CN209483690U

CN209483690U - Compressor impeller with blade deformation detection function

Info

Publication number: CN209483690U
Application number: CN201821932600.1U
Authority: CN
Inventors: 沈耀兴; 毛乔章
Original assignee: Wuxi Haixing Shipping Power Co Ltd
Current assignee: Wuxi Haixing Shipping Power Co Ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2019-10-11
Anticipated expiration: 2028-11-22

Abstract

The utility model discloses a kind of compressor impellers with blade deformation detection function, including impeller body, the impeller body includes chassis, shaft connecting hole, rotary table entity and wind blade, the lower end surface of the rotary table entity is connected to the upper surface on the chassis, the inside center of the rotary table entity, which runs through, is equipped with the shaft connecting hole, the opening of the shaft connecting hole is exported from the upper surface of the rotary table entity, the surrounding of the rotary table entity sets the arcuate flanks of indent, several wind blades are connected in the arcuate flanks, the surface of the wind blade is equipped with the shape changing detection slot of several strips, the shape changing detection geosynclinal concave sinks into the side end surface of the wind blade, the shape changing detection slot is each perpendicular to the arcuate flanks, the inside of the shape changing detection slot, which attaches, is equipped with resistance strain gage, the resistance-strain The output end of piece connects Wheatstone bridge circuit.By the above-mentioned means, the utility model is able to detect the deformation degree of impeller surface blade.

Description

Compressor impeller with blade deformation detection function

Technical field

The utility model relates to compressor impeller fields, more particularly to a kind of compression with blade deformation detection function Machine impeller.

Background technique

Compressor is a kind of driven fluid machinery that low-pressure gas is promoted to high pressure gas, is the heart of refrigeration system Dirty, it is operated after compressing with piston to it, to row from the refrigerant gas of air intake duct sucking low-temp low-pressure by motor The refrigerant gas of high temperature and pressure is discharged in tracheae, provides power for refrigeration cycle, and the core component of the inside of compressor is impeller, Also known as active wheel, the only element to air-flow work done in centrifugal compressor, the main component on rotor, impeller, which both refers to, to be equipped with The wheel disc of movable vane is the component part of impulse turbine rotor, several blades is connected on the surface of impeller, and blade surrounds Impeller body rotation and rotate, do work during high speed rotation with air, from a large amount of air of impeller center sucking, so It is released afterwards from surrounding by air by centrifugal force, plays the role of compressed air, the work service life of compressor is mainly by interior The loss of portion's part impeller determines, and the loss of impeller is concentrated mainly on blade, and the impeller manufactured at present is without interior Testing agency is set to detect the deformation of impeller, results in and occurs timely not obtaining after deformation is lost in the impeller to work long hours Know, influence the normal work of compressor, global production operation is influenced during failure.

Utility model content

The utility model is mainly solving the technical problems that provide a kind of compressor leaf with blade deformation detection function Wheel, is able to detect the deformation degree of impeller surface blade.

In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of with blade-shaped Become the compressor impeller of detection function, including impeller body, the impeller body include chassis, shaft connecting hole, rotary table entity And wind blade, the lower end surface of the rotary table entity are connected to the upper surface on the chassis, the inside center of the rotary table entity Through the shaft connecting hole is equipped with, the opening of the shaft connecting hole is exported from the upper surface of the rotary table entity, the circle The surrounding of platform entity sets the arcuate flanks of indent, several wind blades, the wind blade are connected in the arcuate flanks Surface be equipped with the shape changing detection slots of several strips, the shape changing detection geosynclinal concave sinks into the side end surface of the wind blade, The shape changing detection slot is each perpendicular to the arcuate flanks, and the inside of the shape changing detection slot, which attaches, is equipped with resistance strain gage, The output end of the resistance strain gage connects Wheatstone bridge circuit, and the output end connection signal of the Wheatstone bridge circuit is put The output end of big circuit, the signal amplification circuit connects A/D conversion circuit, and the output end of the A/D conversion circuit is connected to The output end of the I/O interface of micro-chip processor, the micro-chip processor connects wireless communication module.

It is the Wheatstone bridge circuit, the signal amplification circuit, described in one preferred embodiment of the utility model A/D conversion circuit and the micro-chip processor are welded in one piece of PCB circuit board.

In one preferred embodiment of the utility model, it is recessed inwardly on the bottom face on the chassis equipped with equipment compartment, institute It states and connects a flip on the outside of equipment compartment, the PCB circuit board is located in the equipment compartment.

In one preferred embodiment of the utility model, the bottom face on the flip and the chassis is smooth to be agreed with.

The beneficial effects of the utility model are: the utility model devises a kind of pressure for being able to detect itself blade deformation quantity Contracting machine impeller is connected with several blades on the surface of impeller, and blade is rotated around impeller body and rotated, in high speed rotation During do work with air, suck a large amount of air from impeller center, then released from surrounding by air by centrifugal force, risen Work service life to the effect of compressed air, compressor is mainly determined by the loss of inner body impeller, and the damage of impeller Consumption is concentrated mainly on blade, and most impeller has to stop working since blade deformation is excessive, to the blade of impeller Deformation, which carries out detection, to be helped to grasp the working life of compressor, and inner body is overhauled and substituted in time, avoids influencing Global production.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:

Fig. 1 is the structural representation for one preferred embodiment of compressor impeller that the utility model has blade deformation detection function Figure；

Fig. 2 is the circuit structure for one preferred embodiment of compressor impeller that the utility model has blade deformation detection function Schematic diagram；

The components in the drawings are labeled as follows: 1, impeller body；2, chassis；3, shaft connecting hole；4, rotary table entity；5, it leads Air blade；6, arcuate flanks；7, shape changing detection slot；8, resistance strain gage；9, Wheatstone bridge circuit；10, signal amplification circuit； 11, A/D conversion circuit；12, micro-chip processor；13, wireless communication module；14, PCB circuit board；15, equipment compartment；16, flip.

Specific embodiment

Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Fig. 1 and Fig. 2 are please referred to, the utility model embodiment includes:

A kind of compressor impeller with blade deformation detection function, including impeller body 1, the impeller body 1 include Chassis 2, shaft connecting hole 3, rotary table entity 4 and wind blade 5, the lower end surface of the rotary table entity 4 are connected to the chassis 2 Upper surface, the inside center of the rotary table entity 4, which runs through, is equipped with the shaft connecting hole 3, the opening of the shaft connecting hole 3 from The upper surface of the rotary table entity 4 exports, and the surrounding of the rotary table entity 4 sets the arcuate flanks 6 of indent, the arcuate flanks 6 On be connected with several wind blades 5, the surface of the wind blade 5 is equipped with the shape changing detection slot 7 of several strips, the shape Becoming the side end surface that detection slot 7 is depressed in the wind blade 5, the shape changing detection slot 7 is each perpendicular to the arcuate flanks 6, The inside of the shape changing detection slot 7, which attaches, is equipped with resistance strain gage 8, and the output end of the resistance strain gage 8 connects wheatstone Bridge circuit 9, the output end connection signal amplifying circuit 10 of the Wheatstone bridge circuit 9, the signal amplification circuit 10 Output end connects A/D conversion circuit 11, and the output end of the A/D conversion circuit 11 is connected to the I/O interface of micro-chip processor 12, The output end of the micro-chip processor 12 connects wireless communication module 13.

In addition, the Wheatstone bridge circuit 9, the signal amplification circuit 10, the A/D conversion circuit 11 and described micro- Processing chip 12 is welded in one piece of PCB circuit board 14.

In addition, being recessed inwardly on the bottom face on the chassis 2 equipped with equipment compartment 15, connection one is lifted on the outside of the equipment compartment 15 Lid 16, the PCB circuit board 14 are located in the equipment compartment 15.

Agree in addition, the bottom face on the flip 16 and the chassis 2 is smooth.

The working principle of the utility model is that impeller body 1 includes chassis 2, shaft connecting hole 3, rotary table entity 4 and wind-guiding Blade 5, the lower end surface of rotary table entity 4 are connected to the upper surface on chassis 2, and the inside center of rotary table entity 4, which runs through, is equipped with shaft company Hole 3 is connect, the opening of shaft connecting hole 3 is exported from the upper surface of rotary table entity 4, and the surrounding of rotary table entity 4 sets the curved side of indent Face 6 is connected with several wind blades 5 in arcuate flanks 6.

The surface of wind blade 5 is equipped with the shape changing detection slot 7 of several strips, and shape changing detection slot 7 is depressed in wind blade 5 Side end surface, shape changing detection slot 7 is each perpendicular to arcuate flanks 6, and the inside of shape changing detection slot 7, which attaches, is equipped with resistance strain gage 8, resistance value of the resistance strain gage 8 when being led to itself by external force deformation occurs equal, between internal head and the tail both ends It will change, be concatenated into bridge circuit, the variation of bridge circuit output end electric signal will be caused.

The output end of resistance strain gage 8 connects Wheatstone bridge circuit 9, and the output end of Wheatstone bridge circuit 9 connects letter Number amplifying circuit 10, the effect of Wheatstone bridge circuit 9 are that the voltage that converts electric signal for the resistance value size variation of resistance is big Small variation, to be acquired to it.

The output end of signal amplification circuit 10 connects A/D conversion circuit 11, and the output end of A/D conversion circuit 11 is connected to micro- The I/O interface of chip 12 is handled, the function of A/D conversion circuit 11 is when the analog signal quantitative change of voltage is the number for there was only 1 and 0 Amount, facilitates chip to be acquired and calculate.

The output end of micro-chip processor 12 connects wireless communication module 13, Wheatstone bridge circuit 9, signal amplification circuit 10, A/D conversion circuit 11 and micro-chip processor 12 are welded in one piece of PCB circuit board 14, are concaved on the bottom face on chassis 2 It falls into and is equipped with equipment compartment 15, connect a flip 16 on the outside of equipment compartment 15, PCB circuit board 14 is located in equipment compartment 15.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases The technical field of pass, is also included in the patent protection scope of the utility model.

Claims

1. a kind of compressor impeller with blade deformation detection function, including impeller body, which is characterized in that the impeller sheet Body includes chassis, shaft connecting hole, rotary table entity and wind blade, and the lower end surface of the rotary table entity is connected to the chassis Upper surface, the inside center of the rotary table entity, which runs through, is equipped with the shaft connecting hole, and the opening of the shaft connecting hole is from institute The upper surface export of rotary table entity is stated, the surrounding of the rotary table entity sets the arcuate flanks of indent, connects in the arcuate flanks There are several wind blades, the surface of the wind blade is equipped with the shape changing detection slot of several strips, the shape changing detection slot It is depressed in the side end surface of the wind blade, the shape changing detection slot is each perpendicular to the arcuate flanks, the shape changing detection The inside of slot, which attaches, is equipped with resistance strain gage, and the output end of the resistance strain gage connects Wheatstone bridge circuit, the favour This steps on the output end connection signal amplifying circuit of bridge circuit, and the output end of the signal amplification circuit connects A/D conversion circuit, The output end of the A/D conversion circuit is connected to the I/O interface of micro-chip processor, and the output end of the micro-chip processor connects nothing Line communication module.

2. the compressor impeller according to claim 1 with blade deformation detection function, which is characterized in that the favour this It steps on bridge circuit, the signal amplification circuit, the A/D conversion circuit and the micro-chip processor and is welded on one block of PCB electricity On the plate of road.

3. the compressor impeller according to claim 2 with blade deformation detection function, which is characterized in that the chassis Bottom face on be recessed inwardly equipped with equipment compartment, a flip is connected on the outside of the equipment compartment, the PCB circuit board is located at described set In standby storehouse.

4. the compressor impeller according to claim 3 with blade deformation detection function, which is characterized in that the flip With the bottom face on the chassis is smooth agrees with.