CN202280663U - Coupling structure for impeller and gear shaft of centrifugal compressor - Google Patents

Coupling structure for impeller and gear shaft of centrifugal compressor Download PDF

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Publication number
CN202280663U
CN202280663U CN201120391595XU CN201120391595U CN202280663U CN 202280663 U CN202280663 U CN 202280663U CN 201120391595X U CN201120391595X U CN 201120391595XU CN 201120391595 U CN201120391595 U CN 201120391595U CN 202280663 U CN202280663 U CN 202280663U
Authority
CN
China
Prior art keywords
impeller
pressing plate
coupling
centrifugal compressor
gear shaft
Prior art date
Application number
CN201120391595XU
Other languages
Chinese (zh)
Inventor
张海洲
张恒海
邢刚
Original Assignee
重庆美的通用制冷设备有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 重庆美的通用制冷设备有限公司 filed Critical 重庆美的通用制冷设备有限公司
Priority to CN201120391595XU priority Critical patent/CN202280663U/en
Application granted granted Critical
Publication of CN202280663U publication Critical patent/CN202280663U/en

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Abstract

The utility model relates to a coupling structure for an impeller and a gear shaft of a centrifugal compressor, and the coupling structure comprises an impeller and a high-speed shaft. The coupling structure is characterized by also comprising more than one fastening bolt and a pressure plate, wherein the pressure plate is arranged on the central surface of the impeller, and the fastening bolt can be used for fastening and connecting the impeller with the high-speed shaft by virtue of the pressure plate. By virtue of machining, the mounting position of each part can be well guaranteed, the assembly and maintenance are simple, and the operation is reliable. Meanwhile, the air inlet area of the impeller can be improved, and the airflow velocity is reduced, thus the system performance is improved; and meanwhile, part processing and assembling requirements are reduced, thus the cost is invisibly reduced.

Description

Centrifugal compressor impeller and gear shaft connecting structure

Technical field

The utility model relates to a kind of centrifugal compressor impeller and gear shaft connecting structure.

Background technique

In the refrigeration half sealed-off core type refrigeration compressor of main equipment, impeller obtains high rotational speed through gear speed increaser.Existing refrigeration half sealed-off core type refrigeration compressor impeller and high speed connecting structure generally adopts key formula or non-key type, and after the non-key type structure relied on the distortion of high speed shaft elastic stretching, deformation partly recovered to compress impeller.Because impeller is that its rotating speed is very high through motor driving overdrive gear high speed rotating.Have the key formula to connect, owing to keyway design and used key material with reasons such as the impeller body material are inconsistent, will on impeller and high speed shaft, produce extra dynamic unbalance; In addition, owing to be designed with keyway on the impeller, also to consider the problem of impeller local strength influence; Be exactly that the key formula connects and can only circumferentially locate in addition, also will increase axial restraint impeller.Adopt keyless structural design for impeller, high speed shaft elastic stretching amount and deformation amount of recovery are wayward, and the back that stretches is prone to produce the stress concentration phenomenon; It is unreliable that torsion is transmitted in the friction of leaning on impacting force to produce, and the assembling maintenance is wasted time and energy; Also have impeller suction inlet area to dwindle, induction air flow ratio increases, and aeroperformance reduces.

Summary of the invention

The purpose of the utility model is to provide a kind of can improve system reliability, and stable performance reduces the requirement of compressor components maintenance and assembling, increases the impeller inlet area, reduces the centrifugal compressor impeller and the gear shaft connecting structure of impeller induction air flow ratio.

In order to achieve the above object, the technological scheme of the utility model is: a kind of centrifugal compressor impeller and gear shaft connecting structure comprise impeller and high speed shaft; It is characterized in that also comprising clamping bolt and pressing plate more than one; Said pressing plate is positioned at the center surface of impeller, and said clamping bolt connects impeller and high speed shaft are fastening through pressing plate.

Said pressing plate is circular pressing plate, has the groove of installation pressing plate at the center surface of impeller.

The utility model advantage compared with prior art does; Can well guarantee the mounting point of each part through machining; As long as through fastening screw trip bolt and pressing plate with impeller and high gear securely be linked together, can carry out circumferential and axial simultaneously to impeller and locate.Assembling, easy to maintenance connects reliably, and aeroperformance can increase, and cost reduces, and neither needs keyway and key, also need not powerful assembling, has increased the impeller inlet area, has reduced the impeller induction air flow ratio.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the left view of the utility model.

Among the figure: the 1st, pressing plate, the 2nd, clamping bolt, the 3rd, impeller, the 31st, groove, the 4th, high speed shaft.

Embodiment

To combine accompanying drawing and embodiment that the utility model is done further detailed description below:

Like Fig. 1, shown in 2, it is a kind of centrifugal compressor impeller and gear shaft connecting structure, comprises impeller 3 and high speed shaft 4; The utility model characteristics are clamping bolt 2 and the pressing plates 1 that also comprise more than, in the present embodiment, adopt three clamping bolts, also can adopt two or four clamping bolts; Said pressing plate 1 is positioned at the center surface of impeller 3, and said clamping bolt 2 passes through pressing plate 1 with impeller 3 and 4 fastening connections of high speed shaft.During production, can well guarantee the mounting point of each part, assembling, easy to maintenance through machining.

In the present embodiment, said pressing plate 1 is circular pressing plate; In order to make pressing plate 1 and impeller 3 better fit, have the groove 31 of installation pressing plate 1 at the center surface of impeller 3.

Claims (2)

1. centrifugal compressor impeller and gear shaft connecting structure comprise impeller (3) and high speed shaft (4); It is characterized in that also comprising clamping bolt (2) and pressing plate (1) more than one; Said pressing plate (1) is positioned at the center surface of impeller (3), and said clamping bolt (2) passes through pressing plate (1) with impeller (3) and fastening connection of high speed shaft (4).
2. centrifugal compressor impeller according to claim 1 and gear shaft connecting structure is characterized in that said pressing plate (1) is circular pressing plate, have the groove (31) of installation pressing plate (1) at the center surface of impeller (3).
CN201120391595XU 2011-10-15 2011-10-15 Coupling structure for impeller and gear shaft of centrifugal compressor CN202280663U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120391595XU CN202280663U (en) 2011-10-15 2011-10-15 Coupling structure for impeller and gear shaft of centrifugal compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120391595XU CN202280663U (en) 2011-10-15 2011-10-15 Coupling structure for impeller and gear shaft of centrifugal compressor

Publications (1)

Publication Number Publication Date
CN202280663U true CN202280663U (en) 2012-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120391595XU CN202280663U (en) 2011-10-15 2011-10-15 Coupling structure for impeller and gear shaft of centrifugal compressor

Country Status (1)

Country Link
CN (1) CN202280663U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777424A (en) * 2012-07-27 2012-11-14 无锡杰尔压缩机有限公司 Connecting structure of impeller and gear shaft
CN103557175A (en) * 2013-11-13 2014-02-05 三一能源重工有限公司 Connection structure for impeller and shaft
CN103982465A (en) * 2014-05-30 2014-08-13 南京磁谷科技有限公司 Wind guide impeller assembly of centrifugal blower
CN105604979A (en) * 2015-12-21 2016-05-25 重庆美的通用制冷设备有限公司 Two-stage impeller assembly and centrifugal compressor provided with same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777424A (en) * 2012-07-27 2012-11-14 无锡杰尔压缩机有限公司 Connecting structure of impeller and gear shaft
CN103557175A (en) * 2013-11-13 2014-02-05 三一能源重工有限公司 Connection structure for impeller and shaft
CN103982465A (en) * 2014-05-30 2014-08-13 南京磁谷科技有限公司 Wind guide impeller assembly of centrifugal blower
CN105604979A (en) * 2015-12-21 2016-05-25 重庆美的通用制冷设备有限公司 Two-stage impeller assembly and centrifugal compressor provided with same

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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: 20120620

Termination date: 20181015