Subway air conditioning unit water tightness test bench

Abstract

The utility model provides a water tightness test bench for a subway air conditioning unit, which belongs to the technical field of air conditioning detection and comprises a placing platform, a waterproof housing and a flushing pipe. The placing platform is used for placing an air-conditioning unit. And the waterproof housing is buckled on the placement platform to form an internal detection space. The flushing pipe is slidably arranged on the waterproof housing through the driving assembly and located in the internal detection space, and nozzles facing the air conditioning unit are evenly distributed on the flushing pipe in the axial direction. The moving track of the flushing pipe is arc-shaped, and the two ends of the arc extend to the two sides of the air conditioning unit. The subway air conditioning unit water tightness test bench provided by the utility model can more truly detect the water tightness performance of the air conditioning unit under the dynamic water flow impact, can effectively detect the sealing performance of the air conditioning unit under the water flow impact and the stress at different angles, avoids the water leakage hidden danger caused by the water flow impact which may be omitted in the water immersion detection, and improves the detection efficiency. And the accuracy and reliability of water tightness detection are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air conditioning detection technical field, more specifically, relate to a subway air conditioning unit water tightness test bench. BACKGROUND

[0002] As a key component of modern urban public transportation, the air conditioning system of subway plays a vital role in ensuring the normal operation of the train and the comfortable travel of passengers. As an air conditioning system installed on the subway train, the subway air conditioner is responsible for adjusting the temperature, humidity, air flow and cleanliness in the car, not only committed to creating a comfortable driving environment for passengers, but also has irreplaceable significance in protecting the precise electrical equipment and other facilities inside the train from the erosion of the external harsh environment.

[0003] Among the many performance indicators of the subway air conditioning unit, the reliability of the waterproof function is directly related to the service life, running stability and safety of the train. Currently, the industry mainly uses water immersion testing to detect the waterproof performance of the air conditioning unit, that is, the air conditioning unit is immersed in water, and the sealing performance in water is observed to determine the water tightness.

[0004] However, in the actual subway operation and maintenance scene, the subway maintenance personnel usually use a water gun to clean the air conditioning unit. This water gun flushing method in the actual use scene is significantly different from the traditional water immersion detection method. The water jet sprayed by the water gun has a certain pressure, impact force and different jet angles and coverage, and the water immersion detection method alone cannot effectively simulate and detect the water tightness of the air conditioning unit in the face of the water gun flushing actual working condition. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a subway air conditioning unit water tightness test bench, which aims at effectively detecting the waterproofness of the air conditioning unit.

[0006] To achieve the above purpose, the utility model adopts the technical scheme of providing a subway air conditioning unit water tightness test bench, which comprises:

[0007] A placing platform is used to place the air conditioning unit.

[0008] A waterproof shell is buckled on the placing platform to form an internal detection space.

[0009] A water flushing pipe is slidably arranged on the waterproof shell by a driving assembly and located in the internal detection space. The water flushing pipe is uniformly provided with a nozzle facing the air conditioning unit along the axial direction. The moving track of the water flushing pipe is arc-shaped, and the two ends of the arc-shaped track extend to the two sides of the air conditioning unit.

[0010] In a possible implementation, the driving assembly comprises:

[0011] A bracket is fixedly arranged on the flushing pipe and is in sliding connection with the waterproof cover shell;

[0012] An arc-shaped rack is fixedly arranged on the waterproof cover shell and is located above the air conditioning unit;

[0013] A driving gear is rotatably arranged on the bracket and is in engagement with the arc-shaped rack;

[0014] A driving motor is fixedly arranged on the bracket and has an output end connected with the driving gear.

[0015] In a possible implementation, an arc-shaped track is fixedly arranged on the waterproof cover shell, and a sliding block in sliding connection with the arc-shaped track is fixedly arranged on the bracket.

[0016] In a possible implementation, a water collecting groove is formed in the upper surface of the placing platform, and the air conditioning unit is located in the water collecting groove, so that the bottom end of the air conditioning unit is immersed when the water collecting groove is filled with water.

[0017] In a possible implementation, an electromagnetic valve is fixedly arranged at the water outlet of the water collecting groove.

[0018] When the electromagnetic valve is closed, the water collecting groove is filled with water; and when the electromagnetic valve is opened, the water collecting groove discharges water.

[0019] In a possible implementation, a liquid level sensor is fixedly arranged on the surface of the water collecting groove, a controller in electrical connection with the liquid level sensor is arranged on the placing platform, and the controller is in electrical connection with the electromagnetic valve.

[0020] In a possible implementation, a water storage tank is in communication with the water outlet of the water collecting groove, a water pump is in communication with the water outlet of the water storage tank, and the water outlet of the water pump is in communication with the flushing pipe.

[0021] In a possible implementation, a filter screen is fixedly arranged at the water outlet of the water storage tank, and the filter screen is used to filter the water flow entering the water pump.

[0022] In a possible implementation, the placing platform and the waterproof cover shell are hingedly connected, a hydraulic cylinder for driving the waterproof cover shell to overturn is connected between the placing platform and the waterproof cover shell, and the two ends of the hydraulic cylinder are respectively hingedly connected with the placing platform and the waterproof cover shell.

[0023] In a possible implementation, an observation window is arranged on the waterproof cover shell.

[0024] The utility model provides a subway air conditioning unit water tightness test bench, and compared with prior art, beneficial effect lies in: drive assembly drives the water pipe to move around the air conditioning unit, and the spray head can spray water to the air conditioning unit from multiple angles, like the water gun washing operation in actual maintenance, can more truly test the water tightness performance of the air conditioning unit under the dynamic water flow impact, can effectively detect the sealing performance of the air conditioning unit under the water flow impact and different angle stress, avoids the water leakage hidden danger caused by water flow impact which water immersion detection can miss, greatly improves the accuracy and reliability of water tightness detection. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect more clearly, the following will be further detailed to the utility model with the drawings and examples.It is obvious that the drawings in the following description only some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not creating laboriously, other drawings can also be obtained according to these drawings.

[0026] Figure 1 The utility model provides a subway air conditioning unit water tightness test bench's structure schematic view for the utility model embodiment;

[0027] Figure 2 The utility model provides a subway air conditioning unit water tightness test bench's sectional view for the utility model embodiment;

[0028] Figure 3 The utility model provides another angle subway air conditioning unit water tightness test bench's sectional view for the utility model embodiment;

[0029] Figure 4 For Figure 2 The utility model provides the enlarged structure schematic view of A part.

[0030] In the drawing: 1, place platform;11, water collecting groove;12, electromagnetic valve;13, liquid level sensor;14, controller;15, water storage tank;16, water pump;17, filter screen;2, air conditioning unit;3, waterproof cover shell;31, observation window;4, water flushing pipe;41, spray head;51, support;52, arc rack;53, drive gear;54, drive motor;55, arc track;56, sliding block;6, hydraulic cylinder. DETAILED DESCRIPTION

[0031] In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect more clearly, the following will be further detailed to the utility model with the drawings and examples.It is obvious that the drawings in the following description only some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not creating laboriously, other drawings can also be obtained according to these drawings.

[0032] Please see Figure 1 ,Figure 2 and Figure 3 The utility model provides a subway air conditioning unit water tightness test bench, and the utility model discloses a subway air conditioning unit water tightness test bench, including placing platform 1, waterproof cover shell 3 and flush pipe 4. Placing platform 1 is used to place air conditioning unit 2. Waterproof cover shell 3 is buckled on placing platform 1 and forms internal detection space. Flush pipe 4 is slidably arranged on waterproof cover shell 3 through drive assembly and is located internal detection space, and flush pipe 4 is uniformly distributed with the spray head 41 towards air conditioning unit 2 along the axial direction. The moving track of flush pipe 4 is arc, and both ends of the arc extend to both sides of air conditioning unit 2.

[0033] Wherein, both ends of flush pipe 4 extend to placing platform 1 and are bent, so that the shape of whole flush pipe 4 is inverted U shape, so that flush pipe 4 can better enclose air conditioning unit 2 in the process of moving, and the coverage is larger when spraying air conditioning unit 2. Meanwhile, flush pipe 4 is rigid pipe fitting, so that flush pipe 4 does not deform in the process of moving.

[0034] When detecting, flush pipe 4 can start from one side of air conditioning unit 2 and gradually move to the other side along the arc track, and the uniform distribution of spray head 41 ensures that the water flow covers the whole, and the spray head 41 is like the water gun washing operation in actual maintenance, can more truly inspect the water tightness performance of air conditioning unit 2 under the dynamic water flow impact, avoids the leakage hidden danger caused by water flow impact that water immersion detection can miss, and greatly improves the accuracy and reliability of water tightness detection.

[0035] In some embodiments, please refer to Figure 2 and Figure 4 Drive assembly includes support 51, arc gear rack 52, drive gear 53 and drive motor 54. Wherein, support 51 is fixedly arranged on flush pipe 4 and is slidably connected with waterproof cover shell 3. Arc gear rack 52 is fixedly arranged on waterproof cover shell 3 and is located above air conditioning unit 2. Drive gear 53 is rotatably arranged on support 51 and is engaged with arc gear rack 52. Drive motor 54 is fixedly arranged on support 51, and the output end is connected with drive gear 53.

[0036] Support 51 provides stable support for flush pipe 4, so that flush pipe 4 is more stable in the process of moving. When drive motor 54 starts, drive gear 53 rotates, and through the meshing action of drive gear 53 and arc gear rack 52, flush pipe 4 moves along the arc track, so that spray head 41 sprays air conditioning unit 2 from different angles, like the water gun washing operation in actual maintenance, can more truly inspect the water tightness performance of air conditioning unit under the dynamic water flow impact, can effectively detect the sealing performance of air conditioning unit under water flow impact and stress of different angles, avoids the leakage hidden danger caused by water flow impact that water immersion detection can miss, and greatly improves the accuracy and reliability of water tightness detection.

[0037] In some embodiments, please refer to Figure 2 and Figure 4 The waterproof shell 3 is fixedly provided with an arc-shaped track 55, and the support 51 is fixedly provided with a sliding block 56 in sliding connection with the arc-shaped track 55. During the movement of the flushing pipe 4, the sliding block 56 slides along the arc-shaped track 55, limiting the degree of freedom of the flushing pipe 4, so that it can only move along the predetermined arc-shaped track. During detection, even if the flushing pipe 4 is subjected to the reaction force of water flow impact or other external force interference, it can maintain a stable movement path under the constraint of the arc-shaped track 55 and the sliding block 56, ensuring that the spray head 41 always aims at the air conditioning unit 2 for water spraying detection, thereby improving the accuracy and stability of detection.

[0038] In some embodiments, please refer to Figure 2 and Figure 3 The upper surface of the placement platform 1 is provided with a water collecting groove 11, and the air conditioning unit 2 is located in the water collecting groove 11, so that the bottom end of the air conditioning unit 2 can be immersed when the water collecting groove 11 is filled with water.

[0039] The water collecting groove 11 on the upper surface of the placement platform 1 can be used to accumulate water to immerse the bottom end of the air conditioning unit 2, and combined with the water spraying detection of the flushing pipe 4, a comprehensive detection mode of water immersion and water flushing is realized. During detection, the water flow sprayed by the spray head 41 can remain in the water collecting groove 11, and the water level in the water collecting groove 11 rises to immerse the bottom end of the air conditioning unit 2, thereby realizing the detection of the water tightness of the bottom of the air conditioning unit 2 in the static water immersion state. It should be understood that when the air conditioning unit 2 is installed on the train, the lower surface of the air conditioning unit 2 will not be washed when the air conditioning unit 2 is washed, so only the lower end of the air conditioning unit 2 needs to be tested.

[0040] It should be noted that the bottom of part of the air conditioning unit 2 has an air port, and the air port is sealed and connected by an air duct, so the bottom of this air conditioning unit 2 does not need to be tested.

[0041] In some embodiments, please refer to Figure 1 and Figure 3 The water outlet of the water collecting groove 11 is fixedly provided with an electromagnetic valve 12. When the electromagnetic valve 12 is closed, the water collecting groove 11 is filled with water. When the electromagnetic valve 12 is opened, the water collecting groove 11 discharges water. The surface of the water collecting groove 11 is fixedly provided with a liquid level sensor 13, and the placement platform 1 is provided with a controller 14 electrically connected with the liquid level sensor 13, and the controller 14 is electrically connected with the electromagnetic valve 12.

[0042] The liquid level sensor 13 monitors the water level information in the water collecting tank 11 in real time and transmits a signal to the controller 14, and the controller 14 controls the opening and closing of the electromagnetic valve 12 according to the set water level parameter. In the water immersion detection, the controller 14 controls the electromagnetic valve 12 to be closed, and the water collecting tank 11 starts to store water, so that the water level reaches the preset height of the bottom end of the air conditioning unit 2. When the water in the water collecting tank 11 is too much and is about to overflow, the controller 14 controls the electromagnetic valve 12 to be opened to realize drainage, which can effectively prevent the water collecting tank 11 from overflowing, ensure the safe operation of the equipment, reduce the safety risk caused by the overflow, and improve the safety and reliability of the test bench.

[0043] In some embodiments, referring to Figure 1 and Figure 3 , the water outlet end of the water collecting tank 11 is communicated with a water storage tank 15, the water outlet end of the water storage tank 15 is communicated with a water pump 16, and the water outlet end of the water pump 16 is communicated with the flushing pipe 4. It should be understood that the pipeline communicated between the water pump 16 and the flushing pipe 4 is a hose, and the length can meet the movement requirement of the flushing pipe 4 on the waterproof shell 3.

[0044] In the detection process, the waste water collected by the water collecting tank 11 flows into the water storage tank 15, and the water pump 16 pumps the water in the water storage tank 15 to the flushing pipe 4 for re-water spraying detection, realizing the recycling of water resources, which can greatly reduce the use of fresh water and save water resources. At the same time, it also reduces the detection cost, reduces the environmental pressure of waste water discharge, and improves the environmental protection and economy of the test bench.

[0045] In some embodiments, referring to Figure 3 , a filter screen 17 is fixedly arranged at the water outlet of the water storage tank 15, and the filter screen 17 is used for filtering the water flow entering the water pump 16. The filter screen 17 can effectively filter the impurities in the water flow entering the water pump 16. In the detection process, the waste water may carry impurities falling from the air conditioning unit 2, and the filter screen 17 can intercept these impurities in the water storage tank 15, ensuring that the water flow entering the water pump 16 is clean, thereby protecting the water supply equipment such as the water pump 16, reducing the maintenance cost of the test bench, and improving the reliability and stability of the test bench.

[0046] In some embodiments, referring to Figure 1 , the placing platform 1 and the waterproof shell 3 are hinged, and a hydraulic cylinder 6 for driving the waterproof shell 3 to flip is connected between the placing platform 1 and the waterproof shell 3, and the two ends of the hydraulic cylinder 6 are hinged with the placing platform 1 and the waterproof shell 3 respectively. When placing the air conditioning unit 2, the waterproof shell 3 is flipped open by controlling the hydraulic cylinder 6 to provide sufficient operation space, and after the air conditioning unit 2 is placed on the placing platform 1, the waterproof shell 3 is buckled by controlling the hydraulic cylinder 6. After the detection is completed, the waterproof shell 3 can also be opened by the hydraulic cylinder 6 to take out the air conditioning unit 2.

[0047] In some embodiments, see Figure 1 and Figure 2 The waterproof cover 3 is provided with an observation window 31. The observation window 31 on the waterproof cover 3 facilitates the operator to observe the air conditioning unit 2 in real time during the detection process. Through the observation window 31, it can be directly observed whether there is leakage on the surface of the air conditioning unit 2, the water spraying condition of the spray head 41 and the distribution of the water flow on the air conditioning unit 2, etc.

[0048] In summary, compared with the prior art, the subway air conditioning unit water tightness test bench provided by the utility model drives the water flushing pipe 4 to move around the air conditioning unit 2 by the driving assembly, and the uniformly distributed spray head 41 can spray water to the air conditioning unit 2 from multiple angles, like the water gun flushing operation in actual maintenance, which can more truly test the water tightness performance of the air conditioning unit 2 under the dynamic water flow impact, can effectively detect the sealing performance of the air conditioning unit 2 under the water flow impact and stress from different angles, avoids the water leakage hidden danger caused by the water flow impact which may be missed in the water immersion detection, and greatly improves the accuracy and reliability of the water tightness detection.

[0049] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A subway air conditioning unit water tightness test bench, characterized in that, The utility model relates to an air conditioner unit internal detection device, including: a placing platform (1) for placing an air conditioner unit (2); a waterproof cover shell (3) buckled on the placing platform (1) to form an internal detection space; and a flushing pipe (4) slidingly arranged on the waterproof cover shell (3) by a driving assembly and located in the internal detection space, the flushing pipe (4) being uniformly provided with nozzles (41) facing the air conditioner unit (2) in the axial direction, the moving track of the flushing pipe (4) being arc-shaped, and the two ends of the arc-shaped track extending to the two sides of the air conditioner unit (2).

2. The water tightness test bench for a subway air conditioning unit according to claim 1, wherein The driving assembly includes: a support (51) fixedly arranged on the flushing pipe (4) and slidingly connected with the waterproof cover shell (3); an arc-shaped rack (52) fixedly arranged on the waterproof cover shell (3) and located above the air conditioner unit (2); a driving gear (53) rotatably arranged on the support (51) and meshed with the arc-shaped rack (52); a driving motor (54) fixedly arranged on the support (51) and having an output end connected with the driving gear (53).

3. The water tightness test bench for a subway air conditioning unit according to claim 2, wherein An arc-shaped track (55) is fixedly arranged on the waterproof cover shell (3), and a sliding block (56) slidingly connected with the arc-shaped track (55) is fixedly arranged on the support (51).

4. The water tightness test bench for a subway air conditioning unit according to claim 1, wherein An upper surface of the placing platform (1) is provided with a water collecting groove (11), and the air conditioner unit (2) is located in the water collecting groove (11) so that the bottom end of the air conditioner unit (2) can be immersed when water is stored in the water collecting groove (11).

5. The water tightness test bench for a subway air conditioning unit according to claim 4, wherein An electromagnetic valve (12) is fixedly arranged at a water outlet of the water collecting groove (11); when the electromagnetic valve (12) is closed, water is stored in the water collecting groove (11); and when the electromagnetic valve (12) is opened, water is discharged from the water collecting groove (11).

6. The water tightness test bench for a subway air conditioning unit according to claim 5, wherein A liquid level sensor (13) is fixedly arranged on the surface of the water collecting groove (11), a controller (14) electrically connected with the liquid level sensor (13) is arranged on the placing platform (1), and the controller (14) is electrically connected with the electromagnetic valve (12).

7. The water tightness test bench for a subway air conditioning unit according to claim 4, wherein A water storage tank (15) is communicated with the water outlet end of the water collecting groove (11), a water pump (16) is communicated with the water outlet end of the water storage tank (15), and the water outlet end of the water pump (16) is communicated with the flushing pipe (4).

8. The water tightness test bench for a subway air conditioning unit according to claim 7, wherein A filter screen (17) is fixedly arranged at the water outlet of the water storage tank (15), and the filter screen (17) is used for filtering water flow entering the water pump (16).

9. The water tightness test bench for a subway air conditioning unit according to claim 1, wherein The placing platform (1) and the waterproof cover shell (3) are hingedly connected, a hydraulic cylinder (6) for driving the waterproof cover shell (3) to overturn is connected between the placing platform (1) and the waterproof cover shell (3), and the two ends of the hydraulic cylinder (6) are respectively hingedly connected with the placing platform (1) and the waterproof cover shell (3).

10. The water tightness test bench for a subway air conditioning unit according to claim 1, wherein An observation window (31) is arranged on the waterproof cover shell (3).

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