Volute impeller gap detection device of air compressor

Abstract

The utility model relates to an air compressor volute impeller gap detection device, which comprises a bottom plate, a speed chain, a support, an X-axis module, a Z-axis module, a 3D laser line scanner, a side plate, a connecting plate, an upper end plate and a tray jacking mechanism, the speed chain is fixed at the upper end of the bottom plate through the connecting plate, the speed chain conveys a tray, the support is fixed on the bottom plate, and the X-axis module and the Z-axis module are fixed on the bottom plate. The X-axis module is fixed to the support through the upper end plate, the connecting plate is installed on the X-axis module and connected with the Z-axis module, and the 3D laser linear scanner is fixed to the connecting plate through the side plate. According to the air compressor volute impeller gap detection device, 3D laser line scanning is adopted, the measurement precision is more accurate, position correction and servo control pressing and jacking are supported, the pressure sensor is combined, the detection device is more accurate, and product parts are prevented from being damaged. The device can be used for detecting the clearance between the volute and the impeller and the axial movement size of the rotor in a compatible manner, is simple to operate and high in efficiency, and has a wide application range.

Description

Technical Field

[0001] The utility model relates to the field of hydrogen fuel structures, in particular to the field of hydrogen fuel cells, and specifically refers to a device for detecting the clearance between a volute and an impeller of an air compressor. Background Art

[0002] The hydrogen fuel structure is a device that directly converts the chemical energy stored in the fuel and oxidant into electrical energy through electrochemical means. In the hydrogen fuel structure, an air compressor is required to continuously transport hydrogen to accelerate the supply of hydrogen and thus increase power;

[0003] Currently, the demand for hydrogen fuel cell structures is increasing, and with it, the demand for air compressors. This has also led to a surge in demand for air compressor production lines. Testing the clearance between the compressor's volute and impeller is crucial. This clearance testing ensures that the impeller does not collide with the volute during rotation. The current market practice involves placing two tin wires on the impeller, installing the volute, and then testing the dimensions after pressing. This is inefficient and lacks high accuracy. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide an air compressor volute impeller clearance detection device which meets the requirements of high efficiency, high detection accuracy and a relatively wide range of applications.

[0005] In order to achieve the above purpose, the air compressor volute impeller clearance detection device of the present invention is as follows:

[0006] The air compressor volute impeller gap detection device has the following main features: the device includes a base plate, a speed chain, a support, an X-axis module, a Z-axis module, a 3D laser line scanner, a side plate, a connecting plate, an upper end plate, and a tray lifting mechanism; the speed chain is fixed to the upper end of the base plate through the connecting plate; the speed chain conveys the tray; the support is fixed to the base plate; the X-axis module is fixed to the support through the upper end plate; the connecting plate is installed on the X-axis module and connected to the Z-axis module; the 3D laser line scanner is fixed to the connecting plate through the side plate; and the tray lifting mechanism is installed at the lower end of the base plate.

[0007] Preferably, the device also includes a push rod, a lower pressure sensor, a vertical plate, a lower connecting plate and a Z1 module. The lower connecting plate is fixed on the bottom plate, the Z1 module is fixed on the connecting plate, the vertical plate is installed on the Z1 module, the pressure sensor is installed on the vertical plate, and the push rod is fixed on the pressure sensor. When the Z1 module rises, it drives the pressure sensor and the push rod to rise, and the lower connecting plate lifts the measuring axis to its highest end. The 3D laser line scan detects the height of the lower connecting plate before and after it is lifted.

[0008] Preferably, the pallet lifting mechanism includes a positioning pin, a positioning plate, a linear bearing, a plate, a cylinder assembly, a guide rod and a limit ring. The plate is fixed on the base plate. Two sets of cylinder assemblies and four linear bearings are installed on the plate. The guide rod is fitted with the linear bearing. The lower end of the guide rod is installed with a limit ring. The upper end of the guide rod is fixed to the positioning plate. The upper end of the cylinder assembly is connected to the positioning plate. The cylinder assembly extends and retracts up and down to drive the positioning plate to move up and down. The positioning pin is installed on the positioning plate so that the pallet lifting mechanism is positioned with the pallet after lifting.

[0009] Preferably, the cylinder assembly is provided with a magnetic switch, and the magnetic switch senses the upper and lower positions of the cylinder assembly.

[0010] Preferably, the device further comprises a proximity switch, and the proximity switch is connected to the pallet lifting mechanism. After the proximity switch senses that the pallet has reached the working position, the pallet lifting mechanism lifts the pallet to a position.

[0011] Preferably, the device further comprises an auxiliary plate, an upper pressure sensor and a pressure rod, and the auxiliary plate, the upper pressure sensor and the pressure rod are all mounted on the Z-axis module.

[0012] Preferably, the X-axis module includes a servo motor and two encoders, one encoder is connected to the servo motor for communication, and the other encoder is connected to the 3D laser line scan.

[0013] This new air compressor volute and impeller clearance detection device utilizes 3D laser line scanning for more precise measurement accuracy. It supports position correction, servo-controlled downward pressure and upward pressure, and incorporates a pressure sensor for even greater accuracy, preventing damage to components. This device is compatible with detecting volute and impeller clearances, as well as rotor axial play. It offers simple operation, high efficiency, and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an air compressor volute impeller clearance detection device.

[0015] Figure 2 The figure is a side view of the structure of the air compressor volute impeller clearance detection device of the present invention.

[0016] Figure 3 The utility model is a structural schematic diagram of the tray lifting mechanism of the air compressor volute impeller clearance detection device.

[0017] Reference numerals:

[0018] 1 bottom plate

[0019] 2x speed chain

[0020] 3 pallets

[0021] 4 supports

[0022] 5 X-axis module

[0023] 6 Z-axis module

[0024] 7 Auxiliary board

[0025] 8 3D laser line scan

[0026] 9 side panels

[0027] 10 Upper pressure sensor

[0028] 11 pressure rod

[0029] 12 ejector rods

[0030] 13. Pressure sensor

[0031] 14 vertical boards

[0032] 15 connecting plate

[0033] 16 Upper end plate

[0034] 17 Proximity switch

[0035] 18 lower connecting plate

[0036] 19 Pallet lifting mechanism

[0037] 20Z1 module

[0038] 21 positioning pin

[0039] 22 positioning plate

[0040] 23 linear bearings

[0041] 24 boards

[0042] 25 cylinder assembly

[0043] 26 guide rods

[0044] 27 limit ring DETAILED DESCRIPTION

[0045] In order to more clearly describe the technical content of the present invention, further description will be given below in conjunction with specific embodiments.

[0046] The air compressor volute impeller gap detection device of the present invention includes a base plate 1, a speed chain 2, a support 4, an X-axis module 5, a Z-axis module 6, a 3D laser line scanner 8, a side plate 9, a connecting plate 15, an upper end plate 16, and a pallet lifting mechanism 19. The speed chain 2 is fixed to the upper end of the base plate 1 through the connecting plate, the speed chain 2 conveys the pallet 3, the support 4 is fixed on the base plate 1, the X-axis module 5 is fixed to the support 4 through the upper end plate 16, the connecting plate 15 is installed on the X-axis module 5 and connected to the Z-axis module 6, the 3D laser line scanner 8 is fixed to the connecting plate 15 through the side plate 9; the pallet lifting mechanism 19 is installed at the lower end of the base plate 1, and when the pallet 3 is transported to the corresponding workstation of the pallet lifting mechanism 19 through the speed chain 2, the pallet lifting mechanism 19 lifts and positions the pallet 3.

[0047] As a preferred embodiment of the present utility model, the device also includes a push rod 12, a lower pressure sensor 13, a vertical plate 14, a lower connecting plate 18 and a Z1 module 20. The lower connecting plate 18 is fixed on the base plate 1, the Z1 module 20 is fixed on the connecting plate 18, the vertical plate 14 is installed on the Z1 module 20, the pressure sensor 13 is installed on the vertical plate 14, and the push rod 12 is fixed on the pressure sensor 13. When the Z1 module 20 rises, it drives the pressure sensor 13 and the push rod 12 to rise, so that the lower connecting plate 18 lifts the measuring axis to its highest end, and the 3D laser line scan 8 detects the height of the lower connecting plate 18 before and after it is lifted.

[0048] As a preferred embodiment of the present utility model, the pallet lifting mechanism 19 includes a positioning pin 21, a positioning plate 22, a linear bearing 23, a plate 24, a cylinder assembly 25, a guide rod 26 and a limit ring 27. The plate 24 is fixed on the base plate 1. Two sets of cylinder assemblies 25 and four linear bearings 23 are installed on the plate 24. The guide rod 26 is fitted with the linear bearing 23. The lower end of the guide rod 26 is installed with a limit ring 27. The upper end of the guide rod 26 is fixed to the positioning plate 22. The upper end of the cylinder assembly 25 is connected to the positioning plate 22. The cylinder assembly 25 extends and retracts up and down to drive the positioning plate 22 to move up and down. The positioning pin 21 is installed on the positioning plate 22, so that the pallet lifting mechanism 19 is positioned with the pallet 3 after lifting.

[0049] As a preferred embodiment of the present invention, the cylinder assembly 25 is provided with a magnetic switch, and the magnetic switch senses the upper and lower positions of the cylinder assembly 25 .

[0050] As a preferred embodiment of the present invention, the device further comprises a proximity switch 17 , which is connected to a tray lifting mechanism 19 . After the proximity switch 17 senses that the tray 3 has reached its position, the tray lifting mechanism 19 lifts and positions the tray 3 .

[0051] As a preferred embodiment of the present invention, the device further includes an auxiliary plate 7 , an upper pressure sensor 10 and a pressure rod 11 , and the auxiliary plate 7 , the upper pressure sensor 10 and the pressure rod 11 are all mounted on the Z-axis module 6 .

[0052] As a preferred embodiment of the present invention, the X-axis module 5 includes a servo motor and two encoders, one encoder is connected to the servo motor for communication, and the other encoder is connected to the 3D laser line scanner 8.

[0053] In the specific implementation of the present invention, in order to address the above-mentioned deficiencies in the prior art, a servo motor and module are combined with Keyence 3D line scanning to detect the relative clearance between the impeller and the volute, and the axial play clearance of the rotor can be detected, which is easy to operate and has high precision.

[0054] This new system uses 3D laser line scanning to create 3D imaging technology. It scans the height lines of the impeller, the upper reference surface A of the housing, the volute contact coil, and the volute reference surface A1 (A and A1 are the contact surfaces), and calculates the difference. This system can be integrated into production lines, offering high efficiency and accuracy, while also detecting axial clearance movement.

[0055] The device of the utility model comprises a 3D laser line scanner 8, a conveying mechanism, a tray lifting mechanism 19, a transverse movement module, a lifting and pressing mechanism, etc.

[0056] The entire utility model mechanism is basically fixed with bolts and pins, and the speed chain 2 is fixed to the upper end of the base plate 1 through the connecting plate. The speed chain 2 is used to transport the pallet 3 and connect the transfer between the upper and lower workstations. The speed chain 2 is equipped with a stop mechanism; the pallet lifting mechanism 19 is located at the lower end of the base plate 1. Its function is to lift and position the pallet 3 when it is transferred to this workstation through the speed chain 2 to prevent it from moving and ensure its measurement accuracy and consistency; after the proximity switch 17 senses that the pallet 3 is in place, it feedbacks the signal through the PLC structure and interacts with the pallet lifting mechanism 19.

[0057] The test part of the present invention is installed on the upper end of the base plate 1, the support 4 is fixed on the base plate 1, and the X-axis module 5 is fixed on the support 4 through the upper end plate 16. The X-axis module 5 adopts a servo motor, and the structural hole control accuracy is higher. The X-axis module 5 adopts a dual encoder configuration, one communicates with the servo motor in a closed-loop stroke, and the other feeds back signals to the 3D laser line scan 8 to make it 3D imaging.

[0058] The connecting plate 15 is mounted on the X-axis module 5 and connected to the Z-axis module 6. The 3D laser line scanner 8 is fixed to the connecting plate 15 via the side plate 9, allowing it to move precisely in the X-axis direction. The 3D laser line scanner 8 uses the Keyence LJ-X8000 series. Its measurement principle is to diffuse the laser into a line laser through a cylindrical objective lens, which is then projected onto the surface of the target object to form a diffuse reflection. After the reflected light is imaged on the CMOS, the displacement and shape are measured by detecting changes in position and shape. The detection accuracy in the Z-axis direction is ±3μm.

[0059] The Z-axis module 6 is mounted with an auxiliary plate 7, an upper pressure sensor 10, and a pressure rod 11. Its function is to press the Z-axis module 6 down to the lowest end when measuring axial movement, thereby measuring the height of the lowest position of the shaft. The lower connecting plate 18 is fixed to the base plate 1. The Z1 module 20, the vertical plate 14, the lower pressure sensor 13, and the push rod 12 are mounted on the lower connecting plate 18. The Z1 module 20 is fixed to the connecting plate 18, the vertical plate 14 is mounted on the Z1 module 20, the pressure sensor 13 is mounted on the vertical plate 14, and the push rod 12 is fixed on the pressure sensor 13. When the Z1 module 20 rises, it drives the pressure sensor 13 and the push rod 12 to rise, causing them to lift the measuring shaft to its highest end. The 3D laser line scan 8 detects the height of the two, and the difference between them is the amount of movement of the measuring shaft.

[0060] Pallet lifting mechanism 19: Two sets of cylinder assemblies 25 and four linear bearings 23 are installed on the plate 24. The guide rod 26 is fitted with the linear bearing 23. A limit ring 27 is installed at the lower end, and the upper end is fixed to the positioning plate 22. The upper end of the cylinder assembly 25 is connected to the positioning plate 22, and the plate 24 is fixed on the base plate 1. The extension and retraction of the cylinder assembly 25 can make the positioning plate 22 move up and down. The cylinder assembly 25 is equipped with a magnetic switch to sense its up and down position. A positioning pin 21 is installed on the positioning plate 22 to enable the pallet lifting mechanism 19 to be better positioned with the pallet 3 after being lifted.

[0061] The operating steps of the utility model are as follows:

[0062] 1. When the pallet 3 reaches this station through the speed chain 2 (the air compressor has been installed with the impeller), the proximity switch 17 senses that it has reached the specified position and feeds back a signal to the PLC structure, causing the pallet lifting mechanism 19 to lift and position the pallet 3; manually place the volute corresponding to the impeller end on the right side of the pallet tooling, press the start button, and the servo module uses the 3D laser line scan 8 to perform dimensional inspection on both sides of the impeller and the volute. After the data is passed through the PLC structure and soft landing, the gap between the two is automatically calculated.

[0063] 2. The upper pressure shaft presses the rotor down, and the servo module uses a 3D laser line scan to detect the size of the upper end of the rotor. The lower pressure shaft pushes the rotor up, and the servo module uses a 3D laser line scan to detect the size of the upper end of the rotor. The difference between the two is the axial movement of the air compressor rotor.

[0064] 3. After the inspection is completed, the structure will determine whether the results are qualified and whether it needs to be repaired.

[0065] The specific implementation scheme of this embodiment can be found in the relevant descriptions in the above embodiments and will not be repeated here.

[0066] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0067] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is at least two.

[0068] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0069] This new air compressor volute and impeller clearance detection device utilizes 3D laser line scanning for more precise measurement accuracy. It supports position correction, servo-controlled downward pressure and upward pressure, and incorporates a pressure sensor for even greater accuracy, preventing damage to components. This device is compatible with detecting volute and impeller clearances, as well as rotor axial play. It offers simple operation, high efficiency, and a wide range of applications.

[0070] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. An air compressor volute impeller clearance detection device, characterized in that: The device includes a base plate, a speed chain, a support, an X-axis module, a Z-axis module, a 3D laser line scanner, a side plate, a connecting plate, an upper end plate, and a pallet lifting mechanism. The speed chain is fixed to the upper end of the base plate through the connecting plate, the speed chain conveys the pallet, the support is fixed to the base plate, the X-axis module is fixed to the support through the upper end plate, the connecting plate is installed on the X-axis module and connected to the Z-axis module, the 3D laser line scanner is fixed to the connecting plate through the side plate, and the pallet lifting mechanism is installed at the lower end of the base plate.

2. The air compressor volute impeller clearance detection device according to claim 1, characterized in that: The device also includes a push rod, a lower pressure sensor, a vertical plate, a lower connecting plate and a Z1 module. The lower connecting plate is fixed on the bottom plate, the Z1 module is fixed on the connecting plate, the vertical plate is installed on the Z1 module, the pressure sensor is installed on the vertical plate, and the push rod is fixed on the pressure sensor. When the Z1 module rises, it drives the pressure sensor and the push rod to rise, and the lower connecting plate lifts the measuring axis to its highest end. The 3D laser line scan detects the height of the lower connecting plate before and after it is lifted.

3. The air compressor volute impeller clearance detection device according to claim 1, characterized in that: The pallet lifting mechanism includes a positioning pin, a positioning plate, a linear bearing, a plate, a cylinder assembly, a guide rod and a limit ring. The plate is fixed on the base plate. Two sets of cylinder assemblies and four linear bearings are installed on the plate. The guide rod is fitted with the linear bearing. The lower end of the guide rod is installed with a limit ring. The upper end of the guide rod is fixed to the positioning plate. The upper end of the cylinder assembly is connected to the positioning plate. The cylinder assembly extends and retracts up and down to drive the positioning plate to move up and down. The positioning pin is installed on the positioning plate so that the pallet lifting mechanism is positioned with the pallet after lifting.

4. The air compressor volute impeller clearance detection device according to claim 3, characterized in that: The cylinder assembly is provided with a magnetic switch, and the magnetic switch senses the upper and lower positions of the cylinder assembly.

5. The air compressor volute impeller clearance detection device according to claim 1, characterized in that: The device further comprises a proximity switch, which is connected to the tray lifting mechanism. After the proximity switch senses that the tray has reached the working position, the tray lifting mechanism lifts the tray to a position.

6. The air compressor volute impeller clearance detection device according to claim 1, characterized in that: The device further comprises an auxiliary plate, an upper pressure sensor and a pressure rod, and the auxiliary plate, the upper pressure sensor and the pressure rod are all mounted on the Z-axis module.

7. The air compressor volute impeller clearance detection device according to claim 1, characterized in that: The X-axis module includes a servo motor and two encoders, one encoder is connected to the servo motor for communication, and the other encoder is connected to the 3D laser line scan.

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