Detection tool for backward inclined centrifugal fan

Abstract

The utility model relates to a detection tool for a backward-inclined centrifugal fan, the backward-inclined centrifugal fan comprises a motor and an impeller, and the detection tool comprises a sensor mounting rack, a distance sensor and a fan mounting rack. Wherein the fan mounting frame is used for mounting the motor, and the motor and the impeller in driving connection with the motor are both mounted on the fan mounting frame by mounting the motor on the fan mounting frame. In addition, the distance sensor is mounted on the sensor mounting rack. The first distance sensor in the distance sensors is used for detecting the distance between the first distance sensor and the motor in the second direction, the second distance sensor is used for detecting the distance between the second distance sensor and the motor in the first direction, and the first direction, the second direction and the third direction are perpendicular to one another in pairs; the first distance sensor, the second distance sensor and the third distance sensor can detect vibration generated when the impeller rotates in three different directions, so that the detection result is more accurate.

Description

Technical Field

[0001] The present disclosure relates to the field of fan detection, and in particular, to a detection tool for a backward inclined centrifugal fan. Background Art

[0002] The backward-inclined centrifugal fan needs to maintain stable operation during use. Once the vibration generated by the backward-inclined centrifugal fan is large, it will affect the normal operation of the fan. Therefore, before installing the fan on the equipment, the vibration of the fan needs to be tested. The vibration of the fan is usually caused by the unstable rotation of the fan's impeller. Therefore, it is usually necessary to test the stability of the impeller rotation before installing the fan. How to detect the vibration of the impeller more accurately is a technical problem that needs to be solved. Utility Model Content

[0003] The purpose of the present disclosure is to provide a detection tool for a backward inclined centrifugal fan, which can make a more accurate detection of the vibration of the impeller during operation, so as to at least partially solve the above technical problems.

[0004] In order to achieve the above object, the present disclosure provides a detection tool for a backward-inclined centrifugal fan, wherein the backward-inclined centrifugal fan comprises a motor and an impeller, and the detection tool comprises:

[0005] Sensor mounting bracket;

[0006] a distance sensor mounted on the sensor mounting bracket; and

[0007] A fan mounting frame, used for mounting the motor;

[0008] The distance sensor includes a first distance sensor, a second distance sensor and a third distance sensor, the first distance sensor is used to detect the distance between the first distance sensor and the motor in a second direction, the second distance sensor is used to detect the distance between the first distance sensor and the motor in a first direction, and the third distance sensor is used to detect the distance between the first distance sensor and the motor in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] Optionally, the fan mounting frame includes a fan base frame and a fan fixing frame assembly, the fan fixing frame assembly includes a fan mounting beam and a fan fixing member for fixing the motor, the fan fixing member is adjustably arranged on the fan mounting beam along the second direction, and the fan mounting beam is adjustably arranged on the fan base frame along the first direction.

[0010] Optionally, the fan base includes two first beams spaced apart along the second direction, the two first beams extend along the first direction, each of the first beams has a plurality of first strip holes spaced apart along the first direction, the fan mounting beam extends along the second direction, and the two ends of the fan mounting beam are respectively engaged with a first fastener and the first strip hole so that the fan mounting beam is detachably fixed to the first beam, the first fastener is located in the first strip hole and the position of the first fastener relative to the first strip hole is adjustable.

[0011] Optionally, there are two fan mounting beams and they are spaced apart along the first direction, and a plurality of second strip holes are spaced apart along the second direction on the fan mounting beam, and the fan fixing member includes a first bolt and a first nut, the first bolt passes through the second strip hole for connecting to the motor, and the first nut cooperates with the first bolt to detachably fix the first bolt to the fan mounting beam, and the position of the first bolt relative to the second strip hole is adjustable.

[0012] Optionally, the sensor mounting frame includes a sensor base and a sensor fixing frame assembly arranged on the sensor base, the sensor fixing frame assembly includes a first sensor fixing frame assembly, a second sensor fixing frame assembly and a third sensor fixing frame assembly, the first sensor fixing frame assembly, the second sensor fixing frame assembly and the third sensor fixing frame assembly are respectively located in the second direction, the first direction and the third direction of the fan fixing frame assembly, the first sensor fixing frame assembly is used to install the first distance sensor, the second sensor fixing frame assembly is used to install the second distance sensor, and the third sensor fixing frame assembly is used to install the third distance sensor.

[0013] Optionally, the detection tooling includes a second fastener, and the first sensor fixing frame assembly includes a first sensor bracket and a first sensor base, the first sensor base is used to install the first distance sensor, the first sensor base is located on one side of the fan fixing member in the second direction, the first sensor bracket is extended along the third direction and is arranged on the sensor base, and the first sensor bracket is provided with a first through groove extending along the third direction, and the second fastener cooperates with the first through groove, so that the first sensor base can be adjustably arranged on the first sensor bracket along the third direction.

[0014] Optionally, the detection tooling includes a third fastener, the second sensor fixing frame assembly includes a second sensor bracket and a second sensor base, the second sensor base is used to install the second distance sensor, the second sensor base is located on one side of the fan fixing member in the first direction, the second sensor bracket is extended along the third direction and is arranged on the sensor base, the second sensor bracket is provided with a second through groove extending along the third direction, and the third fastener cooperates with the second through groove, so that the second sensor base can be adjustably arranged on the second sensor bracket along the third direction.

[0015] Optionally, the detection tooling includes a fourth fastener, the third sensor fixing frame assembly includes a third sensor bracket and a third sensor base, the third distance sensor is mounted on the third sensor base, the third sensor base is located on one side of the fan fixing member in the third direction, the third sensor bracket is extended along the second direction on the sensor base, the third sensor bracket is provided with a third through groove extending along the second direction, and the fourth fastener cooperates with the third through groove, so that the third sensor base can be adjustably disposed on the third sensor bracket along the second direction.

[0016] Optionally, the detection tool further includes a temperature sensor, which is mounted on the sensor mounting bracket and is used to detect the temperature of the motor.

[0017] Optionally, the distance sensor is configured as an eddy current displacement sensor.

[0018] Through the above technical solution, the motor of the backward-inclined centrifugal fan is installed on the fan mounting frame, so that the motor and impeller of the fan are installed on the fan mounting frame, and the distance sensor is installed on the sensor mounting frame. Among them, the first distance sensor is used to detect the distance between the motor in the second direction, the second sensor is used to detect the distance between the motor in the first direction, and the third sensor is used to detect the distance between the motor in the third direction. The first direction, the second direction and the third direction are perpendicular to each other, so that the vibration generated by the rotation of the impeller can be detected in multiple directions, and the detection is more accurate.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic structural diagram of a detection tool for a backward-inclined centrifugal fan disclosed in an exemplary embodiment of the present disclosure; wherein a motor and an impeller are mounted on a fan mounting frame;

[0022] Figure 2 is a structural schematic diagram of a fan mounting frame disclosed in an exemplary embodiment of the present disclosure having a motor and an impeller mounted thereon;

[0023] Figure 3 yes Figure 2 A detailed enlarged picture of the middle A;

[0024] Figure 4 1 is a schematic diagram of the structure when a sensor is installed on the sensor mounting bracket provided in an exemplary embodiment of the present disclosure.

[0025] Description of Reference Numerals

[0026] 10-fan mounting frame; 11-fan base frame; 111-first beam; 111a-first strip hole; 12-fan fixing frame assembly; 121-fan mounting beam; 121a-second strip hole; 122-fan fixing piece; 122a-first bolt; 122b-first nut; 20-sensor mounting frame; 21-sensor base frame; 211-second beam; 212-third beam; 213-fourth beam; 22-sensor fixing frame assembly; 221-first sensor fixing frame assembly; 2211-first sensor bracket; 2211a-first through slot; 2212-first sensor base; 2 22-second sensor fixing frame assembly; 2221-second sensor bracket; 2221a-second through slot; 2222-second sensor base; 223-third sensor fixing frame assembly; 2231-third sensor bracket; 2231a-third through slot; 2232-third sensor base; 30-distance sensor; 31-first distance sensor; 32-second distance sensor; 33-third distance sensor; 40-impeller assembly; 41-motor; 42-impeller; 50-first fastener; 60-second fastener; 70-third fastener; 80-fourth fastener; 90-temperature sensor. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] In the present disclosure, an XYZ coordinate system is established for the backward inclined centrifugal fan inspection tooling, wherein the X direction is the first direction, the Y direction is the second direction, and the Z direction is the third direction. The direction indicated by the Z-axis arrow is vertically upward, and the opposite direction is vertically downward. Unless otherwise specified, the directional words used, such as "inside and outside", refer to the inside and outside of the outline of the component or structure itself. "First, second" and the like are used to distinguish one element from another, and do not have order and importance.

[0029] like Figures 1 to 4 As shown, the present disclosure provides a detection tool for a backward-inclined centrifugal fan, the backward-inclined centrifugal fan includes a motor 41 and an impeller 42, and the detection tool for the backward-inclined centrifugal fan includes a sensor mounting frame 20, a distance sensor 30, and a fan mounting frame 10. Among them, the fan mounting frame 10 is used to install the motor 41, and the motor 41 is installed on the fan mounting frame 10, so that the motor 41 and the impeller 42 driven and connected to the motor 41 are both installed on the fan mounting frame 10. In addition, the distance sensor 30 is installed on the sensor mounting frame 20. The distance sensor 30 includes a first distance sensor 31, a second distance sensor 32, and a third distance sensor 33. The first distance sensor 31 is used to detect the distance between itself and the motor 41 in the second direction, the second distance sensor 32 is used to detect the distance between itself and the motor 41 in the first direction, and the third distance sensor 33 is used to detect the distance between itself and the motor 41 in the third direction. The first direction, the second direction and the third direction are perpendicular to each other, so that the first distance sensor 31, the second distance sensor 32 and the third distance sensor 33 can detect the vibration generated when the impeller 42 rotates in three different directions, so as to make the detection result more accurate.

[0030] In the above-mentioned embodiment, the sensor mounting frame 20 and the fan mounting frame 10 can both be fixed on the mounting platform, and there is no direct contact between the sensor mounting frame 20 and the fan mounting frame 10 to prevent the fan mounting frame 10 from transmitting vibration to the sensor mounting frame 20 when vibrating, thereby causing inaccurate sensor detection.

[0031] It should be noted that, for ease of description, the impeller 42 and the motor 41 of the backward inclined centrifugal fan can be defined as an impeller assembly 40. The fan mounting frame 10 is first described below. Figures 1 to 3As shown, the fan mounting frame 10 includes a fan base frame 11 and a fan fixing frame assembly 12, the fan fixing frame assembly 12 includes a fan mounting beam 121 and a fan fixing member 122 for fixing the motor 41, the fan fixing member 122 is adjustably arranged on the fan mounting beam 121 along the second direction, so as to be able to adjust the position of the detected impeller assembly 40 in the second direction, in addition, the fan mounting beam 121 is adjustably arranged on the fan base frame 11 along the first direction, so that by adjusting the position of the impeller assembly 40 in the first direction, the position of the impeller assembly 40 on the fan base frame 11 is adjustable along the first direction and the second direction, so that the impeller assembly 40 corresponds to any one of the first distance sensor 31, the second distance sensor 32 and the third distance sensor 33, so that the first distance sensor 31, the second distance sensor 32 and the third distance sensor 33 can detect the impeller assembly 40.

[0032] In some embodiments, Figures 1 to 3 As shown, the fan base 11 includes two first beams 111 spaced apart along the second direction, the two first beams 111 extend along the first direction, each first beam 111 is provided with a plurality of first strip holes 111a spaced apart along the first direction, a fan mounting beam 121 extends along the second direction, and both ends of the fan mounting beam 121 are respectively engaged with the first fastener 50 and the first strip hole 111a so that the fan mounting beam 121 is detachably fixed on the first beam 111, the first fastener 50 is located in the first strip hole 111a and the position of the first fastener 50 relative to the first strip hole 111a is adjustable.

[0033] In the above-mentioned embodiment, the fan base frame 11 can be constructed as a cubic frame, the two first beams 111 are two sides of the cubic frame, the first strip hole 111a on the first beam 111 is also extended along the first direction, the two ends of the fan mounting beam 121 are respectively overlapped on the two first beams 111, and the two ends of the fan mounting beam 121 are respectively matched by the first fastener 50 and the first strip hole 111a, so that the fan mounting beam 121 can be detachably fixed on the first beam 111 through the first fastener 50 and the first strip hole 111a. Specifically, the first fastener 50 can be constructed as a bolt and a nut, and the fan mounting beam 121 can be detachably fixedly connected to the first beam 111 through the matching of the bolt, the nut and the first strip hole 111a. Among them, the bolt of the first fastener 50 passes through the fan mounting beam 121 and the first strip hole 111a and then matches with the nut to fix the fan mounting beam 121 on the first beam 111. By changing the position of the bolt in the first fastener 50 in the first strip hole 111a, the installation position of the fan mounting beam 121 on the first beam 111 can be adjusted. The bolt and nut of the first fastener 50 can cooperate with different first strip holes 111a on the first beam 111, so that the installation position of the fan mounting beam 121 on the first beam 111 has a larger adjustable range, thereby making the positions of the motor 41 and the impeller 42 installed on the fan mounting beam 121 have a larger adjustable range.

[0034] In some embodiments, the fan fixing member 122 can be arbitrarily constructed according to different connection forms with the motor 41. For example, when the motor 41 shell of the backward-inclined centrifugal fan has a plurality of threaded holes for connecting with external connecting members, the fan fixing member 122 includes a first bolt 122a and a first nut 122b. The first bolt 122a of the fan fixing member 122 can be threadedly connected with the threaded hole on the motor 41 to fix the fan to the first bolt 122a. In addition, a plurality of second strip holes 121a spaced apart along the second direction can be provided on the fan mounting beam 121. The first bolt 122a is threadedly connected with the motor 41 after passing through the second strip holes 121a. The first bolt 122a cooperates with the first nut 122b to detachably fix the first bolt 122a on the fan mounting beam 121. The position of the first bolt 122a relative to the second strip hole 121a is adjustable, so that the position of the fan fixing member 122 relative to the fan mounting beam 121 in the second direction is adjustable.

[0035] In the above-mentioned embodiment, after the first bolt 122a of the fan fixing member 122 passes through the second strip hole 121a on the fan mounting beam 121, the first nut 122b can be firstly sleeved on the first bolt 122a, and then the first bolt 122a is threadedly connected with the threaded hole on the motor 41 and tightened, and then the first nut 122b located between the motor 41 and the fan mounting beam 121 is tightened to install the impeller assembly 40 consisting of the motor 41 and the impeller 42 on the fan mounting beam 121.

[0036] In addition, the number of fan mounting beams 121 can be set according to the different positions of the arrangement of the threaded holes on the motor 41. For example, when the threaded holes on the motor 41 are arranged in two rows at intervals along the first direction, and each row has two threaded holes arranged at intervals along the second direction, the number of fan mounting beams 121 can be two arranged at intervals along the first direction. The fan fixing member 122 can include four sets of first bolts 122a and first nuts 122b. Two sets of first bolts 122a and first nuts 122b are arranged on each fan mounting beam 121. The first bolts 122a in each set are matched with a threaded hole of the motor 41, and then matched with the first nuts 122b to be fixed on the fan mounting beam 121. The motor 41 is mounted on the fan mounting beam 121 by the four sets of first bolts 122a and first nuts 122b in the fan fixing member 122. The position of the first bolt 122a relative to the second strip hole 121a is adjustable, so that the mounting position of the motor 41 is adjustable in the second direction of the fan mounting beam 121.

[0037] The sensor mounting bracket 20 is described below. Figure 1 and Figure 4As shown, in some embodiments, the sensor mounting frame 20 includes a sensor base frame 21 and a sensor fixing frame assembly 22 disposed on the sensor base frame 21, and the sensor fixing frame assembly 22 includes a first sensor fixing frame assembly 221, a first sensor fixing frame assembly 222, and the third sensor fixing frame assembly 223, wherein the first sensor fixing frame assembly 221 is located in the second direction of the fan fixing frame assembly 12, the second sensor fixing frame assembly 222 is located in the first direction of the fan fixing frame assembly 12, and the third sensor fixing frame assembly 223 is located in the third direction of the fan fixing frame assembly 12, the first sensor fixing frame assembly 221 is used to install the first distance sensor 31, the first sensor fixing frame assembly 222 is used to install the second distance sensor 32, and the third sensor fixing frame assembly 223 is used to install the third distance sensor 33. So that the first distance sensor 31 can be located in the second direction of the fan fixing frame assembly 12, the second distance sensor 32 can be located in the first direction of the fan fixing frame assembly 12, and the third distance sensor 33 can be located in the third direction of the fan fixing frame assembly 12. By detecting the distance between it and the motor 41 in the second direction through the first distance sensor 31, detecting the distance between it and the motor 41 in the first direction through the second distance sensor 32, and detecting the distance between it and the motor 41 in the third direction through the third distance sensor 33, it is possible to detect the vibration of the motor 41 in three directions when the impeller 42 rotates, so as to more accurately detect the vibration of the motor 41 and the impeller 42 when the impeller 42 rotates.

[0038] In some embodiments, the detection tooling includes a second fastener 60, the first sensor fixing frame assembly 221 includes a first sensor bracket 2211 and a first sensor base 2212, the first sensor base 2212 is used to install the first distance sensor 31, and the first sensor base 2212 is located on one side of the fan fixing member 122 in the second direction, so that the first distance sensor 31 installed on the first sensor base 2212 can be used to detect the distance in the second direction between it and the motor 41 installed on the fan mounting beam 121 through the fan fixing member 122. In addition, the first sensor bracket 2211 is extended along the third direction and is arranged on the sensor base 21. Both ends of the first sensor bracket 2211 can be welded to the sensor base 21. The first sensor bracket 2211 is provided with a first through groove 2211a extending along the third direction. The second fastener 60 cooperates with the first through groove 2211a so that the first sensor base 2212 can be adjustably arranged on the first sensor bracket 2211 along the third direction, so that the first distance sensor 31 arranged on the first sensor base 2212 can correspond to the motor 41 of the impeller assembly 40 to be detected, thereby facilitating the probe of the first distance sensor 31 to correspond to the motor 41 of the impeller assembly 40, and facilitating the first distance sensor 31 to detect the distance between itself and the motor 41 of the impeller assembly 40 in the second direction.

[0039] In some embodiments, the second fastener 60 includes a bolt and a nut, and the first sensor base 2212 is detachably mounted on the first sensor bracket 2211 by the bolt and the nut. Specifically, in one embodiment, the bolt of the second fastener 60 can be passed through the first through slot 2211a and the first sensor base 2212, and then cooperated with the nut to detachably fix the first sensor base 2212 on the first sensor bracket 2211, and the installation position of the first sensor base 2212 is adjustable along the third direction in the first through slot 2211a, which will not be repeated here.

[0040] In the above-mentioned embodiment, the first distance sensor 31 can be installed on the first sensor base 2212 in any form. For example, the first distance sensor 31 can be installed on the first sensor base 2212 by bolts and nuts, which is not limited here.

[0041] In some embodiments, the detection tooling includes a third fastener 70, the second sensor fixing frame assembly 222 includes a second sensor bracket 2221 and a second sensor base 2222, the second sensor base 2222 is used to install the second distance sensor 32, and the second sensor base 2222 is located on one side of the fan fixing member 122 in the first direction, so that the second distance sensor 32 installed on the second sensor base 2222 can be used to detect the distance in the first direction between it and the motor 41 installed on the fan mounting beam 121 through the fan fixing member 122. In addition, the second sensor bracket 2221 is extended along the third direction and is arranged on the sensor base 21. Both ends of the second sensor bracket 2221 can be welded to the sensor base 21. The second sensor bracket 2221 is provided with a second through groove 2221a extending along the third direction. The third fastener 70 cooperates with the second through groove 2221a so that the second sensor base 2222 can be adjustably arranged on the second sensor bracket 2221 along the third direction, so that the second distance sensor 32 arranged on the second sensor base 2222 can correspond to the motor 41 of the impeller assembly 40 to be detected, thereby facilitating the probe of the second distance sensor 32 to correspond to the motor 41 of the impeller assembly 40, and facilitating the second distance sensor 32 to detect the distance between itself and the motor 41 of the impeller assembly 40 in the first direction.

[0042] In some embodiments, the third fastener 70 includes a bolt and a nut, and the second sensor base 2222 is detachably mounted on the second sensor bracket 2221 by the bolt and the nut. Specifically, in one embodiment, the bolt of the third fastener 70 can be passed through the second through slot 2221a and the second sensor base 2222, and then cooperated with the nut to detachably fix the second sensor base 2222 on the second sensor bracket 2221, and the installation position of the second sensor base 2222 is adjustable along the third direction in the second through slot 2221a, which will not be repeated here.

[0043] In the above-mentioned embodiment, the second distance sensor 32 can be installed on the second distance sensor 32 base in any form. For example, the second distance sensor 32 can be installed on the second sensor base 2222 by bolts and nuts, which is not limited here.

[0044] In some embodiments, the detection tooling includes a fourth fastener 80, the third sensor fixing frame assembly 223 includes a third sensor bracket 2231 and a third sensor base 2232, the second sensor base 2222 is used to install a third distance sensor 33, and the third sensor base 2232 is located on one side of the fan fixing member 122 in the third direction, so that the third distance sensor 33 installed on the third sensor base 2232 can be used to detect the distance in the third direction between it and the motor 41 installed on the fan mounting beam 121 through the fan fixing member 122. In addition, the third sensor bracket 2231 is extended along the second direction and is arranged on the sensor base 21. Both ends of the third sensor bracket 2231 can be welded to the sensor base 21. The third sensor bracket 2231 is provided with a third through groove 2231a extending along the second direction. The fourth fastener 80 cooperates with the third through groove 2231a so that the third sensor base 2232 can be adjustably arranged on the third sensor bracket 2231 along the second direction, so that the third distance sensor 33 arranged on the third sensor base 2232 can correspond to the motor 41 of the impeller assembly 40 to be detected, thereby facilitating the probe of the third distance sensor 33 to correspond to the motor 41 of the impeller assembly 40, and facilitating the third distance sensor 33 to detect the distance between itself and the motor 41 of the impeller assembly 40 in the second direction.

[0045] In some embodiments, the third fastener 70 includes a bolt and a nut, and the third sensor base 2232 is detachably mounted on the third sensor bracket 2231 by the bolt and the nut. Specifically, in one embodiment, the bolt of the third fastener 70 can be passed through the third through slot 2231a and the third sensor base 2232, and then matched with the nut to detachably fix the third sensor base 2232 on the third sensor bracket 2231, and the installation position of the third sensor base 2232 is adjustable along the second direction in the third through slot 2231a, which will not be repeated here.

[0046] In the above-mentioned embodiment, the third distance sensor 33 can be installed on the third sensor base 2232 in any form. For example, the third distance sensor 33 can be installed on the third sensor base 2232 by bolts and nuts, which is not limited here.

[0047] In some embodiments, the detection tool further includes a temperature sensor 90, which is mounted on the sensor mounting bracket 20 and is used to detect the operating temperature of the motor 41. Specifically, the temperature sensor 90 can be arranged on the third sensor base 2232, so that the temperature sensor 90 can correspond to the motor 41 of the impeller assembly 40, so that the probe of the temperature sensor 90 can detect the operating temperature of the motor 41.

[0048] It should be noted that, in some embodiments, the distance sensor 30 can be constructed in any appropriate form. For example, the distance sensor 30 can be constructed as an eddy current displacement sensor, that is, the first distance sensor 31, the second distance sensor 32 and the third distance sensor 33 can all be constructed as eddy current displacement sensors.

[0049] In other possible implementations, the distance sensor 30 may also be configured as a millimeter wave radar, that is, the first distance sensor 31 , the second distance sensor 32 , and the third distance sensor 33 may also be configured as millimeter wave radars, which is not limited here.

[0050] The overall structure of the inspection tooling for the backward-inclined centrifugal fan is briefly described below in conjunction with the accompanying drawings. Figures 1 to 4As shown, the fan base 11 and the sensor base 21 can both be constructed as a cubic frame, the fan base 11 is located in the area surrounded by the sensor base 21, the fan base 11 and the sensor base 21 can both be installed on the mounting platform, the fan base 11 and the sensor base 21 are not in contact, two fan mounting beams 121 are adjustably arranged on the first cross beam 111 in a first direction through a first fastener 50, and the motor 41 of the impeller assembly 40 is adjustably arranged on the fan mounting beam 121 in a second direction through a fan fixing piece 122. The sensor base 21 includes two second beams 211 located on one side of the fan fixing part 122 in the second direction and spaced apart along the third direction. The two second beams 211 extend along the first direction. The two ends of the first sensor bracket 2211 are respectively welded to the two second beams 211. The first sensor base 2212 is adjustably mounted on the first sensor bracket 2211 through a second fastener 60. The first distance sensor 31 is mounted on the first sensor base 2212 for detecting the distance between the first distance sensor 31 itself and the motor 41 in the second direction. The sensor base 21 also includes a third beam 212 disposed at the top of the sensor base 21, that is, on one side of the fan fixing part 122 in the third direction, which is spaced apart from the second beam 211 in the second direction. The third beam 212 is extended in the first direction. The two ends of the third sensor bracket 2231 can be welded to the second beam 211 and the third beam 212 respectively. The third sensor base 2232 is adjustably disposed on the third sensor base 2232 in the second direction through the fourth fastener 80. The third distance sensor 33 is installed on the third sensor base 2232. The third distance sensor 33 is used to detect the distance between itself and the motor 41 in the third direction. The temperature sensor 90 can also be installed on the third sensor base 2232 to detect whether the operating temperature of the motor 41 is normal. The sensor base also includes two fourth beams 213 spaced apart in the third direction. The two fourth beams 213 are extended in the second direction. The two fourth beams 213 are located on one side of the fan fixing part 122 in the first direction. The two ends of the second sensor bracket 2221 are welded to the fourth crossbeam 213, and the second sensor base 2222 is adjustably mounted on the second sensor base 2222 along the third direction through the third fastener 70. The second sensor base 2222 is provided with a second distance sensor 32 for detecting the distance between the second sensor itself and the motor 41 in the first direction. The heating of the motor 41 when the impeller 42 rotates can be observed and recorded by observing the reading of the temperature sensor 90. The vibration of the motor 41 in three directions when the impeller 42 rotates can be observed by observing the readings of the three distance sensors 30 in real time to determine whether the vibration of the impeller 42 when rotating meets the requirements.Of course, the three distance sensors 30 and the temperature sensor can also be connected to a computer to record the data of each sensor, and the vibration and temperature data recorded on the computer can be analyzed to determine whether the tested motor 41 and impeller 42 are qualified.

[0051] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0053] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A detection tool for a backward-inclined centrifugal fan, the backward-inclined centrifugal fan comprising a motor and an impeller, characterized in that: The detection tooling comprises: Sensor mounting bracket; a distance sensor mounted on the sensor mounting bracket; and A fan mounting frame, used for mounting the motor; The distance sensor includes a first distance sensor, a second distance sensor and a third distance sensor, the first distance sensor is used to detect the distance between the first distance sensor and the motor in a second direction, the second distance sensor is used to detect the distance between the first distance sensor and the motor in a first direction, and the third distance sensor is used to detect the distance between the first distance sensor and the motor in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The detection tooling according to claim 1, characterized in that: The fan mounting frame includes a fan base frame and a fan fixing frame assembly, the fan fixing frame assembly includes a fan mounting beam and a fan fixing member for fixing the motor, the fan fixing member is adjustably arranged on the fan mounting beam along the second direction, and the fan mounting beam is adjustably arranged on the fan base frame along the first direction.

3. The detection tooling according to claim 2, characterized in that: The fan base frame includes two first beams spaced apart along the second direction, the two first beams extend along the first direction, each of the first beams is provided with a plurality of first strip holes spaced apart along the first direction, the fan mounting beam extends along the second direction, and the two ends of the fan mounting beam are respectively fixed to the first beam detachably by cooperation of a first fastener and the first strip hole, the first fastener is located in the first strip hole and the position of the first fastener relative to the first strip hole is adjustable.

4. The detection tooling according to claim 3, characterized in that: There are two fan mounting beams and they are spaced apart along the first direction. A plurality of second strip holes are spaced apart along the second direction on the fan mounting beam. The fan fixing member comprises a first bolt and a first nut. The first bolt passes through the second strip hole for connection with the motor. The first nut cooperates with the first bolt to detachably fix the first bolt on the fan mounting beam. The position of the first bolt relative to the second strip hole is adjustable.

5. The detection tooling according to claim 2, characterized in that: The sensor mounting frame includes a sensor base and a sensor fixing frame assembly arranged on the sensor base, the sensor fixing frame assembly includes a first sensor fixing frame assembly, a second sensor fixing frame assembly and a third sensor fixing frame assembly, the first sensor fixing frame assembly, the second sensor fixing frame assembly and the third sensor fixing frame assembly are respectively located in the second direction, the first direction and the third direction of the fan fixing frame assembly, the first sensor fixing frame assembly is used to install the first distance sensor, the second sensor fixing frame assembly is used to install the second distance sensor, and the third sensor fixing frame assembly is used to install the third distance sensor.

6. The detection tooling according to claim 5, characterized in that: The detection tooling includes a second fastener, and the first sensor fixing frame assembly includes a first sensor bracket and a first sensor base, the first sensor base is used to install the first distance sensor, the first sensor base is located on one side of the fan fixing member in the second direction, the first sensor bracket is extended along the third direction and is arranged on the sensor base, and the first sensor bracket is provided with a first through groove extending along the third direction, and the second fastener cooperates with the first through groove, so that the first sensor base can be adjustably arranged on the first sensor bracket along the third direction.

7. The detection tooling according to claim 5, characterized in that: The detection tooling includes a third fastener, and the second sensor fixing frame assembly includes a second sensor bracket and a second sensor base, the second sensor base is used to install the second distance sensor, the second sensor base is located on one side of the fan fixing member in the first direction, the second sensor bracket is extended along the third direction and is arranged on the sensor base, and the second sensor bracket is provided with a second through groove extending along the third direction, and the third fastener cooperates with the second through groove, so that the second sensor base can be adjustably arranged on the second sensor bracket along the third direction.

8. The detection tooling according to claim 5, characterized in that: The detection tooling includes a fourth fastener, and the third sensor fixing frame assembly includes a third sensor bracket and a third sensor base, the third distance sensor is mounted on the third sensor base, and the third sensor base is located on one side of the fan fixing member in the third direction, the third sensor bracket is extended along the second direction on the sensor base, and the third sensor bracket is provided with a third through groove extending along the second direction, and the fourth fastener cooperates with the third through groove, so that the third sensor base can be adjustably arranged on the third sensor bracket along the second direction.

9. The detection tooling according to claim 1, characterized in that: The detection tool also includes a temperature sensor, which is mounted on the sensor mounting frame and is used to detect the temperature of the motor.

10. The detection tool according to any one of claims 1 to 9, characterized in that: The distance sensor is configured as an eddy current displacement sensor.

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