CN110319980A - A kind of underwater dynamic water-proof test device and its control method - Google Patents
A kind of underwater dynamic water-proof test device and its control method Download PDFInfo
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of underwater dynamic water-proof test device and its control methods.On the one hand, the present invention provides a kind of underwater dynamic water-proof test device, including controller, water pump and the driving motor connecting with water pump；It further include closed-loop-pipeline, water inlet pipe is provided on closed-loop-pipeline, guide frame and test cabin also are sequentially installed with along water sport direction in closed-loop-pipeline, pump intake, the pump outlet of water pump are set in closed-loop-pipeline, and guide frame is located at pump outlet side and for becoming being axially moved the rotary motion for the water that water pump is extracted out；Pressure-detecting device and flow monitor are additionally provided in closed-loop-pipeline, driving motor, pressure-detecting device and flow monitor are connect with controller signals respectively.On the other hand, the present invention also provides a kind of underwater dynamic water-proof test control method using above-mentioned apparatus, a flow velocity and pressure test may be implemented through the invention in one, testing time and test job amount can be effectively reduced.
Description
Technical field
The invention belongs to waterproof test field more particularly to a kind of underwater dynamic water-proof test devices, further relate to a kind of water
Lower dynamic water-proof test control method.
Background technique
Currently, many electronic products require to carry out dynamic water-proof test verification, especially, the need being commonly used under water
The electron and electrician product to be moved needs to carry out dynamic water-proof performing leak test inspection in research and development and production process, to protect
Demonstrate,prove its service performance.It is desirable to which carrying out dynamic water-proof test verification includes carrying the water-proof watch used under swimming scene, preventing
Sailor's machine, waterproof cameras etc., and including carrying the propeller used, dive electric flashlight, underwater unmanned plane etc. under diving scene.
Currently, product to be measured is needed to be pressed under the pressure of preset requirement when carrying out dynamic water-proof test verification
Power detection, and, it is also necessary to product to be measured is carried out flow rate detection under the water flow velocity of preset requirement, currently, due to that can not protect
Stable flow velocity and its pressure etc. are demonstrate,proved, therefore, can not generally carry out pressure test and flow velocity test simultaneously, therefore, tradition is dynamic
Not only operating difficulties, test effect are bad but also the testing time is long for the inspection of state waterproof test, greatly affected testing efficiency.
Above-mentioned technical problem how is solved, technical barrier urgently to be resolved is become.
Summary of the invention
The purpose of the present invention one is to provide a kind of underwater dynamic water-proof test that can carry out pressure and flow rate detection simultaneously
Device can effectively reduce testing time and test job amount.
The purpose of the present invention two is to provide a kind of control method of the device.
To realize purpose one, the present invention provides a kind of underwater dynamic water-proof test device, including controller, water pump and with
The driving motor of water pump connection；It further includes closed-loop-pipeline, is provided on the closed-loop-pipeline for connecting with external water source
Water inlet pipe in the closed-loop-pipeline is also sequentially installed with guide frame along water sport direction and for placing trial product to be measured
Test cabin, pump intake, the pump outlet of the water pump are set in closed-loop-pipeline, wherein the guide frame is located at
Pump outlet side simultaneously is used to become being axially moved by the rotary motion for the water that water pump is extracted out；It is also set in the closed-loop-pipeline
It is equipped with pressure-detecting device for being detected to the water pressure in closed-loop-pipeline and for the water flow velocity in closed-loop-pipeline
The flow monitor detected, the driving motor, pressure-detecting device and flow monitor are believed with controller respectively
Number connection.
Preferably, the guide frame includes the tube body being mounted on closed-loop-pipeline, is set in the inboard wall of tube body along axial direction
There are several guide vanes.
Preferably, the guide vane length is identical as tube length, and each guide vane is along closed-loop-pipeline water flow
Two lateral sections in direction are arcwall face.
Preferably, it is provided with the drainpipe excluded for water in managing on the closed-loop-pipeline, is arranged on the drainpipe
There is draining control valve, the draining control valve is connect with controller signals.
Preferably, the test cabin upper end is provided with exhaust outlet, and gas exhausting valve, the row are provided on the exhaust outlet
Gas control valve is connect with controller signals, and the test cabin upper end is provided with hermatic door, is provided in the test cabin for producing
The product mounting rack of product installation, the transparency window for observing in test cabin is provided on the hermatic door.
Preferably, the flow monitor and product mounting rack are all set on the center line of closed-loop-pipeline；The pressure
Force checking device is set on test cabin.
Preferably, it is provided with water inlet control valve on the water inlet pipe, booster pump, the pressurization are provided on the water inlet pipe
Pump and water inlet control valve are connect with controller signals respectively.
To realize purpose two, the present invention also provides a kind of underwater dynamic water-proof test control method, this method includes such as
Lower processing step:
Step 1: being sealed after trial product to be measured is fixed in test cabin, on the controller according to trial product to be measured
Test request needs to carry out water pressure and flow rate set；
Step 2: controller is by the signal control of real-time reception pressure-detecting device to water filling in closed-loop-pipeline so that water
Pressure reaches setting value；
Step 3: after closed-loop-pipeline internal water pressure reaches setting value, controller passes through real-time reception flow monitor
Signal controls driving motor and drives water pump, so that the flow velocity of the water in closed-loop-pipeline reaches setting value；
Step 4: after reaching the detection time of setting, controller control driving motor stops working.
Preferably, in step 3, the water pump is elbow type water circulating pump and is selected by uninterrupted,
Middle flow is obtained by following calculation formula,
Wherein, flow when L is the test job of closed-loop-pipeline, maximum flow rate V required when being test job, S are to close
The inner circle sectional area in endless tube road；
Wherein, the metered flow of water pump is not less than L.
Preferably, when starting operation, the revolving speed of controller control driving motor at the uniform velocity increases to flow velocity in closed-loop-pipeline
Reach setting value, then controller by pid algorithm control driving motor revolving speed with control in closed-loop-pipeline flow through it is to be measured
Flow velocity when trial product is constant.
Compared with prior art, the present invention the beneficial effect is that:
In the present invention by set gradually on closed-loop-pipeline water pump, guide frame and test cabin to product into carry out from
Dynamicization waterproof test, water filling cooperation water pump, which is twitched the water cycle operation in closed-loop-pipeline in real time and carried out, in closed-loop-pipeline dynamically prevents
Then water environment carries out pressure and velocity test simultaneously.Wherein, the ingenious place of the present invention is, makes closed loop by the way that water pump is arranged
Water in pipeline is constantly in dynamical state and enables the invention under Dynamic Water test environment, and, the present invention is by changing
Become water pump application environment, i.e. the present invention is not to take out Static Water but take out the Dynamic Water combination water pump in closed-loop-pipeline always and extract out
Only movement is without lift in the closed-loop-pipeline under horizontal plane state for water, to make the water under application environment of the present invention
Pump is compared with the same water pump under traditional application environment, because being to provide Dynamic Water and not needing lift, in the constant feelings of torque
Under condition can laborsaving 3/4 or more, so as to guaranteeing to provide enough power to closed-loop-pipeline without being greatly improved torque
Water pump is caused to damage problem, therefore, the present invention solves traditional technology can only single progress pressure survey in dynamic water-proof test
The problem of examination or flow velocity are tested, a flow velocity and pressure test may be implemented in one, when can effectively reduce test in the present invention
Between and test job amount.Water pump is elbow type water circulating pump and is selected by uninterrupted, Neng Gou in the present invention
In the case where stable testing is effectively ensured, cost is saved, reduces the volume of equipment entirety.It is carried out in the present invention by controller
Flow velocity and water pressure adjust control in real time, can effectively improve the precision of test.Transparency window is set on hermatic door in the present invention
The observation to test process can be effectively improved, intuitive is increased.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic cross-section of guide frame.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
Below.
As shown in Figs. 1-2, a kind of underwater dynamic water-proof test device is connect including controller 1, water pump 3 and with water pump 3
Driving motor 9；It further includes closed-loop-pipeline 2, and the water inlet pipe for connecting with external water source is provided on the closed-loop-pipeline 2
10, in the closed-loop-pipeline 2 guide frame 4 also is sequentially installed with along water sport direction and the examination for placing trial product to be measured
Testing position 5, pump intake, the pump outlet of the water pump 3 are set in closed-loop-pipeline 2, wherein the guide frame 4
In pump outlet side and for becoming being axially moved the rotary motion for the water that water pump 3 is extracted out；In the closed-loop-pipeline 2
It is additionally provided with pressure-detecting device 7 for being detected to the water pressure in closed-loop-pipeline 2 and for in closed-loop-pipeline 2
The flow monitor 8 that water flow velocity is detected, the driving motor 9, pressure-detecting device 7 and flow monitor 8 are distinguished
It is connect with 1 signal of controller.Controller 1 is provided with the touch screen 101 for carrying out human-computer interaction.The present apparatus is additionally provided with for setting
The standby fixing and mounting bracket overally supported.Pressure-detecting device 7 is water pressure sensor, and flow monitor 8 is flow velocity biography
Sensor, controller 1 are PLC.
In the present invention, the guide frame 4 includes the tube body 41 being mounted on closed-loop-pipeline 2, in the tube body 41
Wall is along several guide vanes 42 are axially arranged with, and 42 length of guide vane is identical as 41 length of tube body, and each guiding
Blade 42 is arcwall face along two lateral sections of 2 water (flow) direction of closed-loop-pipeline, i.e., guide vane 42 is arranged along water flowing direction.
The rotary motion of water can be effectively eliminated by going out to design guide frame 4 in pump outlet, is allowed to become being axially moved, for more
Making the rotary motion of water well becomes axial linear movement, and 2 guide frames 4 and two guiding knots can also be set as needed
The corresponding guide vane 42 of structure 4 is staggered rather than on same straight line.
In the present invention, the drainpipe 13 excluded for water in managing, the drainpipe are provided on the closed-loop-pipeline 2
Draining control valve 14 is provided on 13, the draining control valve 14 is connect with 1 signal of controller.
In the present invention, 5 upper end of test cabin is provided with exhaust outlet 15, is provided with gas exhaust inspecting on the exhaust outlet 15
Valve 16, the gas exhausting valve 16 are connect with 1 signal of controller, and 5 upper end of test cabin is provided with hermatic door 51, the test
It is provided with the product mounting rack 6 for product installation in storehouse 5, is provided on the hermatic door 51 for being observed in test cabin 5
Transparency window.Product mounting rack 6 is fixedly installed in test cabin 5 and can be fixed product by clip, can also be tightened.
In the present embodiment, flow monitor 8 and product mounting rack 6 are all set in energy on the center line of closed-loop-pipeline 2
The detection accuracy of the flow velocity of position when enough effectively improving product test, pressure-detecting device 7 is set to can on test cabin 5
The water pressure precision of position when effectively improving product test.
In the present invention, it is provided with water inlet control valve 12 on the water inlet pipe 10, is provided with pressurization on the water inlet pipe 10
Pump 11, the booster pump 11 and water inlet control valve 12 are connect with 1 signal of controller respectively.
In the present invention, water pump 3 uses elbow type water circulating pump, and first can allow pipeline water flow resistance to be minimized；The
Two, water circulating pump also belongs to one kind of axial-flow pump, and axial-flow pump mainly leans on the lift of blade that fluid is guided to outlet, is axial
Into Axial-running Out has many advantages, such as that flow is big, is in all water pump types with the maximum water pump of power situation down-off.Driving electricity
Machine 9 is servo motor, and maximum speed can reach 3000 turns, while have revolving speed adjusting range wide, and speed regulation is stablized, overload capacity
By force.Driving motor 9 is connect by belt pulley 91 with water pump 3.
In the present embodiment, the design of closed-loop-pipeline 2 circularizes circulating line, and water flow is closed simultaneously in pipeline internal circulation flow
Endless tube road 2 is seal and pressure bearing, and the diameter of pipeline can be determined according to the size of test sample, and the size according to test pressure is true
The wall thickness of pipeline is determined, to save cost.Pointer pressure can also be set on closed-loop-pipeline 2, be used to intuitive display pipes
Interior pressure.With transparent sight glasses pressure cover: the effect of pressure cover is to open sealing pipeline to take sample, opens lid, installs sample
After product, simultaneously lock sealing is closed.Band transparent sight glasses are covered simultaneously, facilitate the test mode of observation sample.
A kind of underwater dynamic water-proof test control method, this method includes following processing step:
Step 1: being sealed after trial product to be measured is fixed in test cabin 5, according to trial product to be measured on controller 1
Test request need to carry out water pressure and flow rate set；
Step 2: controller 1 by the control of the signal of real-time reception pressure-detecting device 7 to water filling in closed-loop-pipeline 2 so that
Water pressure reaches setting value；
Step 3: after 2 internal water pressure of closed-loop-pipeline reaches setting value, controller 1 passes through real-time reception flow monitor
8 signal control driving motor 9 drives water pump 3, so that the flow velocity of the water in closed-loop-pipeline 2 reaches setting value；
Step 4: after reaching the detection time of setting, controller 1 controls driving motor 9 and stops working.
In step 3, the water pump 3 is elbow type water circulating pump and is selected by uninterrupted, wherein flow
It is obtained by following calculation formula,
Wherein, flow when L is the test job of closed-loop-pipeline 2, maximum flow rate V required when being test job, S are to close
The inner circle sectional area in endless tube road 2；
Wherein, the metered flow of water pump 3 is not less than L.
When starting operation, the revolving speed that controller 1 controls driving motor 9 at the uniform velocity increases to flow velocity in closed-loop-pipeline 2 and reaches
Setting value, then controller 1 by pid algorithm control driving motor 9 revolving speed with control in closed-loop-pipeline 2 flow through it is to be tested
Flow velocity when product is constant.
The present invention also provides a kind of underwater dynamic water-proof test control method, this method includes processing step:
Step 1: being sealed after trial product to be measured is fixed in test cabin 5, according to trial product to be measured on controller 1
Test need to carry out water pressure and flow rate set；
Step 2: controller 1 by the control of the signal of real-time reception pressure-detecting device 7 to water filling in closed-loop-pipeline 2 so that
Water pressure reaches setting value；
Step 3: after 2 internal water pressure of closed-loop-pipeline reaches setting value, controller 1 passes through real-time reception flow monitor
8 signal control driving motor 9 drives water pump 3, so that the flow velocity of the water in closed-loop-pipeline 2 reaches setting value；
Step 4: after reaching the detection time of setting, controller 1 controls driving motor 9 and stops working.It is testing
After complete, staff can be controlled by controller 1 be depressured in closed-loop-pipeline 2, and reduces setting pressure in water pressure
When value, pressure alarm is carried out always, and water sprays when work people being avoided to open hermatic door 51, influences the progress of work.
In step 3, water pump 3 is elbow type water circulating pump and is selected by uninterrupted that wherein flow passes through
Following calculation formula obtains,
Wherein, flow when L is the test job of closed-loop-pipeline 2, maximum flow rate V required when being test job, S are to close
The inner circle sectional area in endless tube road 2；The metered flow of water pump 3 is not less than L.
When starting operation, the revolving speed that controller 1 controls driving motor 9 at the uniform velocity increases to flow velocity in closed-loop-pipeline 2 and reaches
Setting value, then controller 1 controls the revolving speed of driving motor 9 by pid algorithm to control flow speed stability in closed-loop-pipeline 2.
In the present embodiment, the revolving speed that controller 1 controls driving motor 9 at the uniform velocity increases to flow velocity in closed-loop-pipeline 2 and reaches
Setting value can effectively prevent the unexpected high-speed starting of water pump 3 to cause very big torque, while in closed-loop-pipeline 2, water pump 3 is opened
Water starts the cycle over flowing after dynamic, and the water of 3 water inlet of water pump is not what static but tape speed flowed into, and the rotation of water pump 3 can band
Carry out the continuous superposition of circulating water velocity.The thrust of water pump 3 can be by improving water pump as long as the frictional resistance for being greater than inner wall of the pipe
Revolving speed improves the water velocity of pipeline.So the torque that the torque ratio of water pump routinely makees suction pump is 3 times small, while water pump 3
Revolving speed can also reach the requirement of higher water velocity by improving 3 times of speed.
In the present embodiment, controller 1 controls water inlet control valve 12 and pressurization by 7 live signal of pressure-detecting device
11 work water filling of pump is pressurized, and control draining control valve 12, which discharges water, to be depressured, steady to control 2 internal water pressure of closed-loop-pipeline
It is fixed.Wherein, controller 1 is equally controlled by pid algorithm.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to shape described herein
Formula should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be herein
In contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And what those skilled in the art were carried out changes
Dynamic and variation does not depart from the spirit and scope of the present invention, then all should be within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of underwater dynamic water-proof test device, including controller (1), water pump (3) and the driving motor being connect with water pump (3)
(9)；It is characterized by: it further includes closed-loop-pipeline (2), it is provided on the closed-loop-pipeline (2) for being connect with external water source
Water inlet pipe (10), be also sequentially installed with guide frame (4) along water sport direction and for placing in the closed-loop-pipeline (2)
The test cabin (5) of trial product to be measured, pump intake, the pump outlet of the water pump (3) are set in closed-loop-pipeline (2),
Wherein, the guide frame (4) is located at pump outlet side and for the rotary motion for the water that water pump (3) are extracted out to be become axis
To movement；The pressure inspection for being detected to the water pressure in closed-loop-pipeline (2) is additionally provided in the closed-loop-pipeline (2)
Survey device (7) and the flow monitor (8) for being detected to the water flow velocity in closed-loop-pipeline (2), the driving motor
(9), pressure-detecting device (7) and flow monitor (8) are connect with controller (1) signal respectively.
2. a kind of underwater dynamic water-proof test device according to claim 1, which is characterized in that the guide frame (4)
Including the tube body (41) being mounted on closed-loop-pipeline (2), several guide vanes are axially arranged on the tube body (41) inner wall edge
(42)。
3. a kind of underwater dynamic water-proof test device according to claim 2, which is characterized in that the guide vane (42)
Length is identical as tube body (41) length, and each guide vane (42) is along two lateral sections of closed-loop-pipeline (2) water (flow) direction
Arcwall face.
4. a kind of underwater dynamic water-proof test device according to claim 1, which is characterized in that the closed-loop-pipeline (2)
On be provided with the drainpipe (13) excluded for water in managing, be provided with draining control valve (14), institute on the drainpipe (13)
Draining control valve (14) is stated to connect with controller (1) signal.
5. a kind of underwater dynamic water-proof test device according to claim 1, which is characterized in that on the test cabin (5)
End be provided with exhaust outlet (15), be provided with gas exhausting valve (16) on the exhaust outlet (15), the gas exhausting valve (16) with
The connection of controller (1) signal, test cabin (5) upper end are provided with hermatic door (51), are provided with and are used in the test cabin (5)
The product mounting rack (6) of product installation, the transparency window for observing in test cabin (5) is provided on the hermatic door (51).
6. a kind of underwater dynamic water-proof test device according to claim 5, which is characterized in that the flow monitor
(8) it is all set on the center line of closed-loop-pipeline (2) with product mounting rack (6)；The pressure-detecting device (7) is set to test
On storehouse (5).
7. a kind of underwater dynamic water-proof test device according to claim 1, which is characterized in that on the water inlet pipe (10)
It is provided with water inlet control valve (12), is provided with booster pump (11) on the water inlet pipe (10), the booster pump (11) and water inlet control
Valve (12) processed connect with controller (1) signal respectively.
8. a kind of underwater dynamic water-proof testing and control of any one of -7 underwater dynamic water-proof test devices according to claim 1
Method, which is characterized in that this method includes following processing step:
Step 1: being sealed after trial product to be measured is fixed in test cabin (5), according to trial product to be measured on controller (1)
Test request need to carry out water pressure and flow rate set；
Step 2: controller (1) makes water filling in closed-loop-pipeline (2) by the signal control of real-time reception pressure-detecting device (7)
It obtains water pressure and reaches setting value；
Step 3: after closed-loop-pipeline (2) internal water pressure reaches setting value, controller (1) passes through real-time reception flow monitor
(8) signal control driving motor (9) driving water pump (3), so that the flow velocity of the water in closed-loop-pipeline (2) reaches setting value；
Step 4: after reaching the detection time of setting, controller (1) control driving motor (9) stops working.
9. a kind of underwater dynamic water-proof test control method according to claim 8, which is characterized in that in step 3, institute
It states water pump (3) and is elbow type water circulating pump and is selected by uninterrupted that wherein flow is obtained by following calculation formula
,
Wherein, flow when L is the test job of closed-loop-pipeline (2), maximum flow rate V required when being test job, S is closed loop
The inner circle sectional area of pipeline (2)；
Wherein, the metered flow of water pump (3) is not less than L.
10. a kind of underwater dynamic water-proof test control method according to claim 8 or claim 9, which is characterized in that transported in starting
When row, the revolving speed of controller (1) control driving motor (9) at the uniform velocity increases to closed-loop-pipeline (2) interior flow velocity and reaches setting value, then
Controller (1) is controlled in closed-loop-pipeline (2) by the revolving speed of pid algorithm control driving motor (9) and is flowing through trial product to be measured
When flow velocity it is constant.
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| CN111735607A (en) * | 2020-07-29 | 2020-10-02 | 交通运输部天津水运工程科学研究所 | Rotational flow detection system and method |
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Inventor after: Chen Yue Inventor after: Wan Fang Inventor before: Chen Yue Inventor before: Wang Fang |