CN107882765B - Centrifugal fan test fixture - Google Patents
Centrifugal fan test fixture Download PDFInfo
- Publication number
- CN107882765B CN107882765B CN201711341642.8A CN201711341642A CN107882765B CN 107882765 B CN107882765 B CN 107882765B CN 201711341642 A CN201711341642 A CN 201711341642A CN 107882765 B CN107882765 B CN 107882765B
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000003584 silencer Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal fan test fixture, which comprises a base (1), a fan mounting seat (2) and an air outlet assembly, wherein the fan mounting seat is arranged on the base, the fan mounting seat is fixed on the base and is used for fixedly mounting a motor (41) of a fan (4), the air outlet assembly is arranged beside the fan mounting seat and is used for supporting an air outlet connected with the fan, the air outlet assembly comprises a supporting device (5), a seat plate (6) and an air pipe (7), the supporting device is arranged on the base and is used for supporting the seat plate, a connecting port (61) for connecting the air pipe with an air outlet of the fan is arranged on the seat plate, an air inlet of the air pipe is connected with the connecting port of the seat plate, an air quantity adjusting door I (71) for adjusting air quantity of air is arranged at the air outlet of the air pipe, and the height of the supporting device is adjustable, so that the centrifugal fan test fixture is suitable for fans with different sizes. The fan test tool disclosed by the invention is scientific in design, reasonable in layout, compact in structure, capable of truly simulating the operation of a fan and high in universality.
Description
Technical Field
The invention relates to fan test equipment, in particular to a centrifugal fan test tool.
Background
The centrifugal fan (fan for short in the application) generally needs to perform routine performance inspection before leaving the factory to ensure product quality, at present, different test pipelines are temporarily erected in the test process of the centrifugal fan to simulate different fan operation conditions (flow, wind pressure and the like) so as to perform fan test, and because the test pipelines are generally formed by connecting a plurality of sections (the device pipelines specified in the standard air duct performance test for industrial ventilator of GB/T1236-2007), the pipelines are longer, the erection is time-consuming and laborious, the labor intensity of people is increased, the working efficiency is reduced, the types of the working conditions which can be generally tested are limited (limited by the number and the types of the pipelines), and the reality of the operation conditions of the simulated fan is difficult to grasp. When the whole test device and the products are lifted and placed, the large and heavy test pipeline occupies a large space, and the frame is generally high and is very inconvenient to carry. Therefore, there is a need in the art for a systematic, simple, convenient and versatile test fixture to solve this problem.
Disclosure of Invention
The invention aims to provide a centrifugal fan test tool for solving the problems in the background technology.
In order to achieve the above purpose, the invention provides a centrifugal fan test fixture, which comprises a base 1, a fan mounting seat 2 and an air outlet assembly, wherein the fan mounting seat 2 and the air outlet assembly are arranged on the base, the fan mounting seat is fixed on the base and is used for fixedly mounting a motor 41 of a fan 4, the air outlet assembly is arranged beside the fan mounting seat and is used for supporting an air outlet connected with the fan, the air outlet assembly comprises a supporting device 5, a seat board 6 and an air pipe 7, the supporting device is arranged on the base and is used for supporting the seat board, a connecting port 61 for connecting the air pipe with an air outlet of the fan is arranged on the seat board, an air inlet of the air pipe is connected with a connecting port of the seat board, an air quantity adjusting door 71 for adjusting air quantity of the air pipe is arranged at the air outlet, and the height of the supporting device is adjustable, so that the height of the seat board is adjustable, and the centrifugal fan test fixture is suitable for fans with different sizes.
The supporting device comprises four supporting rods 51 distributed at four corners below the seat plate, each supporting rod comprises a first screw rod 511, a second screw rod 512 and a threaded sleeve 513, one end of each screw rod is connected with the base, the other end of each screw rod is provided with external threads, one end of each second screw rod is connected with the seat plate, the other end of each screw rod is provided with external threads, the threaded sleeve is provided with internal threads, two ends of the internal threads of the threaded sleeve are respectively screwed with the external threads of the first screw rod and the external threads of the second screw rod, and the threaded sleeve is used for adjusting and limiting the relative position between the first screw rod and the second screw rod so as to realize adjustment and fixation of the height of the seat plate.
Further, the supporting device further comprises a first locking nut 514 and a second locking nut 515, the first locking nut is screwed on an external thread at one end of a screw rod connecting screw sleeve, the second locking nut is screwed on an external thread at one end of a screw rod connecting screw sleeve, and the first locking nut and the second locking nut are used for locking and limiting the positions of the screw rod relative to the first screw rod and the second screw rod so as to prevent the height of the seat plate from changing after the seat plate is adjusted.
Preferably, one end of the first screw rod, which is used for being connected with the base, is provided with external threads, and the end of the first screw rod is connected with the base through threads.
Preferably, one end of the second screw rod is used for connecting the seat board, a connecting seat 516 with a hole is arranged, a screw 517 is arranged in the hole of the connecting seat in a penetrating way, a screw hole 62 matched with the screw is arranged on the seat board, and the second screw rod is connected with the seat board through the screw.
Further, a T-shaped groove 22 is formed in the top plate 21 of the fan mounting seat, a T-shaped bolt 23 for fixedly connecting with the motor base of the centrifugal fan is embedded in the T-shaped groove, and the T-shaped bolt can slide in the T-shaped groove to change positions, so that the fan mounting seat is suitable for fans with more sizes and specifications.
Further, a plurality of kidney-shaped holes 711 are formed in the edge of the first air volume adjusting door, an air outlet of the air pipe is connected with the first air volume adjusting door through bolts penetrating through the kidney-shaped holes, the position of the first air volume adjusting door is adjusted through the positions of the adjusting bolts in the kidney-shaped holes, and then the flow of the fan is adjusted.
Further, the air outlet assembly further comprises a muffler 3, an air inlet of the muffler is connected with an air outlet of the air pipe, and an air outlet of the muffler is provided with an air quantity adjusting door II 31 for adjusting air outlet flow.
Preferably, the muffler is of a horn-shaped structure, wherein the air inlet is a small opening end, the air outlet is a large opening end, the air outlet of the muffler is divided into a plurality of small openings 32, the air quantity adjusting door comprises a plurality of small doors 311 which are in one-to-one correspondence with the small openings, and each small opening is provided with a small door.
Preferably, the inner wall of the muffler is provided with a sound absorbing layer made of glass fiber materials.
Preferably, the fan mount pad on the base is two, and the air outlet subassembly is two sets of, and wherein two fan mount pads are located intermediate position, and two sets of air outlet subassemblies are located two fan mount pad both sides respectively, and the specification of two fan mount pads can be set to differently to the fan of adaptation multiple specification and dimension improves the commonality.
The invention has at least the following beneficial effects:
the fan test tool is scientific in design, reasonable in layout and compact in structure, the air flow rate is regulated by utilizing the first air quantity regulating door arranged at the air outlet of the air pipe, the purpose of simulating different air pressures and working conditions is achieved, the operation working conditions of the fan can be simulated truly, the trouble of installing various pipelines is avoided, the fan test and the installation are convenient, the labor intensity of workers is reduced, and the occupied space is saved while the working efficiency is improved.
The fan test tool has strong universality, the height of the seat plate is adjustable, the fan mounting seat is connected with the fan motor by adopting a T-shaped groove and a T-shaped bolt, and the fan test tool can be suitable for fans with various specifications and has wide application range.
According to the fan test tool, the muffler is connected to the air outlet of the air pipe, the air outlet of the muffler is provided with the second air quantity adjusting door, the first air quantity adjusting door is matched for adjusting the flow and the air pressure of the fan, different working conditions are simulated, the running noise of the fan can be reduced, and the working environment is improved.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a block diagram of a centrifugal fan test fixture in accordance with a preferred embodiment of the present invention;
FIG. 2 is a diagram of the test results of a centrifugal fan test fixture (with a fan installed) according to a preferred embodiment of the present invention;
FIG. 3 is a side view of a fan mount according to a preferred embodiment of the present invention;
FIG. 4 (including FIGS. 4.1-4.3) is a block diagram of an air duct in accordance with a preferred embodiment of the present invention;
fig. 4.1 is a front view of an air duct according to a preferred embodiment of the present invention;
FIG. 4.2 is a side view of the ductwork of the preferred embodiment of the present invention;
FIG. 4.3 is a top view of a ductwork in accordance with a preferred embodiment of the present invention;
fig. 5 is a front view of the support bar of the preferred embodiment of the present invention.
The fan comprises a 1-base, a 2-fan mounting seat, a 21-top plate, a 22-T-shaped groove, a 23-T-shaped bolt, a 3-silencer, a 31-air volume adjusting door II, a 311-small door, a 32-small opening, a 4-fan, a 41-motor, a 5-supporting device, a 51-supporting rod, a 511-screw I, a 512-screw II, a 513-screw sleeve, a 514-locking nut I, a 515-locking nut II, a 516-connecting seat, 517-screws, a 6-seat plate, a 61-connecting opening, 62-screw holes, 7-air pipes, a 71-air volume adjusting door I and 711-kidney-shaped holes.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Referring to fig. 1 to 5, the centrifugal fan test fixture comprises a base 1, a fan mounting seat 2 and an air outlet component, wherein the fan mounting seat 2 and the air outlet component are arranged on the base, the fan mounting seat is fixed on the base and is used for fixedly mounting a motor 41 of a fan 4, the air outlet component is arranged beside the fan mounting seat and is used for supporting an air outlet connected with the fan, the air outlet component comprises a supporting device 5, a seat plate 6 and an air pipe 7, the supporting device is arranged on the base and is used for supporting the seat plate, a connecting port 61 used for connecting the air pipe with a fan air outlet flange is arranged on the seat plate, an air inlet of the air pipe is connected with the connecting port of the seat plate, an air outlet of the air pipe is provided with an air quantity adjusting door 71 used for adjusting air outlet flow, and the height of the seat plate is adjustable, so that the height of the seat plate is adjustable and the centrifugal fan with different sizes is suitable for fans.
The supporting device comprises four supporting rods 51 distributed at four corners below the seat plate, each supporting rod comprises a first screw 511, a second screw 512 and a threaded sleeve 513, one end of the screw is connected with the base, the other end of the first screw is provided with external threads, one end of the second screw is connected with the seat plate, the other end of the second screw is provided with external threads, the threaded sleeve is provided with internal threads, two ends of the internal threads of the threaded sleeve are respectively screwed with the external threads of the first screw and the external threads of the second screw, and the threaded sleeve is used for adjusting and limiting the relative position between the first screw and the second screw so as to adjust and fix the height of the seat plate.
In this embodiment, the supporting device further includes a first lock nut 514 and a second lock nut 515, where the first lock nut is screwed on an external thread at one end of a screw rod connected to the screw sleeve, the second lock nut is screwed on an external thread at one end of a screw rod connected to the screw sleeve, and the first lock nut and the second lock nut are used to lock and limit the positions of the screw sleeve relative to the first screw rod and the second screw rod, so as to prevent the seat plate from changing in height after the seat plate is adjusted.
In this embodiment, one end of the first screw rod, which is used for connecting with the base, is provided with external threads, the end of the first screw rod is connected with the base through threads, and a plurality of sets of screw holes matched with the end of the first screw rod can be arranged on the base so as to adapt to fans with more specifications.
In this embodiment, one end of the second screw rod is used for connecting the seat board, a connecting seat 516 with a hole is provided, a screw 517 is arranged in the hole of the connecting seat in a penetrating way, a screw hole 62 matched with the screw is provided on the seat board, and the second screw rod is connected with the seat board through the screw.
In this embodiment, the holes on each connecting seat are three in central symmetry, and the corresponding screws 517 and screw holes 62 are also three in central symmetry.
In this embodiment, two parallel T-shaped grooves 22 are provided on the top plate 21 of the fan mounting seat, and T-shaped bolts 23 for fixedly connecting the motor base of the centrifugal fan are embedded in the T-shaped grooves, and the T-shaped bolts can slide in the T-shaped grooves to change positions, so as to adapt to fans with more dimensions. On the other hand, the T-shaped bolt can enable the fan to be still firmly arranged on the mounting seat under strong vibration.
In this embodiment, a plurality of kidney-shaped holes 711 are formed in the edge of the first air volume adjusting door, and an air outlet of the air pipe is connected with the first air volume adjusting door through bolts penetrating through the kidney-shaped holes, and the first air volume adjusting door is adjusted through adjusting the positions of the bolts in the kidney-shaped holes, so that the flow of the fan is adjusted.
In this embodiment, the air outlet assembly further includes a muffler 3, an air inlet of the muffler is connected with an air outlet of the air pipe, and an air outlet of the muffler is provided with an air quantity adjusting door two 31 for adjusting air outlet flow.
In this embodiment, the muffler is in a horn-shaped structure, wherein the air inlet is a small opening end, the air outlet is a large opening end, the air outlet of the muffler is divided into four small openings 32 with the same size, the two air quantity adjusting doors comprise a plurality of small doors 311 which are in one-to-one correspondence with the small openings, and each small opening is provided with one small door. The air outlet is arranged into a plurality of small doors, so that the flow of the fan can be adjusted more finely, and the running power of the fan with different sizes can be realized.
Preferably, the inner wall of the muffler is provided with a sound absorbing layer made of glass fiber material.
Preferably, the fan mount pad on the base is two, and the air outlet subassembly is two sets of, and wherein two fan mount pads are located intermediate position, and two sets of air outlet subassemblies are located two fan mount pad both sides respectively, and the specification of two fan mount pads can be set to differently to the fan of adaptation multiple specification size improves the commonality.
The implementation process of this embodiment is approximately as follows:
firstly, a test fixture is installed and fastened on the ground, a motor of a fan to be tested is fixed on a fan installation seat, the fan is fastened after an air outlet flange of the fan is aligned with an air outlet assembly seat plate, then the air outlet assembly seat plate is connected with the air outlet flange of the fan and tightly contacts with the air outlet flange through a threaded sleeve of an air outlet assembly, then the air outlet assembly seat plate is well fixed through a first locking nut and a second locking nut, an air inlet of a silencer is fastened with an air outlet of an air pipe through bolts, the silencer is properly fixed, and the position of a second air quantity adjusting door is checked. After all the fans are ready, a power supply is started, the fan impeller rotates to convey wind pressure, the wind discharge quantity of the fan is changed by adjusting the opening degree of the first wind quantity adjusting door and the opening degree of the second wind quantity adjusting door, and the fan power and the vibration under different wind pressures can be realized, so that whether the experimental performance parameters of the fan meet the technical requirements of design is detected. Wherein wind pressure is the pressure of the wind delivered by the fan acting on the damper. Wind generated in the test process passes through the air outlet of the fan, then passes through the air pipe and then passes through the muffler to be discharged. The silencer is made of iron and wrapped with iron sheets, and is internally provided with glass fiber cotton, so that the silencer can absorb vibration of wind pressure, thereby reducing noise and improving working environment.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a centrifugal fan test fixture, its characterized in that includes base (1) and fan mount pad (2) and the air outlet subassembly of setting on the base, fan mount pad is fixed on the base and is used for motor (41) of fixed mounting fan (4), the air outlet subassembly sets up in fan mount pad side and is used for supporting the air outlet of connecting the fan, the air outlet subassembly includes strutting arrangement (5), bedplate (6) and tuber pipe (7), strutting arrangement sets up on the base and is used for supporting the bedplate, be provided with on the bedplate and be used for connecting connector (61) of tuber pipe and fan air outlet, the air intake of tuber pipe is connected with the connector of bedplate, the air outlet of tuber pipe is provided with air regulation door (71) that are used for adjusting the air flow, strutting arrangement's height-adjustable for the height of bedplate, thereby adapt to the fan of different size specifications;
the supporting device comprises four supporting rods (51) distributed at four corners below the seat plate, each supporting rod comprises a first screw rod (511), a second screw rod (512) and a threaded sleeve (513), one end of the first screw rod is used for being connected with the base, the other end of the first screw rod is provided with external threads, one end of the second screw rod is used for being connected with the seat plate, the other end of the second screw rod is provided with external threads, the threaded sleeve is provided with internal threads, two ends of the internal threads of the threaded sleeve are respectively screwed with the external threads of the first screw rod and the external threads of the second screw rod, and the threaded sleeve is used for adjusting and limiting the relative position between the first screw rod and the second screw rod so as to realize adjustment and fixation of the height of the seat plate;
the supporting device further comprises a first locking nut (514) and a second locking nut (515), the first locking nut is screwed on an external thread at one end of a screw rod connecting screw sleeve, the second locking nut is screwed on an external thread at one end of a screw rod connecting screw sleeve, and the first locking nut and the second locking nut are used for locking and limiting the positions of the screw sleeve relative to the first screw rod and the second screw rod so as to prevent the height of the seat plate from changing after the seat plate is adjusted;
one end of the screw rod I, which is used for being connected with the base, is provided with external threads, and the end of the screw rod I is connected with the base through threads;
one end of the second screw rod is used for connecting the seat board, a connecting seat (516) with a hole is arranged at one end of the second screw rod, a screw (517) is penetrated in the hole of the connecting seat, a screw hole (62) matched with the screw is arranged on the seat board, and the second screw rod is connected with the seat board through the screw;
a T-shaped groove (22) is formed in a top plate (21) of the fan mounting seat, a T-shaped bolt (23) used for fixedly connecting a motor base of the centrifugal fan is embedded in the T-shaped groove, and the T-shaped bolt can slide in the T-shaped groove to change the position;
the edge of the first air quantity adjusting door is provided with a plurality of waist-shaped holes (711), the air outlet of the air pipe is connected with the first air quantity adjusting door through bolts penetrating through the waist-shaped holes, and the position of the first air quantity adjusting door is adjusted through the positions of the adjusting bolts in the waist-shaped holes.
2. The centrifugal fan test fixture according to claim 1, wherein the air outlet assembly further comprises a muffler (3), an air inlet of the muffler is connected with an air outlet of the air pipe, and an air quantity adjusting door II (31) for adjusting air outlet flow is arranged at the air outlet of the muffler.
3. The centrifugal fan test fixture according to claim 2, wherein the muffler is of a horn-shaped structure, the air inlet is a small opening end, the air outlet is a large opening end, the air outlet of the muffler is divided into a plurality of small openings (32), the air quantity adjusting door comprises a plurality of small doors (311) which are in one-to-one correspondence with the small openings, and each small opening is provided with a small door.
4. The centrifugal fan test fixture of claim 1, wherein the number of fan mounting seats on the base is two, the number of air outlet assemblies is two, the two fan mounting seats are located in the middle position, and the two air outlet assemblies are located on two sides of the two fan mounting seats respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341642.8A CN107882765B (en) | 2017-12-14 | 2017-12-14 | Centrifugal fan test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341642.8A CN107882765B (en) | 2017-12-14 | 2017-12-14 | Centrifugal fan test fixture |
Publications (2)
| Publication Number | Publication Date |
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| CN107882765A CN107882765A (en) | 2018-04-06 |
| CN107882765B true CN107882765B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711341642.8A Active CN107882765B (en) | 2017-12-14 | 2017-12-14 | Centrifugal fan test fixture |
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| CN (1) | CN107882765B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161884A (en) * | 2021-04-25 | 2021-07-23 | 上海滨海电力工程有限公司 | High-voltage power distribution cabinet with temperature adjusting device and temperature adjusting method |
| CN113390618B (en) * | 2021-06-10 | 2024-01-09 | 深圳市缚火龙机电实业有限公司 | Fan performance test system |
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| EP2693058A1 (en) * | 2012-08-02 | 2014-02-05 | Munters Italy S.p.A. | Axial electric fan unit using a centrifugal regulator device for opening and closing a shutter |
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| CN104989664A (en) * | 2015-07-30 | 2015-10-21 | 沈阳盛纳机械制造有限公司 | A centrifugal fan device |
| CN107131703A (en) * | 2017-07-05 | 2017-09-05 | 南通远征冷冻设备有限公司 | A kind of new blowing cold wind EGR that liquidates |
| CN207583663U (en) * | 2017-12-14 | 2018-07-06 | 株洲联诚集团控股股份有限公司 | A kind of centrifugal blower test tool |
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2017
- 2017-12-14 CN CN201711341642.8A patent/CN107882765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2693058A1 (en) * | 2012-08-02 | 2014-02-05 | Munters Italy S.p.A. | Axial electric fan unit using a centrifugal regulator device for opening and closing a shutter |
| CN103004731A (en) * | 2012-12-17 | 2013-04-03 | 西北农林科技大学 | Regulating device for air inlets of air-assisted sprayer |
| CN104422096A (en) * | 2013-09-03 | 2015-03-18 | 深圳市联创科技集团有限公司 | Twin-air-outlet air conditioner with swingable air duct |
| CN104989664A (en) * | 2015-07-30 | 2015-10-21 | 沈阳盛纳机械制造有限公司 | A centrifugal fan device |
| CN107131703A (en) * | 2017-07-05 | 2017-09-05 | 南通远征冷冻设备有限公司 | A kind of new blowing cold wind EGR that liquidates |
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