CN104713810A - Online salt spray sedimentation rate testing device - Google Patents
Online salt spray sedimentation rate testing device Download PDFInfo
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- CN104713810A CN104713810A CN201510153563.9A CN201510153563A CN104713810A CN 104713810 A CN104713810 A CN 104713810A CN 201510153563 A CN201510153563 A CN 201510153563A CN 104713810 A CN104713810 A CN 104713810A
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- salt spray
- measuring cup
- standard measuring
- testing device
- load cells
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- 150000003839 salts Chemical class 0.000 title claims abstract description 59
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 239000007921 spray Substances 0.000 title claims abstract description 41
- 238000004062 sedimentation Methods 0.000 title abstract description 6
- 238000001556 precipitation Methods 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 12
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 238000005303 weighing Methods 0.000 abstract 4
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses an online salt spray sedimentation rate testing device. The testing device is arranged in a salt spray test box and comprises a standard measuring cup, a weighing sensor and a mounting seat, wherein the standard measuring cup is arranged on the mounting seat; the weighing sensor is arranged in the mounting seat; a signal serial port is formed in the side wall of the salt spray test box; a signal end of the weighing sensor is connected with a signal end of an upper computer by the signal serial port. According to the online salt spray sedimentation rate testing device, the weight of a salt spray reagent in the standard measuring cup is measured by the weighing sensor, and the weight of salt spray sedimentation amount within the unit time can be obtained by calculation, so that a real-time online test is realized in the salt spray testing process, the testing efficiency and accuracy are improved, and the health of test personnel can be protected.
Description
Technical field
The present invention relates to a kind of salt-fog test device, particularly relate to a kind of rate of salt spray precipitation, online testing device.
Background technology
Salt fog in air has larger destruction to military hardware and other various products, is mainly manifested in the aspects such as corrosion effect, electric effect and physical influence.Show by U.S.'s interrelated data statistics, in the field failure of U.S. Military Aircraft, about 50% is that environmental factor causes.Wherein, salt fog accounts for 4%, in nearly 20 environmental factors, occupy the 5th, is a very important monkey wrench.
Salt-fog test is the laboratory environment test method of speeding-up simulation air salt mist environment, being the common method of the salt spray resistance of the antiseptic property of evaluation coated layer, military hardware and other various products, is also one of method of the product antiseptic property qualifications such as military hardware, electric and electronic product, coating and product conformity inspection.The salt-fog test method formulated for various product is had in national standard, GJB, industry standard.
One of key parameter that rate of salt spray precipitation, is evaluated as salt-fog test, its implication is: the salt fog amount of sedimentation in unit interval inherent unit area, be an important parameter of salt-fog test, it can reflect the characteristic of spray flux density and homogeneity.Therefore, the variation range of rate of salt spray precipitation, controls narrower, then the reappearance of test findings better, and confidence level is higher.
Owing to affecting the factor more complicated of rate of salt spray precipitation, no matter current be centrifugal or air-flowing type salt-fog test equipment all cannot be tested in actual mechanical process again and carries out on-line measurement to rate of salt spray precipitation.
Current device manufacturer is supplied to test operation personnel rate of salt spray precipitation, measuring method normally off-line type mensuration.Employing bore is standard funnel and the graduated cylinder (caliber size is by GJB150 requirement) of 100mm, be placed on request in chamber before on-test, according to test demand, selected some cycles, stopping is sprayed, open test case lid, take out graduated cylinder manually carries out reading and record.
There is following defect in tradition rate of salt spray precipitation, measuring method:
1, efficiency is low.In process of the test, generally selected some cycles (usual a few hours), unpacks, and is taken out by graduated cylinder, carries out reading.If one-period or in certain cycle rate of salt spray precipitation, do not meet and test the standard-required followed, then according to standard-required, it is invalid that the process of the test before this should be judged to be, need test from newly.This way efficiency is lower, and test period length is uncontrollable.
2, error is large.Someone operation will cause the possibility of error and error.When rate of salt spray precipitation, reading, the error that artificial reading is introduced cannot be eliminated.Meanwhile, in artificial reading graduated cylinder during sedimentation salt fog liquid level of solution, drop residual on graduated cylinder inwall then cannot read, and this part deviation cannot be eliminated.
3, harm is existed to health.Solution in salt-fog test has certain pungency to human respiratory tract etc., the cycle from salt-fog test environment, take out graduated cylinder, unavoidably certain stimulation is caused to human body skin, respiratory tract, is unfavorable for that test personnel are healthy.
4, metering system, needs artificially manually to record data, comparatively inconvenience.
Summary of the invention
Object of the present invention is just to provide a kind of rate of salt spray precipitation, online testing device to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of rate of salt spray precipitation, online testing device, described proving installation is arranged in salt spray test chamber, described proving installation comprises standard measuring cup, LOAD CELLS and mount pad, described standard measuring cup is arranged on described mount pad, described LOAD CELLS is arranged in described mount pad, the sidewall of described salt spray test chamber is provided with signal serial ports, the signal end of described LOAD CELLS is connected with the signal end of host computer by described signal serial ports.
Particularly, described mount pad comprises bucket cup, bung, saucer and back-up block, described back-up block is arranged in described bucket cup, described saucer is fixedly connected with described back-up block by described LOAD CELLS, described standard measuring cup is placed on described saucer, described bung is arranged on the opening part of described bucket cup, and described bung is provided with through hole, and the opening of described standard measuring cup is arranged on outside described mount pad through described bung.
Further, the opening part of described standard measuring cup is provided with standard snap ring, and the upper surface of described bung, the upper side of described standard snap ring and its downside are provided with outward-dipping chamfering, opposing seal between the outer wall of described bung and described standard measuring cup.
Preferably, the external diameter of described standard measuring cup equals the diameter of described through hole, and the internal diameter of described standard snap ring equals the external diameter of described standard measuring cup.
Standard snap ring can avoid standard measuring cup to fall in bucket cup, and salt fog can be avoided vertically to fall into junction between standard measuring cup and bung simultaneously.
Particularly, described LOAD CELLS and described saucer and described back-up block are all connected by screw.
Beneficial effect of the present invention is:
Rate of salt spray precipitation, online testing device of the present invention is measured by the weight of LOAD CELLS to the salt fog reagent in standard measuring cup; through calculating the weight of salt fog settling amount in the unit interval; realize the real-time in-line testing in salt-fog test process; test efficiency and accuracy can be improved, and protect test personnel healthy.
Accompanying drawing explanation
Fig. 1 is the structural representation of rate of salt spray precipitation, online testing device of the present invention;
Fig. 2 is the signal flow path switch figure of LOAD CELLS of the present invention;
Fig. 3 is the dynamometry schematic diagram of LOAD CELLS of the present invention;
Fig. 4 is the distribution schematic diagram of proving installation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1 and Figure 4, rate of salt spray precipitation, online testing device of the present invention, proving installation 20 comprises standard measuring cup 1, LOAD CELLS 5 and mount pad, standard measuring cup 1 is arranged on mount pad, LOAD CELLS 5 is arranged in mount pad, the sidewall of salt spray test chamber 10 is provided with signal serial ports, the signal end of LOAD CELLS 5 is connected with the signal end of host computer by signal serial ports, mount pad comprises bucket cup 3, bung 2, saucer 4 and back-up block 6, back-up block 6 is arranged in bucket cup 3, saucer 4 is fixedly connected with back-up block 6 by LOAD CELLS 5, standard measuring cup 1 is placed on saucer 4, bung 2 is arranged on the opening part of bucket cup 3, bung 2 is provided with through hole, the opening of standard measuring cup 1 is arranged on outside mount pad through bung 2, the opening part of standard measuring cup 1 is provided with standard snap ring, the upper surface of bung 2, the upper side of standard snap ring and its downside are provided with outward-dipping chamfering, opposing seal between the outer wall of bung 2 and standard measuring cup 1, the external diameter of standard measuring cup 1 equals the diameter of through hole, the internal diameter of standard snap ring equals the external diameter of standard measuring cup 1, LOAD CELLS 5 is all connected by screw with saucer 4 and back-up block 6.
The principle of work of rate of salt spray precipitation, online testing device of the present invention is as follows:
Proving installation 20 is placed in salt spray test chamber 10, salt fog settling amount collected by standard measuring cup 1, and LOAD CELLS 5 is passed to along saucer 4 under the effect of gravity sensing, LOAD CELLS 5 by the data collected by train of signal port transmission in host computer, thus host computer obtains the salt fog amount weight m in standard measuring cup 1, in salt-fog test process, temperature in salt spray test chamber 10 remains 35 DEG C by standard-required, now the density p of salt fog reagent approximates the density of water, if salt fog amount volume is V, settling time is t, and rate of salt spray precipitation, is G, then:
V＝m/ρ，G＝V/t＝m/ρt
Then on-line checkingi can be realized to rate of salt spray precipitation, by calculating.
The signal flow path switch of LOAD CELLS 5 as shown in Figure 2, the weight that standard measuring cup 1 produces makes LOAD CELLS 5 produce pressure distortion, the displacement that pressure distortion produces is electric signal in LOAD CELLS 5 internal conversion, i.e. analog quantity, after electric signal transmission to AD converter, be converted to digital quantity, finally turn 485 converters through TTL again and be connected with host computer, the salt fog settling data that LOAD CELLS 5 is detected by communicating circuit real-time Transmission to host computer.
Wherein heavy Fundamentals of Sensors are as shown in Figure 3, resistance R1=R2=R3=R4=R, and resistance R1 and R4 is for being subject to piezoresistance, R2 and R3 is by pull-up resistor, when the saucer 4 in Fig. 1 is under pressure, and voltage U=(△ R/R) E=KP.Wherein K is the conversion coefficient of pressure to voltage, and P is the pressure that LOAD CELLS 5 resistance is subject to, and U is the output voltage on LOAD CELLS 5 bridge road, and E is the supply voltage of LOAD CELLS 5).
Traditional measurement mode adopts the mode of off-line, artificial reading, and not only efficiency is low, and reading can be subject to the impact of human factor, and the saline solution part remained on graduated cylinder wall also cannot calculate.And the rate of salt spray precipitation, measuring method in the present invention, adopt online reading, not only facilitate, key eliminates in traditional measurement method the drawback that cannot detect the saline solution part remained on graduated cylinder wall, so measuring method is more accurately and reliably.
Salt mist environment has corrosivity to product facility, general proving installation 20 is placed in salt mist environment, salt fog cl ion can react with metal, solution also easily causes the faults such as system short-circuit, and the shell of this proving installation 20 adopts is the pmma material of resisting salt fog corrosion, core parts-the LOAD CELLS 5 of this proving installation 20 protects by design standards measuring cup 1, saucer 4, bung 2, bucket cup 3 etc. well, in order to prevent droplet deposition, above and below, standard measuring cup 1 edge all takes outward-dipping chamfer design; Inner in order to prevent salt fog from overflowing into proving installation 20, consider standard measuring cup 1 and bung 2 to be designed to opposing seal ground upside-down mounting fit form, dry utterly with assurance device inside.
In addition, with reference to the relevant regulations in GJB, the number of the proving installation 20 in the present invention requires to be no less than four, simultaneously because the address of signal serial ports is 0 ~ 255, therefore can connect 255 proving installations 20 to work simultaneously simultaneously, conveniently in large-scale salt fog chamber 10, use the present invention.
Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, the technology distortion that every technical scheme according to the present invention is made, and all falls within protection scope of the present invention.
Claims (5)
1. a rate of salt spray precipitation, online testing device, described proving installation is arranged in salt spray test chamber, it is characterized in that: comprise standard measuring cup, LOAD CELLS and mount pad, described standard measuring cup is arranged on described mount pad, described LOAD CELLS is arranged in described mount pad, the sidewall of described salt spray test chamber is provided with signal serial ports, the signal end of described LOAD CELLS is connected with the signal end of host computer by described signal serial ports.
2. rate of salt spray precipitation, online testing device according to claim 1, it is characterized in that: described mount pad comprises bucket cup, bung, saucer and back-up block, described back-up block is arranged in described bucket cup, described saucer is fixedly connected with described back-up block by described LOAD CELLS, described standard measuring cup is placed on described saucer, described bung is arranged on the opening part of described bucket cup, described bung is provided with through hole, and the opening of described standard measuring cup is arranged on outside described mount pad through described bung.
3. rate of salt spray precipitation, online testing device according to claim 2, it is characterized in that: the opening part of described standard measuring cup is provided with standard snap ring, the upper surface of described bung, the upper side of described standard snap ring and its downside are provided with outward-dipping chamfering, opposing seal between the outer wall of described bung and described standard measuring cup.
4. rate of salt spray precipitation, online testing device according to claim 3, is characterized in that: the external diameter of described standard measuring cup equals the diameter of described through hole, and the internal diameter of described standard snap ring equals the external diameter of described standard measuring cup.
5. rate of salt spray precipitation, online testing device according to claim 2, is characterized in that: described LOAD CELLS and described saucer and described back-up block are all connected by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153563.9A CN104713810A (en) | 2015-04-02 | 2015-04-02 | Online salt spray sedimentation rate testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153563.9A CN104713810A (en) | 2015-04-02 | 2015-04-02 | Online salt spray sedimentation rate testing device |
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| Publication Number | Publication Date |
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| CN104713810A true CN104713810A (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510153563.9A Pending CN104713810A (en) | 2015-04-02 | 2015-04-02 | Online salt spray sedimentation rate testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192658A (en) * | 2017-03-29 | 2017-09-22 | 中国航空无线电电子研究所 | Salt spray test chamber |
| CN111458284A (en) * | 2020-04-26 | 2020-07-28 | 安徽中腾汽车零部件有限公司 | Salt spray testing machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6336358B1 (en) * | 1999-05-19 | 2002-01-08 | Sefa Technology Inc. | Method and apparatus for measuring sedimentation rate of sediments in liquid sample |
| CN102954933A (en) * | 2012-11-14 | 2013-03-06 | 天津天维移动通讯终端检测有限公司 | Saline water spray box |
| CN202939118U (en) * | 2012-12-11 | 2013-05-15 | 广州供电局有限公司 | Salt-spray environment testing apparatus |
| CN203259442U (en) * | 2013-05-28 | 2013-10-30 | 中国人民解放军63853部队 | Salt spray precipitation rate multi-measure-point real-time automatic detection apparatus |
| CN203838033U (en) * | 2014-02-19 | 2014-09-17 | 江苏凯联达电子科技有限公司 | Salt spray corrosion testing box |
| CN203908920U (en) * | 2014-06-13 | 2014-10-29 | 上海思博特轴承技术研发有限公司 | Salt spray corrosion test chamber |
| CN204165882U (en) * | 2014-10-22 | 2015-02-18 | 张烨 | Salt spray tester |
| CN204461954U (en) * | 2015-04-02 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Rate of salt spray precipitation, online testing device |
-
2015
- 2015-04-02 CN CN201510153563.9A patent/CN104713810A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6336358B1 (en) * | 1999-05-19 | 2002-01-08 | Sefa Technology Inc. | Method and apparatus for measuring sedimentation rate of sediments in liquid sample |
| CN102954933A (en) * | 2012-11-14 | 2013-03-06 | 天津天维移动通讯终端检测有限公司 | Saline water spray box |
| CN202939118U (en) * | 2012-12-11 | 2013-05-15 | 广州供电局有限公司 | Salt-spray environment testing apparatus |
| CN203259442U (en) * | 2013-05-28 | 2013-10-30 | 中国人民解放军63853部队 | Salt spray precipitation rate multi-measure-point real-time automatic detection apparatus |
| CN203838033U (en) * | 2014-02-19 | 2014-09-17 | 江苏凯联达电子科技有限公司 | Salt spray corrosion testing box |
| CN203908920U (en) * | 2014-06-13 | 2014-10-29 | 上海思博特轴承技术研发有限公司 | Salt spray corrosion test chamber |
| CN204165882U (en) * | 2014-10-22 | 2015-02-18 | 张烨 | Salt spray tester |
| CN204461954U (en) * | 2015-04-02 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Rate of salt spray precipitation, online testing device |
Non-Patent Citations (1)
| Title |
|---|
| 林春江: "对盐雾试验箱盐雾沉降率校准方法的探讨", 《计量技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192658A (en) * | 2017-03-29 | 2017-09-22 | 中国航空无线电电子研究所 | Salt spray test chamber |
| CN111458284A (en) * | 2020-04-26 | 2020-07-28 | 安徽中腾汽车零部件有限公司 | Salt spray testing machine |
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Application publication date: 20150617 |
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