser ring blade 5 is installed between Diffuser ring inner casing 6 and Diffuser ring shell 7; Diffuser ring blade 5 top attachment Diffuser ring shell 7 internal surfaces, bottom connects Diffuser ring inner casing 6 outer surfaces; Diffuser ring blade 5 is circular arc flute profile blade circumference array radially.
Suction tude 1 is connected with impeller housing 2 tops; Impeller blade 3 top edges are connected with impeller housing 2 internal surfaces; Impeller blade 3 lower limbs are connected with impeller inner casing 4; Impeller blade 3 is installed between impeller housing 2 and impeller inner casing 4.
Dynamic centrifugal footpath axial flow impeller is front, and static Diffuser ring is rear, both coaxial adjacent installations.
Fluid enters the guide channel between dynamic centrifugal footpath axial flow impeller housing 2 and impeller inner casing 4 through suction tude 1, impeller blade 3 drives fluid and does High Rotation Speed, make fluid produce centrifugal force, and CENTRIFUGAL ACCELERATING in the guide channel formed at impeller housing 2, impeller inner casing 4 and impeller blade 3, in impeller housing 2 edge deceleration superchargings and change flow direction, flow into vertically static Diffuser ring diffusion.
The Principle Problems that scheme is related:
The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle and adopts journal axle streamed, axial twice diffusion in footpath, the journal axle of the axial flow heart supercharging principle of wandering about as a refugee, at suction port place, helical compression refrigerator compressing section, the helical compression expansion refrigerator is set and flows to the gas supercharging impeller by journal axle, the surge problem that when solution enters the helical compression section due to helical compression expansion refrigerator suction port refrigerant gas, the unstable and instantaneous negative pressure of air inlet duct source of the gas causes, protection multiple coil compression blade, increase air inlet pressure than 1.1~1.2 times, prevent helical compression expansion refrigerator air inlet pressure compression process generation surge, refrigerator can be worked.Secondly, traditional centrifugal impeller diffusion chamber radially arranges, and causes centrifugal compressed section cylinder bore to increase, and the compressor volume is larger, and in the diffusion process because disposable change flow direction causes the fluid dynamic energy loss larger, the compressing section temperature is higher.For ease of kinetic energy rejection and the change diffusion cavity configuration that reduces helical compression expansion refrigerator compressing section, compresses section cylinder bore, the totally-enclosed journal axle that the present invention adopts flow outlet to arrange vertically is to backward-bladed impeller, the air-flow Diffuser ring of diffusion vertically is set after impeller again, Diffuser ring is installed on the centrifugal impeller air outlet, at first air-flow after centrifugal changes direction through the centrifugal impeller shell, after the deceleration diffusion, enter again axial Diffuser ring and carry out secondary diffusion, after having overcome traditional footpath axial flow impeller centrifugal compressed, the diffusion chamber is disposed radially, the shortcoming that the compressing section cylinder bore is larger.
The helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle and also is applicable to other and needs compresses section cylinder bore, prevents other fluid machinery of fluid surge.
Technical characterstic of the present invention:
At first, the present invention has adopted the footpath axial flow type helical compression expansion refrigerator air intake pressurized impeller of diffusion vertically, has solved helical compression expansion refrigerator air inlet surge problem, has overcome the multiple coil compression blade because surge is easy to the shortcoming of damaging.Secondly, because flowing to the gas supercharging impeller by journal axle, the helical compression expansion refrigerator adopted backward bending type air inlet helical blade and axial Diffuser ring, changed the airflow direction after centrifugal, air-flow is flowed vertically and at axial diffusion, changed the centrifugal compressed process and adopted the radially conventional method of diffusion, centrifugal compressed section diameter is reduced greatly.Secondly, because flowing to the gas supercharging impeller by journal axle, the helical compression expansion refrigerator formed by dynamic centrifugal impeller and static Diffuser ring, compression process is the centrifugal compressed process, the axial diffusion process that can be used for compressible fluid, the axial diffusion process that also can be used for incompressible fluid, but compresses section cylinder bore, alleviate the surge of compressible fluid and the harm such as cavitation erosion of incompressible fluid.Finally, the helical compression expansion refrigerator flows to the gas supercharging impeller after the fluid CENTRIFUGAL ACCELERATING by journal axle, at first experience dynamic impeller edge and axially change flow direction diffusion moderating process, secondly fluid changes flow direction in static Diffuser ring, the static diffusion of secondary, make whole axial compression process experience the diffusion process twice, effectively reduced the kinetic energy rejection of diffusion process.
The accompanying drawing explanation
Figure 1 shows that the helical compression expansion refrigerator flows to gas supercharging impeller 3 dimensional drawing by journal axle;
Figure 2 shows that the helical compression expansion refrigerator flows to gas supercharging impeller plan view by journal axle;
Figure 3 shows that the helical compression expansion refrigerator flows to gas supercharging impeller plan view by journal axle;
Figure 4 shows that the helical compression expansion refrigerator flows to gas supercharging impeller Diffuser ring graphics by journal axle;
Figure 5 shows that the helical compression expansion refrigerator flows to gas supercharging impeller Diffuser ring plan view by journal axle;
Figure 6 shows that the helical compression expansion refrigerator flows to gas supercharging impeller Diffuser ring plan view by journal axle.
Embodiment
At first, dynamic centrifugal footpath axial flow impeller and static Diffuser ring for manufacturing helical compression expansion refrigerator, both are coaxial and be axially symmetric structure, dynamic centrifugal footpath axial flow impeller consists of impeller suction tude 1, impeller housing 2, impeller blade 3, impeller inner casing 4, and static Diffuser ring consists of Diffuser ring blade 5, Diffuser ring inner casing 6, Diffuser ring shell 7.Dynamically the centrifugal impeller shell is axisymmetric half elliptic housing, top drilling; Dynamically centrifugal impeller inner casing 4 is axisymmetric half elliptic housing, and size is less than impeller housing 2 and is installed on impeller housing 2 inside; Dynamically centrifugal impellers blades 3 be also circumference array radially of backward leaning vane.Diffuser ring blade 5 is installed between Diffuser ring inner casing 6 and Diffuser ring shell 7; Diffuser ring blade 5 top attachment Diffuser ring shell 7 internal surfaces, bottom connects Diffuser ring inner casing 6 outer surfaces; Diffuser ring blade 5 is circular arc flute profile blade circumference array radially.Secondly, suction tude 1 is connected with the impeller housing top; Impeller blade 3 top edges are connected with the impeller housing internal surface; Impeller blade 3 lower limbs are connected with impeller inner casing 4; Impeller blade 3 is installed between impeller housing 2 and impeller inner casing 4.Then, the helical compression expansion refrigerator is installed on to helical compression expansion refrigerator import rotating shaft with dynamic centrifugal footpath axial flow impeller and static Diffuser ring, dynamic centrifugal footpath axial flow impeller is front, and static Diffuser ring is rear, both coaxial adjacent installations.Finally, open helical compression expansion refrigerator enable switch, make air-flow enter the guide channel between dynamic centrifugal footpath axial flow impeller housing 2 and impeller inner casing 4 through suction tude 1, blade 3 drives fluid and does High Rotation Speed, fluid produces centrifugal force, and CENTRIFUGAL ACCELERATING in the guide channel formed at impeller housing 2, inner casing 4 and impeller blade 3, in impeller housing 2 edge deceleration superchargings and change flow direction, finally flow into vertically static Diffuser ring diffusion, complete whole pressurization.

Claims (5)

1. the helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle, it is characterized in that: this impeller is comprised of dynamic centrifugal footpath axial flow impeller and static Diffuser ring two-part, dynamic centrifugal footpath axial flow impeller consists of impeller suction tude (1), impeller housing (2), impeller blade (3), impeller inner casing (4), static Diffuser ring consists of Diffuser ring blade (5), Diffuser ring inner casing (6), Diffuser ring shell (7), and both are coaxial and be axially symmetric structure.
2. according to claim 1Described helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle, it is characterized in that: dynamically centrifugal impeller shell (2) is axisymmetric half elliptic housing, top drilling; Dynamically centrifugal impeller inner casing (4) is axisymmetric half elliptic housing, and size is less than impeller housing (2) and is installed on impeller housing (2) inside; Dynamically centrifugal impellers blades (3) be also circumference array radially of backward leaning vane.
3. according to claim 1Described helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle, it is characterized in that: Diffuser ring blade (5) is installed between Diffuser ring inner casing (6) and Diffuser ring shell (7); Diffuser ring blade (5) top attachment Diffuser ring shell (7) internal surface, bottom connects Diffuser ring inner casing (6) outer surface; Diffuser ring blade (5) is circular arc flute profile blade circumference array radially.
4. according to claim 1Described helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle, it is characterized in that: suction tude (1) is connected with impeller housing (2) top; Impeller blade (3) top edge is connected with impeller housing (2) internal surface; Impeller blade (3) lower limb is connected with impeller inner casing (4); Impeller blade (3) is installed between impeller housing (2) and impeller inner casing (4).
5. according to claim 1Described helical compression expansion refrigerator flows to the gas supercharging impeller by journal axle, it is characterized in that: dynamic centrifugal footpath axial flow impeller is front, and static Diffuser ring is rear, both coaxial adjacent installations.
CN2013103725198A 2013-08-25 2013-08-25 Radial-axial flow air intake supercharging impeller for screw compression expansion refrigerator Pending CN103423197A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112096460A (en) * 2020-09-15 2020-12-18 中国船舶重工集团公司第七一一研究所 Radial-flow type turboexpander structure
CN116293975A (en) * 2023-03-01 2023-06-23 青岛海信日立空调系统有限公司 Air conditioning system

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Publication number Priority date Publication date Assignee Title
EP0301273A2 (en) * 1987-07-31 1989-02-01 Kabushiki Kaisha Toshiba Fluid compressor
CN2357132Y (en) * 1998-11-06 2000-01-05 淄博矿山节能技术研究所 Radial shaft mixed-flow ventilator for mine
CN1386983A (en) * 2002-06-06 2002-12-25 孙敏超 Efficient propeller with blades curled backward for centrifugal propeller machinery
JP2003056483A (en) * 2001-08-21 2003-02-26 Mitsubishi Heavy Ind Ltd Pump and air conditioner with the pump
WO2007007142A1 (en) * 2005-07-14 2007-01-18 Dumitru Bucuresteanu Air compressor comprising a continuous propeller in a revolving tube
US20100119363A1 (en) * 2008-09-10 2010-05-13 Manjit Sagoo High-Efficiency, Multi-Stage Centrifugal Pump and Method of Assembly
CN202579350U (en) * 2012-05-25 2012-12-05 上虞市曹娥电机制造有限公司 Mixed-flow fire-fighting smoke discharge ventilator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301273A2 (en) * 1987-07-31 1989-02-01 Kabushiki Kaisha Toshiba Fluid compressor
CN2357132Y (en) * 1998-11-06 2000-01-05 淄博矿山节能技术研究所 Radial shaft mixed-flow ventilator for mine
JP2003056483A (en) * 2001-08-21 2003-02-26 Mitsubishi Heavy Ind Ltd Pump and air conditioner with the pump
CN1386983A (en) * 2002-06-06 2002-12-25 孙敏超 Efficient propeller with blades curled backward for centrifugal propeller machinery
WO2007007142A1 (en) * 2005-07-14 2007-01-18 Dumitru Bucuresteanu Air compressor comprising a continuous propeller in a revolving tube
US20100119363A1 (en) * 2008-09-10 2010-05-13 Manjit Sagoo High-Efficiency, Multi-Stage Centrifugal Pump and Method of Assembly
CN202579350U (en) * 2012-05-25 2012-12-05 上虞市曹娥电机制造有限公司 Mixed-flow fire-fighting smoke discharge ventilator

Non-Patent Citations (1)

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Title
中远能源与动力工程企业集团: "通用气体变频非等环量螺旋压缩膨胀制冷机", 《中远能源与动力工程企业集团》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112096460A (en) * 2020-09-15 2020-12-18 中国船舶重工集团公司第七一一研究所 Radial-flow type turboexpander structure
CN116293975A (en) * 2023-03-01 2023-06-23 青岛海信日立空调系统有限公司 Air conditioning system

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Application publication date: 20131204