A portable field fan testing device

Abstract

This utility model discloses a portable field fan testing device, including a testing instrument for testing fans and a housing for housing the testing instrument. The housing contains a fan support mechanism for auxiliary testing. The fan support mechanism includes a support base for supporting the fan, with several retractable and deployable bracket structures hinged to the bottom of the support base. The fan support mechanism is stored within the housing through the retraction of the bracket structures. Each bracket structure includes a support arm, the upper end of which is mounted on the bottom of the support base via a retractable and deployable structure. It also includes several locking structures mounted on the top of the support base for locking the fan. This structure enables convenient testing of fans in a field environment by constructing a temporary fan support bracket structure, offering high flexibility and stable testing results.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine testing technology, and in particular relates to a portable field wind turbine testing device. Background Technology

[0002] A fan is a widely used device in industry. Its main structure includes fan blades, a motor that drives the blades, and the entire fan casing (or support). Because fans can drive airflow, they are mainly used in industry as heat dissipation devices, including for cooling mechanical equipment.

[0003] Similarly, in certain specific fields, large working equipment also uses fans for heat dissipation. The specific heat dissipation method is to install fans on the heat-generating components of the equipment, such as the motor. The high-speed rotating motor generates a lot of heat during operation, so fans are installed to dissipate the heat.

[0004] For example, a drive motor used for rotational adjustment of orientation will generate a lot of heat when it is running. Therefore, a DC fan that is in series with the orientation drive motor is installed at the rear end of the orientation drive motor. The premise for the orientation drive motor to work normally is that the fan must be able to operate normally.

[0005] However, DC fans are custom-made and relatively expensive, and manufacturers often have them out of stock. Furthermore, users frequently neglect fan maintenance, leading to frequent fan failures, which can render the entire system inoperable.

[0006] When a fan malfunctions, maintenance personnel often replace parts. However, new fans often lack spare parts, so to ensure the equipment can work properly, maintenance personnel often have to repair the fan.

[0007] However, after the fan was repaired, it was directly reinstalled on the equipment for use. Because the repair was not thorough, the fan would malfunction again after a short period of use. This repeated disassembly and reassembly consumed a lot of repair time and delayed the normal use of the equipment.

[0008] Therefore, after maintenance personnel complete the repair of the wind turbine, the method for checking the wind turbine's condition is to use testing instruments to perform continuity and insulation tests on the wind turbine coils. However, the maintenance environment is often in the field, such as during field training when repairing wind turbines. In this case, it is quite difficult to repair the wind turbine using only testing instruments.

[0009] Specifically, in field environments, wind turbines disassembled from equipment require power-on testing during inspection. Since the turbines are operational during this process, if they cannot be effectively secured, the high-speed operation of the turbines will prevent successful testing. Therefore, in field environments, finding a simple, quick, and stable method to secure the turbines before testing is crucial for improving testing efficiency and reducing testing difficulty. Utility Model Content

[0010] Based on the above background, the purpose of this utility model is to provide a portable field fan detection device.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: A portable field fan testing device includes a testing instrument for testing fans, characterized in that it further includes a housing for housing the testing instrument, and the housing contains a fan bracket mechanism for auxiliary testing. The fan bracket mechanism includes a support base for supporting the fan, and the bottom of the support base is hinged with several retractable and deployable bracket structures; the fan bracket mechanism is stored in the housing through the storage of the bracket structures. The support structure includes a support arm, the upper end of which is installed at the bottom of the support base via a retractable opening structure. It also includes several locking structures installed on top of the support base to lock the fan.

[0012] Preferably, the cross-sectional shape of the support base is circular; A weight-reducing hole is provided at the top center of the support base.

[0013] Preferably, the bottom of the support base is fixedly connected to a sensor bracket for mounting the detection sensor, and the sensor bracket has mounting holes.

[0014] Preferably, the retractable opening structure includes a detachable hinged fixing seat that is mounted at the bottom of the support base; The top of the support arm is detachably fitted with a limiting hinge structure that mates with the limiting hinge fixing seat.

[0015] Preferably, the limiting hinge fixing seat includes a mounting seat fixedly installed on the support seat, and curved fixing hinge plates are fixedly connected to both sides of the bottom of the mounting seat respectively; The limiting hinge structure includes a pair of hinge lugs that cooperate with the fixed hinge plate; The hinge lug is fixedly mounted on a mounting plate, which is fixedly mounted on the support arm. A pin is fixedly connected between the fixed hinge plates to hinge the lug.

[0016] Preferably, the maximum angle at which the support arm can be flipped downwards from its retracted state by means of the retractable opening structure is 90 degrees.

[0017] Preferably, the locking structure includes a plurality of fan fixing clamps that are respectively fixedly installed at the top position of the support base.

[0018] Preferably, the locking structure further includes a plurality of limiting stake structures that cooperate with the wind turbine fixing clamp.

[0019] Preferably, the limiting pile structure includes a pile rod fixedly connected to the support base, and a limiting rod is fixedly connected to the top of the pile rod; During the inspection, the mounting holes on the fan penetrated through the limiting pile structure.

[0020] Preferably, the width of the support arm decreases proportionally from top to bottom along the height direction.

[0021] This utility model has the following beneficial effects: 1. The detection device disclosed in this utility model allows the detector to be stored in a case for easy transport to the field. The retractable and deployable fan bracket mechanism provides a temporary detection support for field maintenance, thereby improving the stability of the detection process.

[0022] 2. The support arm is designed so that its width decreases proportionally from top to bottom along the height direction, meaning the upper end of the support arm is wider and the lower end is narrower. This design allows for both stable support and easy insertion into the ground for support.

[0023] 3. The upper end of the support arm is installed at the bottom of the support base via a retractable opening structure. This structure allows for the retraction and unfolding of the support arm while preventing it from opening excessively during unfolding. This prevents the support arm from easily flipping over if a testing fan vibrates during testing, thus reducing the stability of the support. The retractable opening structure effectively prevents the support arm from continuing to flip outwards once it has reached a vertical position.

[0024] 4. In the retractable and unfoldable structure, a curved fixed hinge plate is used. Therefore, due to the limitation of the curved shape, once the support arm has flipped to a vertical position, it cannot continue to flip outwards further. This is because the support arm is blocked by the curved fixed hinge plate and cannot flip further outwards. Thus, through this structural design, during operation, when it is necessary to inspect the fan, the fan bracket mechanism can be removed from the housing, unfolded, and temporarily fixed to the ground. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the fan bracket mechanism in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure for storing the unfolded structure in an embodiment of this utility model; Figure 4 This is a schematic diagram of the storage and unfolding structure from another perspective in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the power line and signal line in the embodiment of this utility model; Figure 6 This is a schematic diagram of the locking structure in an embodiment of the present invention.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] Example 1 like Figure 1-6 As shown, a portable field fan testing device includes a testing instrument 2 for testing fans. The testing instrument 2 is a conventional testing instrument for testing fans disclosed in the prior art. The testing instrument 2 can detect the fan's speed, current and other test data.

[0032] Those skilled in the art can understand the specific working principle and structure of the detector 2 disclosed in this utility model by consulting technical manuals and dictionaries.

[0033] In order to enable simpler, more convenient, more stable, and more effective testing of fans disassembled from equipment in field environments, this utility model makes the following improvements: It also includes a housing 1 for accommodating the detector 2. The housing 1 is a conventional housing structure disclosed in the prior art. The main structure includes the main body of the housing 1 and a hinged lid. The detector 2 is conveniently carried and transported by storing it in the housing 1.

[0034] Meanwhile, a certain amount of space is left between the detector 2 and the side wall of the housing 1 to accommodate the fan bracket mechanism 3 for auxiliary testing of the fan. During the testing process, the fan bracket mechanism 3 is removed and unfolded to serve as a temporary support frame for the tested fan. This ensures the fan is positioned during the testing process, and the safety and stability of the fan testing are higher when it is in a positioned state.

[0035] Specifically, the housing 1 houses the fan bracket mechanism 3 for auxiliary testing. When not in testing mode, the fan bracket mechanism 3 is folded into a small volume for easy storage within the housing 1, facilitating transport and carrying.

[0036] Specifically, the fan bracket mechanism 3 includes a support base 31 for supporting the fan (the cross-sectional shape of the support base 31 is circular; a weight reduction hole is provided at the top center of the support base 31).

[0037] Meanwhile, the bottom of the support base 31 is hinged with several retractable and deployable bracket structures; the fan bracket mechanism 3 is stored inside the housing 1 by retracting the bracket structures. At the same time, a temporary support frame is formed by deploying the bracket structures.

[0038] Specifically, the support structure includes a support arm 33. In order to both stably support a wind turbine of a certain weight and easily fix it to the ground (in the field environment, the bottom of the support arm 33 is directly inserted into the soil for fixation), the shape of the support arm 33 is designed as follows: The width of the support arm 33 decreases proportionally from top to bottom along the height direction, that is, the upper end of the support arm 33 is wider and the lower end is narrower, so that it can provide stable support and can be easily inserted into the ground for support.

[0039] The upper end of the aforementioned support arm 33 is installed at the bottom of the support base 31 via a retractable opening structure 34. The retractable opening structure 34 enables the support arm 33 to be retracted and unfolded, while preventing the support arm 33 from opening too wide during the unfolding process. This would prevent the support arm 33 from easily flipping over once the load is applied to the testing fan and the fan vibrates during the testing process, thus reducing the stability of the support. The retractable opening structure 34 can effectively prevent the support arm 33 from continuing to flip outward after it has flipped to a vertical position.

[0040] Example 2 like Figure 1-6 As shown, based on the structure of Embodiment 1, the above-mentioned retractable opening structure 34 includes a detachable limiting hinge fixing seat (detachably installed by bolts) installed at the bottom position of the support base 31. Correspondingly, a limiting hinge structure that cooperates with the limiting hinge fixing seat is detachably installed on the top of the support arm 33.

[0041] The limiting hinge fixing seat includes a mounting seat 344 fixedly installed on the support seat 31 (similarly, fixed by bolts), and curved fixed hinge plates 343 are fixedly connected to both sides of the bottom of the mounting seat 344.

[0042] Correspondingly, the limiting hinge structure includes a pair of hinge ears 342 that cooperate with the fixed hinge plate 343; the hinge ears 342 are fixedly mounted with a mounting plate 341, the mounting plate 341 is fixedly mounted on the support arm 33, and the fixed hinge plates 343 are fixedly connected with pins for hinge mounting ears.

[0043] Because of the curved structure of the fixed hinge plate 343, the support arm 33 cannot continue to rotate outward after it has rotated to a vertical position due to the limitation of its curved shape. This is because the support arm 33 is blocked by the curved structure of the fixed hinge plate 343 and cannot rotate outward further (i.e., the maximum angle at which the support arm 33 can rotate downward from its retracted state via the retractable opening structure 34 is 90 degrees). Therefore, through this structural design, when the fan needs to be inspected during operation, the fan bracket mechanism 3 can be taken out of the housing 1, unfolded, and temporarily fixed to the ground.

[0044] Meanwhile, several locking structures for locking the fan are installed on the top of the support base 31. After the fan is supported on the top of the support base 31, it is locked by the locking structures.

[0045] Specifically, the locking structure includes several fan fixing clips 32 that are respectively fixedly installed at the top of the support base 31.

[0046] Among them, the wind turbine fixing lock 32 is a conventional lock for locking disclosed in the prior art. Its main structure includes a lock base fixedly installed on the support base 31, and a lock handle hinged to the lock base, with a lock head for locking installed on the lock handle.

[0047] Meanwhile, in order to further ensure the stable locking of the wind turbine, the above-mentioned locking structure also includes several limiting pile structures 311 that cooperate with the wind turbine fixing clamp 32.

[0048] Specifically, the limiting pile structure 311 cooperates with the mounting hole on the fan. During the testing process, the mounting hole on the fan is inserted into the limiting pile structure, and the fan is limited by the limiting pile structure 311. The limiting pile structure includes a pile rod 3111 fixedly connected to the support base 31, and a limiting rod 3112 is fixedly connected to the top of the pile rod 3111. During the testing process, the mounting hole on the fan passes through the limiting pile structure 311. Subsequently, the fan is fixed by the fan fixing clamp 32, and even if the fan vibrates during the testing process, it is not easy to detach from the locking structure.

[0049] Example 3 like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 2, the bottom of the support base 31 is fixedly connected to a sensor bracket 312 for mounting a detection sensor, and the sensor bracket 312 has mounting holes.

[0050] During the testing process, the sensors used for testing are installed on the sensor bracket 312, such as sensors for detecting the speed of fan blades and sensors for detecting abnormal sounds.

[0051] The testing process is as follows: Power port 21 connects to 220VAC 50HZ AC power. When a fan malfunctions, whether installing a new fan or reinstalling a repaired one, it must be tested before installation to ensure the replacement fan is in good working order. Before testing, open the support arm 33 on the fan to 90° and insert it into the ground in a field environment. Then place the fan on the fan support base 31. To prevent vibration during operation, secure the fan with the fan fixing clamp 32 after placement. Fix the sensor on the signal line 42 to the sensor bracket 312. Connect the other end of the signal line 42 to the XS02 interface 25 on the detector to collect the fan's rotational speed.

[0052] Connect the alligator clip 411 end of power line 41 (there are two alligator clips 411, one connected to the positive terminal and the other to the negative terminal of the fan). Connect the other end of power line 42 to interface 24 of XS01. Connect the power cord of power port 21 to the mains power. During testing, turn the test switch 22 to the ON position. At this time, because the speed control switch 23 is set to the minimum speed, the fan can rotate, but it cannot reach the rated speed. Then adjust the speed control switch 23 to the rated speed of the fan, which is 2850±285rpm. Then check whether the display screen matches the rated voltage (40V) and rated current ≤4.5A of the fan. At the same time, observe whether the spark of the fan carbon brush is too large. This determines whether the fan can work normally.

[0053] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A portable field fan testing device, comprising a fan testing instrument, characterized in that, It also includes a housing for accommodating the testing instrument, which contains a fan bracket mechanism for auxiliary testing; The fan bracket mechanism includes a support base for supporting the fan, and the bottom of the support base is hinged with several retractable and deployable bracket structures; the fan bracket mechanism is stored in the housing through the storage of the bracket structures. The support structure includes a support arm, the upper end of which is installed at the bottom of the support base via a retractable opening structure. It also includes several locking structures installed on top of the support base to lock the fan.

2. The portable field fan testing device according to claim 1, characterized in that, The cross-sectional shape of the support base is circular; A weight-reducing hole is provided at the top center of the support base.

3. The portable field fan testing device according to claim 1, characterized in that, The bottom of the support base is fixedly connected to a sensor bracket for mounting the detection sensor, and the sensor bracket has mounting holes.

4. The portable field fan testing device according to claim 1, characterized in that, The storage and opening structure includes a detachable hinged fixing seat that is installed at the bottom of the support base; The top of the support arm is detachably fitted with a limiting hinge structure that mates with the limiting hinge fixing seat.

5. The portable field fan testing device according to claim 4, characterized in that, The limiting hinge fixing seat includes a mounting seat fixedly installed on the support seat, and curved fixing hinge plates are fixedly connected to both sides of the bottom of the mounting seat respectively. The limiting hinge structure includes a pair of hinge lugs that cooperate with the fixed hinge plate; The hinge lug is fixedly mounted on a mounting plate, which is fixedly mounted on the support arm. A pin is fixedly connected between the fixed hinge plates to hinge the lug.

6. The portable field fan testing device according to claim 4, characterized in that, The maximum angle at which the support arm can be flipped downwards from its retracted state by means of the retractable opening structure is 90 degrees.

7. The portable field fan testing device according to claim 1, characterized in that, The locking structure includes several fan fixing clamps that are respectively fixedly installed at the top of the support base.

8. The portable field fan testing device according to claim 1, characterized in that, The locking structure also includes several limiting stake structures that cooperate with the wind turbine fixing clamps.

9. The portable field fan testing device according to claim 8, characterized in that, The limiting pile structure includes a pile rod fixedly connected to the support base, and a limiting rod fixedly connected to the top of the pile rod; During the inspection, the mounting holes on the fan penetrated through the limiting pile structure.

10. The portable field fan testing device according to claim 1, characterized in that, The width of the support arm decreases proportionally from top to bottom along the height direction.

Images