CN109990951A - A kind of product protective capacities test equipment and test method - Google Patents
A kind of product protective capacities test equipment and test method Download PDFInfo
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- CN109990951A CN109990951A CN201711484783.5A CN201711484783A CN109990951A CN 109990951 A CN109990951 A CN 109990951A CN 201711484783 A CN201711484783 A CN 201711484783A CN 109990951 A CN109990951 A CN 109990951A
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- 238000012360 testing method Methods 0.000 title claims abstract description 120
- 230000001681 protective effect Effects 0.000 title claims abstract description 38
- 238000010998 test method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 2
- 238000010977 unit operation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 17
- 239000007858 starting material Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of product protective capacities test equipment and test methods, product protective capacities test equipment includes support device, the sealing device for accommodating test product is provided in support device, sealing device includes water tank and tank lid, water tank and tank lid are tightly connected by gripping mechanism, water tank is provided with that exhaust valve is gentle to connect mouth, and gas connects mouth and is connected with for providing air pressure into water tank and generating inside and outside test product the compressed air source unit of pressure difference, and compressed air source unit is electrically connected electric control gear.The present invention is based on electric control gears to realize automatic test, and at low cost, occupied space is few, and test method is simple and test effect is obvious.It need to only can be realized simultaneously for the test of different protective capacities requirement products by adjusting part or parameter, test equipment has very strong flexibility.
Description
Technical field
The present invention relates to the product test fields for having protective capacities to require, and are related specifically to a kind of for starter and its zero
The test equipment and test method of component protective capacities test.
Background technique
The product that requires with protective capacities, equipment are generally required to the degree of protection of their shell according to country
The relevant regulations of standard carry out experiment test, are wanted with ensuring that the degree of protection of the product, equipment meets or exceeds national standard
It asks.
Starter and its components are frequently encountered dust in application environment, muddy, water, machine oil, diesel oil and some corruption
The presence of corrosion solution；If most solid substance and liquid solution will cause machinery into inside starter or its components
Clamping stagnation, corrosion of metal, the mechanical disorders such as circuit damage.Therefore starter and its components belong to the production required with protective capacities
Product need to carry out experiment test to its degree of protection,
The test mode and requirement being usually taken are completed based on electrical equipment degree of protection as defined in GB 4208.Foundation
The typical starter and its assembly degree of protection such as IPX6 of the requirement, it is desirable that as follows:
It is sprayed water, and met to the shell of subject product in all possible direction using the code test nozzle of standard requirements
Following condition:
1. nozzle inside diameter: 12.5mm；
2. water flow: (100 ± 5) L/min；
3. hydraulic pressure: being adjusted according to regulation water flow；
4. the central part of main water flow: the circle for being about 120mm from diameter at nozzle 2.5m；
5. every square metre of water spraying time of case surface: more 1min；
6. test period: minimum 3min；
7. nozzle is to case surface distance: 2.5m~3m.
If protection level requirements are IPX7, need to meet claimed below:
Using standard requirements caisson, subject product shell submerges by installation condition as defined in factory, and
Meet following condition:
1. the minimum point of shell of the height less than 850mm, should be lower than water surface 1000mm；
2. height is equal to or more than the shell highest point of 850mm, water surface 150mm should be lower than；
3. duration of test runs 30min；
4. water temperature and the style temperature difference are not more than 5k.
In addition to this kind of Soft pack experiments of sealing performance method is also given in GBT 15171:
1. being put into suitable distilled water in vacuum chamber, sample is fixed on specimen holder, then is dipped in water.This
When, the top of sample must not be lower than 25mm at a distance from the water surface.
2. covering the sealing cover of vacuum chamber, exhaust valve is closed, then open vacuum tube valves to vacuum chamber.
3. the leakage situation of observation sample when vacuumizing and during vacuum is kept, depending on it, whether there is or not continuous bubbles to generate.It is single
A discrete bubble is not intended as sample leakage.
4. opening air inlet pipe valve, communicate vacuum chamber with atmosphere, open sealing cover, sample is taken out, by the water on its surface
It cleans, Kaifeng checks inside sample whether there is test water infiltration.
Thus it sees, the test mode being usually taken is needed according to different degree of protection using different test equipments, right
Test equipment requires high.Existing test equipment is flexible poor, and the degree of automation is low, and test method operation difficulty is big, the test period
It is long；And test effect is difficult to intuitive judgment, it is necessary to observe internal state after disassembling to product.Thus it is more suitable for very
The exemplar of limited quantity carries out in the laboratory of test analysis；It is not particularly suited for test beat, Flexible Equipment, test automation
Degree, testing cost, the batch production scene that test validity has higher requirements；Poor universality.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, it is to propose that the present invention, which solves its first technical problem,
A kind of product protective capacities test equipment, high degree of automation is easy to operate, versatile, and test effect is more intuitive.
As the same technical concept, another technical problem solved by the invention is to provide a kind of above-mentioned production of use
The low protective capacities test method of product protective capacities test equipment.
In order to solve the first technical problem mentioned above, the technical scheme adopted by the invention is that: a kind of product protective capacities is surveyed
Try equipment, comprising: support device, the support device are provided with the sealing device for accommodating test product, the sealing device packet
Water tank and tank lid are included, the water tank and the tank lid are tightly connected by gripping mechanism, and the water tank is provided with exhaust valve
Gentle to connect mouth, the gas connects mouth and is connected with for providing air pressure into the water tank and generating pressure difference inside and outside the test product
Compressed air source unit, the compressed air source unit is electrically connected electric control gear.
Further, the compressed air source unit includes the air pump being driven by motor.
Further, the electric control gear includes main circuit and logic control circuit；
The main circuit includes: power supply adaptor, with the relay normally open switch of the motor joining for driving the air pump and
The relay for controlling the relay normally open switch, is serially connected with the first relay between the power supply adaptor and the relay
Normal open switch；
The logic control circuit include: the change-over switch being serially connected with the power supply adaptor, position switch and
Master control circuit；The master control circuit includes the first circuit parallel with one another, second servo loop, tertiary circuit, the 4th circuit,
Five circuits and the 6th circuit；
First circuit include the second relay normally closed switch and concatenated with the second relay normally closed switch two
Parallel branch, wherein a branch connects first time relay, another branch connects to be controlled by the first time relay
First time relay normally closed switch and the first relay；
The second servo loop includes the first pressure control switch being serially connected, the first relay normally closed switch and third
Relay, the first relay normally closed switch are controlled by first relay；
The tertiary circuit includes second pressure control switch and first the second relay normally open switch, second pressure
After power control switch and first the second relay normally open switch in parallel with third relay normally closed switch and the second relay
Device concatenation, the third relay normally closed switch are controlled by the third relay, the second relay control described second
Relay normally open switch；
4th circuit includes that second the second relay normally open switch and the 4th relay normally open switch, and second
A second relay normally open switch with after the 4th relay normally open switch in parallel with third relay described in another
Normally closed switch concatenation, the third relay normally closed switch concatenate three three branches in parallel, and first article of branch connects the 4th relay
Device, Article 2 branch connect second time relay, and Article 3 branch connects the third time relay；
5th circuit includes the second time relay normal open switch being serially connected, the first LED pipe, and described second
Time relay normal open switch is controlled by second time relay；
6th circuit includes the second time relay normally closed switch, second time relay normally closed switch concatenation
There are two parallel branches, a branch connects the second LED pipe, and another branch connects third time relay normal open switch and third
LED pipe.
Further, the first time relay normally closed switch is that on-delay disconnects switch, second time relay
Device normally closed switch is that on-delay disconnects switch, and second time relay normal open switch is on off delay closure switch, institute
It states third time relay normal open switch on-delay closure and power cut off delay disconnects switch.
Further, the exhaust valve is electric-controlled type exhaust valve, and the master control circuit further includes the 7th circuit, the described 7th
Circuit include be serially connected the 5th relay normally open switch and the electric-controlled type exhaust valve, the 5th circuit further include with
5th relay of the first LED pipe concatenation, the 5th relay control the 5th relay normally open switch.
Further, the electric control gear includes the display box for showing automatically controlled information, and the electric control gear is relay
Control circuit device or programmable integrated circuit device.
Further, the support device includes cabinet, and the electric control gear is set in the cabinet.
Further, switching mechanism is provided between the tank lid and the cabinet, the switching mechanism includes being fixed on
The bracket of the cabinet, and the rocker arm hinged with the bracket, the one end are connect with the tank lid, the other end with put
Set mass configuration support is connected, the tank lid or the rocker arm be connected with handle.
Further, the product protective capacities test equipment further includes cleaning system, and the cleaning system includes control water platform
And air gun.
To solve above-mentioned second technical problem, the technical scheme adopted by the invention is that:
A kind of product protective capacities test method, using product protective capacities test equipment described above, including it is following
Step:
A, the tank lid in the sealing device is opened, product to be measured is directly placed into or is put into mobile bracket
In the water tank, and liquid is injected to predetermined altitude H into the water tank；
B, the tank lid is closely connect with the water tank by the gripping mechanism, starting electric control gear switch, prison
Measuring pressure in the water tank, in predetermined pressure domain P1, the compressed air source unit operation is to adjust the pressure in the water tank；
C, when monitoring that pressure reaches predetermined pressure P2 in the water tank in preset time T 1, the compressed air source unit stops
Operation；During P2 pressure maintaining continues, until reaching the electric control gear after predetermined dwell time T2 gives " test is completed " warning, and benefit
Restore the pressure in the water tank with the exhaust valve being connected with the water tank, until reaching predetermined pressure domain P1；
When monitoring that pressure is not up to predetermined pressure P2 in the water tank in preset time T 1, if at this time the time without departing from
Preset time T 1, the compressed air source unit continue to run the pressure adjusted in the water tank, until the water in preset time T 1
Pressure reaches predetermined pressure P2 in case, and test continues；Monitor that pressure is not up to predetermined in the water tank in preset time T 1
When pressure P2, if the time, the compressed air source unit was out of service, terminates in advance test beyond preset time T 1 at this time；
D, as needed, can one wheel test continue pressure maintaining P2 during or just at the end of, by manually controlling
The non-self-holding switch stated in circuit device resets, and the dwell time is recalculated, the extended testing system dwell time；
E, when during the test, the protective capacities of test product is not up to preset requirement, test product protects bad place
Significant performance is had, test effect is intuitively shown；
F, test terminates, and closes system, takes out test product, and test product surface is cleared up in cleaning system；
G, the input information for switching or changing the electric control gear by manually controlling the electric control gear enters a new round
Test.
After above-mentioned technical proposal, the beneficial effects of the present invention are:
The protective capacities test equipment structure is simple, and wherein support device, sealing device, compressed air source unit mention for product testing
The testing conditions of high request high standard are supplied.
And the test of product protective capacities is realized based on electric control gear, and entire test process can be realized automatically,
It operates simpler.And in the short time can intuitive judgment go out whether product meets preassigned requirement, be greatly improved
Test beat；And it is at low cost, occupied space is few, and operation is simple, while only needing to pass through tune for different protective capacities demands
Whole part or parameter can be realized, so that equipment be enabled to have very strong flexibility.The equipment is especially suitable for test beat
There is rigors production scene with test condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of product of the present invention protective capacities test equipment；
Fig. 2 is the test method flow chart using Fig. 1 test equipment；
Fig. 3 is the circuit diagram for realizing the electric control gear of Fig. 2 test method；
In figure: 1- sealing device, 11- water tank, 12- display box, 13- tank lid, 131- handle, 14- switching mechanism, 141-
Bracket, 142- rocker arm, 15- gripping mechanism, 16- are supported with object, 2- support device, 21- cabinet, 22- mobile bracket, 3- cleaning
System, 31- control water platform, and 4- gas connects mouth, 51- knife switch, 52- knife switch, 53- relay, 53a- relay normally open switch,
54- air pump, 55- power supply adaptor, 56- position switch, the second relay of 57-, 57a- the second relay normally closed switch 57b-
Two relay normally opens switch, the second relay normally open of 57c- switch, 58- first time relay, 58a- first time relay
Normally closed switch, 59- first pressure control switch, 60- second pressure control switch, the 4th relay of 61-, the 4th relay of 61a-
Normal open switch, the first relay of 62-, 62a- the first relay normally closed switch, the first relay normally open of 62b- switch, 63- third
Relay, 63a- third relay normally closed switch, second time relay of 64-, 64a- second time relay normal open switch,
64b- second time relay normally closed switch, the 65- third time relay, 65a- third time relay normal open switch, 66-
Five relays, the 5th relay normally open of 66a- switch, the first LED pipe of 67-, the second LED pipe of 68-, 69- third LED pipe, 70- row
Air valve, 71- change-over switch.
Specific embodiment
In conjunction with attached drawing, the present invention is described in further detail with its specific embodiment.
In description of the invention, it is to be understood that "left", "right", etc. the orientation or positional relationships of descriptions be based on attached drawing
Orientation and positional relationship, it is only for convenient for simplify description, be not considered as limiting the invention.
As shown in Figure 1, product protective capacities test equipment mainly include accommodate test product sealing device 1, support it is close
The support device 2 of seal apparatus 1, support device 2 include cabinet 21 and the mobile bracket 22 for consigning product to be measured, sealing device 1
Including be fixed on cabinet 21 water tank 11,11 upper cover of water tank be equipped with tank lid 13, be provided with water between water tank 11 and cabinet 21
Case pad.Water tank 11 is tightly connected with tank lid 13 by gripping mechanism 15, i.e., by the clamping screw on gripping mechanism 15 with spiral shell
Tank lid 13 is pressed on water tank 11 by the mode that bolt screws, and guarantees to be confined space inside water tank 11.Tank lid 13 and cabinet
Switching mechanism 14 is provided between 21.The switching mechanism 14 includes the bracket 141 that is fixed on cabinet 21, and with the bracket 141
Hinged rocker arm 142,142 one end of rocker arm are connect with tank lid 13,142 other end of rocker arm and the configuration support 16 for placing mass
Be connected, tank lid 13 or rocker arm 142 be connected with handle 131.
Water tank 11 is additionally provided with that exhaust valve is gentle to connect mouth 4, and gas connects mouth 4 and is connected in the water tank 11 to sealing device 1
Air pressure is provided and generates the compressed air source unit of pressure difference inside and outside test product, which includes the air pump 54 being driven by motor,
The motor of air pump 54 is electrically connected with electric control gear, which is set in cabinet 21, and the display box 12 in electric control gear is set
It is placed on cabinet 21.Electric control gear is control relay circuit device or programmable integrated circuit device, such as PLC, monolithic
Machine realizes logic control；The external tester of electric control gear and actuator, such as sensor, pump, valve, LED, buzzer etc..
The product protective capacities test equipment further includes cleaning system 3, and cleaning system 3 includes control water platform 31 and air gun.
The present embodiment with air pump 54 be vacuum pump when, the specifically used process of the equipment is described below:
As shown in Fig. 2, equipment is in use, product to be measured is placed on mobile bracket 22, by the lock on gripping mechanism 15
Tight bolt is unscrewed, and opens gripping mechanism 15, and tank lid 13 is connected the right side of rocker arm 142 and 141 hinged support of bracket, rocker arm 142
It is placed with mass in connected counterweight support 16 on the left of hinged support, in this way when gripping mechanism 15 is opened, in mass 2
The right side of effect lower shake-changing arm 142 drives the tank lid 13 of water tank 11 that can rise to after certain altitude and is limited part limit (limit
Part is not shown in the figure), so that tank lid 13 be made to keep nature opening state.
Mobile bracket 22 is held, product to be measured is placed in water tank 11 (or product to be measured is directly put into water tank
In 11), to water tank 11 inside inject selected liquid to predetermined altitude H, it is water, predetermined altitude H that liquid is selected in the present embodiment
It is set to the height until when product to be measured is covered with the liquid completely；Tank lid 13 is closed later, engages gripping mechanism 15, and will card
Clamping screw on tight device 15 is tightened, and tank lid 13 and water tank 11 is tightly connected, it is ensured that sealing effect.
Start electric control gear switch, can voluntarily be carried out according to process shown in Fig. 2 inside water tank 11.Monitor that pressure exists
When the P1 of predetermined pressure domain, air pump 54 (being selected as vacuum pump) is run to adjust pressure in water tank 11；If supervised in preset time T 1
When measuring pressure and reaching predetermined pressure P2, vacuum pump is out of service, during P2 pressure maintaining continues, completes automatically controlled after predetermined dwell time T2
Device, which is given, warns " test is completed ", and (pressure maintaining test will be continued until when completing setting pressure maintaining by not completing dwell time T2
Between after T2 system give warn " test is completed "), and the pressure in water tank is restored to predetermined pressure domain P1, is done for lower whorl test
Prepare；
If monitor that pressure is not up to predetermined pressure P2 in preset time T 1, vacuum pump runing time is judged at this time
Whether more than T1, when being less than T1, vacuum pump continues to run pressure regulation, until it is laggard to reach predetermined pressure P2 in preset time T 1
Enter next step process；If when more than T1, it is possible to which there are line faults, and control vacuum pump is out of service, cannot be introduced into down at this time
One step process, test terminate in advance；
As needed, can one wheel test continue pressure maintaining P2 during or just at the end of, pass through manual control circuit
Non- self-holding switch (normally closed push button switch) in device resets, and the dwell time resets, and recalculates, i.e., artificially freely extends again
Test the dwell time.
Find that product surface part there are continuous air bubbles to emerge, that is, shows that product protective capacities does not reach and want in test process
It asks, if instead product surface is without continuous air bubbles after testing process, then product protective capacities is qualified.In test process
Duration, atmospheric pressure value, the information such as alarm may be displayed on display box 12.
Test is completed 11 internal pressure of rear water box and is restored, and opens tank lid 13, mobile bracket 22 is taken out, control is placed on
On water platform 31, product surface then is quickly cleaned with equipment such as air guns, cleaning object is flowed out by 31 drain outlet of control water platform.
Test can manually control electric control gear switch or change input information and carry out follow-on test or change batch test.Such as
Fruit has particular demands to preset time therein, pressure set domain, by adjusting control relay circuit setup time relay,
Pressure transducer achieves the goal；Or the setting of certain logic is completed based on programmable integrated circuit device.The thus set equipment
There is very strong flexibility, equipment cost can be saved under a variety of demands.
A kind of situation of the concrete application in reality:
Sealing space absolute pressure value is set into P2=0.06MPa (60KPa), while inside starter or relay product
Atmospheric pressure value is a standard atmospheric pressure, and P0=0.1MPa (100KPa) generates draught head in starter or relay both ends in this way
For P0-P2=0.04MPa；The numerical value can show that absolute pressure is shown in common air gauge by equipment such as such as air gauges
And the difference of atmospheric pressure, air gauge shows that numerical value is P2-P0=-0.04Mpa under above-mentioned case.It is equivalent to and the water of 4m depth is provided
Pressure has greatly saved the test space without the 4m depth of water is provided at the scene.
Fluid flow rate in product hole is directly proportional to hole both ends pressure, when product is wrapped up by liquid completely, passes through system
The pressure higher than level of protection is made, product protection weakness can be aggravated and generate more significant fluid flow phenomena, tested
It, so in a short time can intuitive judgment it can be seen that the undesirable product vulnerable area of protection continuously overflows a large amount of bubbles in journey
Whether product meets preassigned requirement out, and the pressure maintaining testing time, T2 can be reduced within 1 minute, is greatly improved test
Beat.
The present embodiment is based on testing procedure process shown in Fig. 2 with the relay of the switch controlled using a variety of relays with it
Its control principle is specifically described for control circuit device:
As shown in figure 3, control relay circuit corresponding with this testing process includes main circuit and logic control circuit.
After knife switch 51,52 on main circuit is closed, AC power source accesses circuit.It is converted alternating current to by power supply adaptor 55
The DC voltage needed using power supply adaptor 55 is S-50-24 Switching Power Supply in this example, converts alternating current to 24V direct current
Voltage, the direct-flow voltage regulation source as logic control circuit.
For operator, testing process can be completed by a change-over switch 71.When change-over switch 71 is switched on, water
Case lid 13 is not switched on, and position switch 56 (determining on off operating mode according to 13 position of tank lid of sealing device 1) is now in closure
State, after the completion of last round of test, when the pressure in water tank 11 does not restore, second relay normally open switch 57b, 57c is still set to
In closed state, the second relay 57 must be electric, and the second relay 57 is the control relay of second relay normally open switch 57b, 57c
Device, by self-sustaining enable the second relay 57 and the 4th relay 61 persistently it is electric, and make the second relay normal
Make and break is closed 57a and is in an off state, and the second relay normally closed switch 57a is disconnected prevent the first relay 62 is electric from obtaining, so
First relay normally open switch 62b is remained open, and relay 53 cannot obtain electric, and relay normally open switch 53a is remained open, vacuum
Air pump inoperative.After second time relay, 64 preset time T 2, the switch of control is made a response, the second time relay
Device normal open switch 64a closure, the second time relay normally closed switch 64b are disconnected, and the 5th relay 66 must be electric, and the 5th relay is normal
Switch 66a closure, exhaust valve 70 (for electric-controlled type exhaust valve) work.
When exhaust valve 70 acts on 11 internal pressure of lower header and reverts to predetermined pressure domain P1, the first pressure under the pressure
Control switch 591 enters closed state, and second pressure control switch 60 is in an off state, the first relay normally closed switch 62a
For closed state, thus third relay 63 it is electric；Third relay 63 is the control relay of third relay normally closed switch 63a
Therefore device, third relay normally closed switch 63a are disconnected, lead to 57 power loss of the second relay, the second relay 57 described above
Self-sustaining be released from, the second relay normally closed switch 57a closure, thus first time relay 58 and the first relay 62 must
Electricity, vacuum pump operation pressure regulation, first time relay 58 are connected after predetermined time T1, and the pressure in water tank 11 is within the T1 time
Reach predetermined pressure P2 value, (in addition, if beyond the T1 time because certain failures cause 11 internal pressure of water tank to be unable to adjust to predetermined
When pressure P2 value, vacuum pump out of service itself can will not be worked long hours with protecting.) second pressure is controlled and opened under the pressure
It closes 60 and enters closed state, first pressure control switch 59 is in an off state, and the second relay 57 must be electric, and the second relay is normal
Make and break is closed 57a and is disconnected, and 62 power loss of first time relay 58 and the first relay, vacuum pump is out of service, tests into pressure maintaining
Stage.At the same time, the second relay 57 obtains cable order the second relay normally open switch 57b closure and is in circuit self-locking state,
Another the second relay normally open switch 57c closure causes the 4th relay switch 61a and the 4th relay 61 to be in shape of controlling oneself
State, while second time relay 64 and the third time relay 65 start timing.When the second 64 predetermined pressure maintaining of the time relay
Between be T2, before reaching dwell time T2, second time relay 64 control the second time relay normally closed switch 64b still locate
It in on-state, gives the second LED pipe 68 electric signal, shows " in test " signal in display box 12.When second time relay
After 64 preset time Ts 2, the switch of control is made a response, the second time relay normal open switch 64a closure, when second
Between relay normally closed switch 64b disconnect, the first LED pipe 67 and the 5th relay 66 electric, display " test completion ".
The 5th relay normally open switch 66a is closed at this time, and exhaust valve 70 starts to be vented, and system, which is in, restores pressure process,
It prepares for next round test.
The setting of the third time relay 65 is in order to extend the dwell time；65 preset time of the third time relay be greater than etc.
Be in the characteristics of T2, third time relay normal open switch 65a the third time relay 65 it is electric after time-delay closing, and
The third time relay 65 is delayed after powering off and disconnects；In described in the upper section, the second time relay normally closed switch 64b disconnect after the
Three time relay normal open switch 65a closure, a wheel test process is completed at this time.When exhaust valve 70 does not have started exhaust,
Change-over switch 71 (in the case where non-self maintained push button switch) in operator's trigger circuit resets, and second time relay is normally closed
Switch 64b can be closed again, but exhaust valve 70 no longer works at this time, and the third time relay 44 powers off, but third time relay
Device normal open switch 65a needs could disconnect after a certain time, and third LED pipe 69 can react under this state, prompt behaviour
It is interrupted, pressing inside water tank 11 at this time still is by force P2, and testing process can be again introduced into test completion shape after running a period of time
State, can be taking human as the lengthening dwell time by increasing this mode of the third time relay 65；It in addition can be by accessing timing
The mode of device records break time.
When pressure restores to preset pressure domain P1, first pressure control switch 59 is closed, third relay 63 it is electric, lead
Cause third relay normally closed switch 63a disconnect, final result is that exhaust valve 70 stops working, and vacuum pump is run again, system into
Enter next round working condition.Or tank lid 13 is opened by operator, whole system is placed in original state by position switch 56,
This batch of tested product is taken out, tank lid 13 is closed after next group product is put into water tank 11, into new round test process.
Thus the follow-on test that may be implemented that product is surveyed to a batch is seen；If necessary to be surveyed to successive batches product
Examination, then can be by closing change-over switch 71；Or change-over switch 71 is kept to be closed, by opening tank lid 13, control position
Switch 56 disconnects；Whole system is enabled to restPose.
The non-self-holding normally closed switch disconnected when change-over switch 71 is set as only in pressing, and position switch 56 is set as having
When having the switch of on-off two states, the automation of testing process equally can be preferably realized, it is similar with process above, herein
It is not added and repeats.
In water tank 11 monitoring of pressure can by water tank 11 be arranged pressure sensor come to pressure in water tank 11 into
Row real-time monitoring.
Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art
Belong to the protection scope of the appended claims of the present invention.
Claims (10)
1. a kind of product protective capacities test equipment, comprising: support device, which is characterized in that
The sealing device for accommodating test product is provided in the support device, the sealing device includes water tank and tank lid,
By gripping mechanism sealed connection, the water tank is provided with that exhaust valve is gentle to connect mouth, the gas for the water tank and the tank lid
It connects mouth and is connected with the compressed air source unit for generating pressure difference for the offer air pressure into the water tank and inside and outside the test product, it is described
Compressed air source unit is electrically connected electric control gear.
2. product protective capacities test equipment according to claim 1, which is characterized in that the compressed air source unit includes by electricity
The air pump of machine driving.
3. product protective capacities test equipment according to claim 2, which is characterized in that the electric control gear includes main electricity
Road and logic control circuit；
The main circuit includes: power supply adaptor, with the relay normally open switch for the motor joining for driving the air pump and control
The relay of the relay normally open switch, is serially connected with the first relay normally open between the power supply adaptor and the relay
Switch；
The logic control circuit includes: the change-over switch, position switch and master control being serially connected with the power supply adaptor
Circuit processed；The master control circuit includes the first circuit parallel with one another, second servo loop, tertiary circuit, the 4th circuit, the 5th time
Road and the 6th circuit；
First circuit include the second relay normally closed switch and concatenated with the second relay normally closed switch two simultaneously
Join branch, wherein a branch connects first time relay, another article of branch is connect by the of first time relay control
One time relay normally closed switch and the first relay；
The second servo loop includes the first pressure control switch being serially connected, the first relay normally closed switch and third relay
Device, the first relay normally closed switch are controlled by first relay；
The tertiary circuit includes second pressure control switch and first the second relay normally open switch, the second pressure control
System switch and first the second relay normally open switch in parallel after with third relay normally closed switch and the second relay string
It connects, the third relay normally closed switch is controlled by the third relay, and second relay controls second relay
Device normal open switch；
4th circuit includes second the second relay normally open switch and the 4th relay normally open switch, second institute
State the second relay normally open switch with it is normally closed with third relay described in another after the 4th relay normally open switch in parallel
Switch concatenation, the third relay normally closed switch concatenate three three branches in parallel, and first article of branch connects the 4th relay, the
Two branches connect second time relay, and Article 3 branch connects the third time relay；
5th circuit includes the second time relay normal open switch being serially connected, the first LED pipe, second time
Relay normally open switch is controlled by second time relay；
6th circuit includes the second time relay normally closed switch, and second time relay normally closed switch is serially connected with two
Parallel branch, a branch connect the second LED pipe, and another branch connects third time relay normal open switch and third LED pipe.
4. product protective capacities test equipment as claimed in claim 3, which is characterized in that the first time relay is normally closed
Switch disconnects switch for on-delay, and second time relay normally closed switch is disconnected for on-delay and being switched, and described second
Time relay normal open switch is on off delay closure switch, third time relay normal open switch on-delay closure and
Power cut off delay disconnects switch.
5. product protective capacities test equipment as claimed in claim 4, which is characterized in that the exhaust valve is electric-controlled type exhaust
Valve, the master control circuit further include the 7th circuit, and the 7th circuit includes that the 5th relay normally open being serially connected is opened
It closes and the electric-controlled type exhaust valve, the 5th circuit further includes the 5th relay concatenated with first LED pipe, and described the
Five relays control the 5th relay normally open switch.
6. product protective capacities test equipment according to claim 5, which is characterized in that the electric control gear includes being used for
Show that the display box of automatically controlled information, the electric control gear are control relay circuit device or programmable integrated circuit device.
7. product protective capacities test equipment according to claim 1, which is characterized in that the support device includes machine
Cabinet, the electric control gear are set in the cabinet.
8. product protective capacities test equipment according to claim 7, which is characterized in that the tank lid and the cabinet
Between be provided with switching mechanism, the switching mechanism includes the bracket for being fixed on the cabinet, and with the bracket is hinged shakes
Arm, the one end are connect with the tank lid, and the other end is connected with the configuration support for placing mass, the tank lid
Or the rocker arm be connected with handle.
9. product protective capacities test equipment as described in claim 1, which is characterized in that the product protective capacities test is set
Standby further includes cleaning system, and the cleaning system includes control water platform and air gun.
10. a kind of product protective capacities test method, which is characterized in that surveyed using product protective capacities described in claim 1
Try equipment, comprising the following steps:
A, the tank lid in the sealing device is opened, product to be measured is directly placed into or is put into mobile bracket described
In water tank, and liquid is injected to predetermined altitude H into the water tank；
B, the tank lid is closely connect with the water tank by the gripping mechanism, starting electric control gear switch monitors
For pressure in predetermined pressure domain P1, the compressed air source unit operation is to adjust the pressure in the water tank in the water tank；
C, when monitoring that pressure reaches predetermined pressure P2 in the water tank in preset time T 1, the compressed air source unit stops fortune
Row during P2 pressure maintaining continues, until reaching the electric control gear after predetermined dwell time T2 gives " test is completed " warning, and utilizes
The exhaust valve being connected with the water tank restores the pressure in the water tank, until reaching predetermined pressure domain P1；
When monitoring that pressure is not up to predetermined pressure P2 in the water tank in preset time T 1, if at this time the time without departing from default
Time T1, the compressed air source unit continue to run the pressure adjusted in the water tank, until in preset time T 1 in the water tank
Pressure reaches predetermined pressure P2, and test continues；Monitor that pressure is not up to predetermined pressure in the water tank in preset time T 1
When P2, if the time, the compressed air source unit was out of service, terminates in advance test beyond preset time T 1 at this time；
D, as needed, can one wheel test continue pressure maintaining P2 during or just at the end of, by manually controlling the electricity
Non- self-holding switch in the device of road resets, and the dwell time is recalculated, the extended testing system dwell time；
E, when during the test, the protective capacities of test product is not up to preset requirement, test product protects bad place to have
Significant performance, intuitively shows test effect；
F, test terminates, and closes system, takes out test product, and test product surface is cleared up in cleaning system；
G, the input information for switching or changing the electric control gear by manually controlling the electric control gear enters new round test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484783.5A CN109990951A (en) | 2017-12-29 | 2017-12-29 | A kind of product protective capacities test equipment and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484783.5A CN109990951A (en) | 2017-12-29 | 2017-12-29 | A kind of product protective capacities test equipment and test method |
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| CN109990951A true CN109990951A (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711484783.5A Pending CN109990951A (en) | 2017-12-29 | 2017-12-29 | A kind of product protective capacities test equipment and test method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338318A (en) * | 1971-11-18 | 1973-11-21 | Cross Co | Leak detector unit |
| GB1426556A (en) * | 1972-05-05 | 1976-03-03 | British Gas Corp | Vacuum proving apparatus for plant using gaseous fuel and plant having such arrangement |
| CN203465064U (en) * | 2013-09-11 | 2014-03-05 | 浙江茗熔电器保护系统有限公司 | Circuit control system of sealing performance detection equipment |
| CN204065361U (en) * | 2014-08-04 | 2014-12-31 | 北京佩特来电器有限公司 | Starter wet type bell housing stand durability test apparatus |
| CN204330246U (en) * | 2015-01-13 | 2015-05-13 | 四川新健康成生物股份有限公司 | A kind of movable type general-purpose device automatically detected for impermeability |
| CN204373858U (en) * | 2015-02-02 | 2015-06-03 | 深圳市中孚能电气设备有限公司 | A kind of automatic shutter waterproof tester |
| CN106840526A (en) * | 2017-01-03 | 2017-06-13 | 歌尔股份有限公司 | Electronic product waterproof tester |
| CN206387543U (en) * | 2016-12-06 | 2017-08-08 | 群光电子(苏州)有限公司 | Waterproof test tool |
| CN207717298U (en) * | 2017-12-29 | 2018-08-10 | 北京佩特来电器有限公司 | A kind of product protective capacities test equipment |
-
2017
- 2017-12-29 CN CN201711484783.5A patent/CN109990951A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338318A (en) * | 1971-11-18 | 1973-11-21 | Cross Co | Leak detector unit |
| GB1426556A (en) * | 1972-05-05 | 1976-03-03 | British Gas Corp | Vacuum proving apparatus for plant using gaseous fuel and plant having such arrangement |
| CN203465064U (en) * | 2013-09-11 | 2014-03-05 | 浙江茗熔电器保护系统有限公司 | Circuit control system of sealing performance detection equipment |
| CN204065361U (en) * | 2014-08-04 | 2014-12-31 | 北京佩特来电器有限公司 | Starter wet type bell housing stand durability test apparatus |
| CN204330246U (en) * | 2015-01-13 | 2015-05-13 | 四川新健康成生物股份有限公司 | A kind of movable type general-purpose device automatically detected for impermeability |
| CN204373858U (en) * | 2015-02-02 | 2015-06-03 | 深圳市中孚能电气设备有限公司 | A kind of automatic shutter waterproof tester |
| CN206387543U (en) * | 2016-12-06 | 2017-08-08 | 群光电子(苏州)有限公司 | Waterproof test tool |
| CN106840526A (en) * | 2017-01-03 | 2017-06-13 | 歌尔股份有限公司 | Electronic product waterproof tester |
| CN207717298U (en) * | 2017-12-29 | 2018-08-10 | 北京佩特来电器有限公司 | A kind of product protective capacities test equipment |
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