CN210154748U - Underwater dynamic waterproof testing device - Google Patents
Underwater dynamic waterproof testing device Download PDFInfo
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- CN210154748U CN210154748U CN201921293738.6U CN201921293738U CN210154748U CN 210154748 U CN210154748 U CN 210154748U CN 201921293738 U CN201921293738 U CN 201921293738U CN 210154748 U CN210154748 U CN 210154748U
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Abstract
The utility model discloses a waterproof testing arrangement of developments under water. An underwater dynamic waterproof testing device comprises a controller, a water pump and a driving motor connected with the water pump; the water pump water inlet and the water pump water outlet of the water pump are arranged in the closed-loop pipeline, and the guide structure is positioned on one side of the water pump water outlet and is used for changing the rotary motion of the water pumped by the water pump into axial motion; and a pressure detection device and a flow rate detection device are also arranged in the closed-loop pipeline, and the driving motor, the pressure detection device and the flow rate detection device are respectively in signal connection with the controller. Through the utility model discloses can realize testing velocity of flow and pressure in an organic whole, can effectively reduce test time and test work volume.
Description
Technical Field
The utility model belongs to the waterproof test field especially relates to a waterproof testing arrangement of developments under water.
Background
At present, dynamic waterproof test and inspection are needed to be carried out on a plurality of electronic products, particularly, electronic and electrical products which are frequently used under water and need to be moved need to be tested and inspected in a dynamic waterproof sealing performance test in research, development and production processes so as to ensure the service performance of the electronic and electrical products. At present, the dynamic waterproof test inspection needs to be carried out, including carrying waterproof wrist-watches, waterproof cell-phones, waterproof cameras and the like used under the swimming scene, and including carrying propeller, dive flashlight, underwater unmanned aerial vehicle and the like used under the dive scene.
At present, when dynamic waterproof test inspection is carried out, pressure detection needs to be carried out on a product to be tested under the pressure of a preset requirement, and flow velocity detection needs to be carried out on the product to be tested under the water flow velocity of the preset requirement.
How to solve the technical problems becomes a technical difficulty to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can carry out the waterproof testing arrangement of developments under water that pressure and velocity of flow detected simultaneously, it can effectively reduce test time and test work volume.
The utility model provides an underwater dynamic waterproof testing device, which comprises a controller, a water pump and a driving motor connected with the water pump; the water pump device comprises a water pump, a water inlet pipe, a water outlet pipe and a closed-loop pipeline, wherein the closed-loop pipeline is provided with the water inlet pipe connected with an external water source, a guide structure and a test bin used for placing a product to be tested are sequentially arranged in the closed-loop pipeline along the water movement direction, and the water inlet and the water outlet of the water pump are arranged in the closed-loop pipeline; the closed-loop pipeline is also internally provided with a pressure detection device for detecting the water pressure in the closed-loop pipeline and a flow speed detection device for detecting the water flow speed in the closed-loop pipeline, and the driving motor, the pressure detection device and the flow speed detection device are respectively in signal connection with the controller.
Preferably, the guide structure comprises a pipe body installed on the closed-loop pipeline, and a plurality of guide vanes are axially arranged on the inner wall of the pipe body.
Preferably, the length of the guide vane is the same as that of the pipe body, and the cross section of each guide vane on two sides along the water flow direction of the closed-loop pipeline is an arc-shaped surface.
Preferably, a drain pipe for draining water in the pipe is arranged on the closed-loop pipeline, a drain control valve is arranged on the drain pipe, and the drain control valve is in signal connection with the controller.
Preferably, an air outlet is formed in the upper end of the test chamber, an air exhaust control valve is arranged on the air outlet and is in signal connection with the controller, a sealing door is arranged at the upper end of the test chamber, a product mounting frame for mounting a product is arranged in the test chamber, and a transparent window for observing in the test chamber is arranged on the sealing door.
Preferably, the flow velocity detection device and the product mounting rack are both arranged on a central line of the closed-loop pipeline; the pressure detection device is arranged on the test bin.
Preferably, be provided with into water control valve on the inlet tube, be provided with the booster pump on the inlet tube, booster pump and into water control valve respectively with controller signal connection.
Compared with the prior art, the utility model, its beneficial effect lies in:
the utility model discloses in advance to carry out automatic waterproof test to the product through set gradually water pump, guide structure and experimental storehouse on closed loop pipeline, the hydrologic cycle work that annotates water cooperation water pump in the closed loop pipeline in real time twitches in closed loop pipeline carries out dynamic waterproof environment, then carries out pressure and speed test simultaneously. Wherein, the utility model has the advantages that the utility model can be in the dynamic water testing environment by arranging the water pump to make the water in the closed loop pipeline always in the dynamic state, and, the utility model can make the water pump always in the dynamic water testing environment by changing the application environment of the water pump, namely, the utility model can not pump the static water but pump the dynamic water in the closed loop pipeline always in combination with the water pumped by the water pump to move in the closed loop pipeline in the horizontal plane state without lift, thereby the water pump in the application environment of the utility model can save more than 3/4 under the condition of constant torque because of providing the dynamic water and without lift, thereby ensuring to provide enough power for the closed loop pipeline without greatly improving the torque and causing the damage problem of the water pump, therefore, the utility model solves the problem that the traditional technology can only singly carry out the pressure test or the flow rate test during the dynamic waterproof test, the utility model discloses can realize velocity of flow and pressure test in an organic whole, can effectively reduce test time and test work volume. The utility model discloses well water pump is elbow formula circulating water pump and select through the flow size, can save the cost under the stable circumstances of effective assurance test, reduces the holistic volume of equipment. The utility model discloses in carry out the real-time adjustment control of velocity of flow and water pressure through the controller, can effectively improve the precision of test. The utility model discloses set up the transparent window on the well sealing door and can effectively improve the observation to the test procedure, increase the nature directly perceived.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional view of a guide structure.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1-2, an underwater dynamic waterproof testing device comprises a controller 1, a water pump 3 and a driving motor 9 connected with the water pump 3; the device is characterized by further comprising a closed-loop pipeline 2, wherein a water inlet pipe 10 used for being connected with an external water source is arranged on the closed-loop pipeline 2, a guide structure 4 and a test chamber 5 used for placing a to-be-tested product are sequentially arranged in the closed-loop pipeline 2 along the water movement direction, a water pump water inlet and a water pump water outlet of the water pump 3 are arranged in the closed-loop pipeline 2, and the guide structure 4 is located on one side of the water pump water outlet and used for changing the rotary motion of water pumped out by the water pump 3 into axial motion; the closed-loop pipeline 2 is also internally provided with a pressure detection device 7 for detecting the water pressure in the closed-loop pipeline 2 and a flow velocity detection device 8 for detecting the water flow velocity in the closed-loop pipeline 2, and the driving motor 9, the pressure detection device 7 and the flow velocity detection device 8 are respectively in signal connection with the controller 1. The controller 1 is provided with a touch panel 101 for performing human-computer interaction. The device is also provided with a fixed mounting frame for integrally supporting the equipment. The pressure detection device 7 is a water pressure sensor, the flow velocity detection device 8 is a flow velocity sensor, and the controller 1 is a PLC.
The utility model discloses in, guide structure 4 is including installing body 41 on closed loop pipe 2 body 41 inner wall is equipped with a plurality of guide vane 42 along the axial, guide vane 42 length is the same with body 41 length to each guide vane 42 is the arcwall face along the both sides cross-section of 2 rivers directions of closed loop pipe, and guide vane 42 sets up along water flow direction promptly. Through the rotary motion that goes out design guide structure 4 at the water pump delivery port and can effectively eliminate water, make it become axial motion, for the rotary motion that better makes water becomes axial rectilinear motion, can also set up 2 guide structure 4 as required and the corresponding guide vane 42 of two guide structure 4 staggers rather than being in same straight line.
The utility model discloses in, be provided with the drain pipe 13 that is used for the intraductal water removal on the closed loop pipeline 2, be provided with drainage control valve 14 on the drain pipe 13, drainage control valve 14 and 1 signal connection of controller.
The utility model discloses in, 5 upper ends in experimental storehouse are provided with gas vent 15, be provided with exhaust control valve 16 on the gas vent 15, exhaust control valve 16 and 1 signal connection of controller, 5 upper ends in experimental storehouse are provided with sealing door 51, be provided with the product mounting bracket 6 that is used for the product installation in experimental storehouse 5, be provided with the transparent window that is used for observing in experimental storehouse 5 on the sealing door 51. The product mounting frame 6 is fixedly arranged on the test chamber 5 and can fix the product through a clamp and can also be tightened.
In this embodiment, the flow velocity detection device 8 and the product mounting frame 6 are both arranged on the central line of the closed loop pipeline 2 to effectively improve the detection precision of the flow velocity at the position of the product during the product test, and the pressure detection device 7 is arranged on the test chamber 5 to effectively improve the water pressure precision at the position of the product during the product test.
The utility model discloses in, be provided with into water control valve 12 on the inlet tube 10, be provided with booster pump 11 on the inlet tube 10, booster pump 11 and into water control valve 12 respectively with 1 signal connection of controller.
In the utility model, the water pump 3 adopts the elbow type circulating water pump, so that the resistance of the water flow in the pipeline can be reduced to the minimum; secondly, the circulating water pump also belongs to one type of axial flow pump, the axial flow pump mainly leads fluid to an outlet by the lift force of blades, the fluid is axially led in and axially led out, the circulating water pump has the advantages of large flow and the like, and the circulating water pump is the water pump with the maximum flow under the condition of the same power in all water pump types. The driving motor 9 is a servo motor, the highest rotating speed can reach 3000 revolutions, and meanwhile, the speed regulation range is wide, the speed regulation is stable, and the overload capacity is strong. The driving motor 9 is connected to the water pump 3 through a pulley 91.
In this embodiment, closed loop pipeline 2 designs into annular circulating line, and rivers circulate in the pipeline, and closed loop pipeline 2 is sealed pressure-bearing simultaneously, can confirm the diameter of pipeline according to the size of test sample, confirms the wall thickness of pipeline according to the size of test pressure to save cost. And a pointer type pressure gauge can be arranged on the closed-loop pipeline 2 and used for visually displaying the pressure in the pipeline. Pressure cover with transparent sight glass: the pressure cover is used for opening the sealing pipeline to take a sample, opening the cover, and closing and locking the seal after the sample is installed. Meanwhile, the transparent sight glass is covered, so that the test state of the sample can be conveniently observed.
An underwater dynamic waterproof test control method adopting an underwater dynamic waterproof test device comprises the following processing steps:
step 1: fixing a product to be tested in the test chamber 5, sealing, and setting water pressure and flow rate on the controller 1 according to the test requirement of the product to be tested;
step 2: the controller 1 receives the signal of the pressure detection device 7 in real time to control the water injection in the closed-loop pipeline 2 so that the water pressure reaches a set value;
and step 3: after the water pressure in the closed-loop pipeline 2 reaches a set value, the controller 1 receives a signal of the flow rate detection device 8 in real time to control the driving motor 9 to drive the water pump 3, so that the flow rate of the water in the closed-loop pipeline 2 reaches the set value;
and 4, step 4: after the set detection time is reached, the controller 1 controls the driving motor 9 to stop working.
In step 3, the water pump 3 is an elbow type circulating water pump and is selected according to the flow rate, wherein the flow rate is obtained by the following calculation formula,
wherein, L is the flow of the closed loop pipeline 2 during the test operation, V is the maximum flow speed required during the test operation, and S is the inner circle sectional area of the closed loop pipeline 2;
wherein the rated flow of the water pump 3 is not less than L.
When the device is started to operate, the controller 1 controls the rotating speed of the driving motor 9 to increase to a constant speed, the flowing speed in the closed-loop pipeline 2 reaches a set value, and then the controller 1 controls the rotating speed of the driving motor 9 through a PID algorithm to control the flowing speed in the closed-loop pipeline 2 to be unchanged when a product to be tested flows through.
The utility model also provides an underwater dynamic waterproof test control method, this method includes the processing step:
step 1: fixing a product to be tested in the test chamber 5, sealing, and setting water pressure and flow rate on the controller 1 according to the test requirement of the product to be tested;
step 2: the controller 1 receives the signal of the pressure detection device 7 in real time to control the water injection in the closed-loop pipeline 2 so that the water pressure reaches a set value;
and step 3: after the water pressure in the closed-loop pipeline 2 reaches a set value, the controller 1 receives a signal of the flow rate detection device 8 in real time to control the driving motor 9 to drive the water pump 3, so that the flow rate of the water in the closed-loop pipeline 2 reaches the set value;
and 4, step 4: after the set detection time is reached, the controller 1 controls the driving motor 9 to stop working. After the test, the staff can carry out the step-down in the closed loop pipeline 2 through the control of controller 1 to when water pressure reduces the set pressure value, carry out pressure alarm always, water sprays out when avoiding the staff to open sealing door 51, influences going on of work.
In step 3, the water pump 3 is an elbow type circulating water pump and is selected by the flow rate, which is obtained by the following calculation formula,
wherein, L is the flow of the closed loop pipeline 2 during the test operation, V is the maximum flow speed required during the test operation, and S is the inner circle sectional area of the closed loop pipeline 2; the rated flow rate of the water pump 3 is not less than L.
When the pipeline is started to operate, the controller 1 controls the rotating speed of the driving motor 9 to increase to a constant speed, the flowing speed in the closed-loop pipeline 2 reaches a set value, and then the controller 1 controls the rotating speed of the driving motor 9 through a PID algorithm to control the flowing speed in the closed-loop pipeline 2 to be stable.
In this embodiment, the controller 1 controls the rotation speed of the driving motor 9 to increase to the set value when the flow rate in the closed-loop pipeline 2 reaches the set value, so that the water pump 3 can be effectively prevented from suddenly starting at a high speed to cause a large torque, meanwhile, in the closed-loop pipeline 2, water starts to flow circularly after the water pump 3 is started, water at the water inlet of the water pump 3 is not static but flows at a speed, and the rotation of the water pump 3 can bring continuous superposition of the speed of the circulating water. The thrust of the water pump 3 can improve the water flow speed of the pipeline by improving the rotating speed of the water pump as long as the thrust is larger than the frictional resistance of the inner wall of the pipeline. Therefore, the torque of the water pump is 3 times smaller than that of a conventional water pump, and meanwhile, the rotating speed of the water pump 3 can meet the requirement of higher water flow speed by increasing the speed by 3 times.
In the embodiment, the controller 1 controls the water inlet control valve 12 and the booster pump 11 to operate to inject water for boosting and controls the water outlet control valve 12 to discharge water for reducing pressure through real-time signals of the pressure detection device 7, so as to control the water pressure in the closed-loop pipeline 2 to be stable. The controller 1 is likewise controlled by a PID algorithm.
The foregoing is merely a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as known to the person skilled in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. An underwater dynamic waterproof test device comprises a controller (1), a water pump (3) and a drive motor (9) connected with the water pump (3); the method is characterized in that: the water pump device is characterized by further comprising a closed-loop pipeline (2), wherein a water inlet pipe (10) used for being connected with an external water source is arranged on the closed-loop pipeline (2), a guide structure (4) and a test bin (5) used for placing a product to be tested are sequentially arranged in the closed-loop pipeline (2) along the water movement direction, a water pump water inlet and a water pump water outlet of the water pump (3) are arranged in the closed-loop pipeline (2), and the guide structure (4) is located on one side of the water pump water outlet and used for changing the rotary motion of water pumped by the water pump (3) into axial motion; the water flow rate detection device is characterized in that a pressure detection device (7) used for detecting the water pressure in the closed-loop pipeline (2) and a flow rate detection device (8) used for detecting the water flow rate in the closed-loop pipeline (2) are further arranged in the closed-loop pipeline (2), and the driving motor (9), the pressure detection device (7) and the flow rate detection device (8) are respectively in signal connection with the controller (1).
2. An underwater dynamic waterproof test device according to claim 1, wherein the guide structure (4) comprises a pipe body (41) installed on the closed-loop pipeline (2), and a plurality of guide blades (42) are axially arranged on the inner wall of the pipe body (41).
3. The underwater dynamic waterproof test device of claim 2, wherein the length of the guide vane (42) is the same as that of the pipe body (41), and the cross section of each guide vane (42) on two sides along the water flow direction of the closed loop pipeline (2) is an arc surface.
4. An underwater dynamic waterproof test device according to claim 1, wherein a drain pipe (13) for draining water in the pipe is arranged on the closed-loop pipeline (2), a drain control valve (14) is arranged on the drain pipe (13), and the drain control valve (14) is in signal connection with the controller (1).
5. The underwater dynamic waterproof test device of claim 1, wherein an exhaust port (15) is formed in the upper end of the test chamber (5), an exhaust control valve (16) is arranged on the exhaust port (15), the exhaust control valve (16) is in signal connection with the controller (1), a sealing door (51) is arranged at the upper end of the test chamber (5), a product mounting frame (6) for product mounting is arranged in the test chamber (5), and a transparent window for observation in the test chamber (5) is arranged on the sealing door (51).
6. An underwater dynamic waterproof test device according to claim 5, wherein the flow velocity detection device (8) and the product mounting rack (6) are arranged on the central line of the closed-loop pipeline (2); the pressure detection device (7) is arranged on the test bin (5).
7. The underwater dynamic waterproof test device of claim 1, wherein a water inlet control valve (12) is arranged on the water inlet pipe (10), a booster pump (11) is arranged on the water inlet pipe (10), and the booster pump (11) and the water inlet control valve (12) are respectively in signal connection with the controller (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921293738.6U CN210154748U (en) | 2019-08-12 | 2019-08-12 | Underwater dynamic waterproof testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110319980A (en) * | 2019-08-12 | 2019-10-11 | 广州岳信试验设备有限公司 | A kind of underwater dynamic water-proof test device and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319980A (en) * | 2019-08-12 | 2019-10-11 | 广州岳信试验设备有限公司 | A kind of underwater dynamic water-proof test device and its control method |
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Inventor after: Chen Yue Inventor after: Wan Fang Inventor before: Chen Yue Inventor before: Wang Fang |