CN117890030A - Waterproof performance detection device and detection method - Google Patents
Waterproof performance detection device and detection method Download PDFInfo
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- CN117890030A CN117890030A CN202410076037.6A CN202410076037A CN117890030A CN 117890030 A CN117890030 A CN 117890030A CN 202410076037 A CN202410076037 A CN 202410076037A CN 117890030 A CN117890030 A CN 117890030A
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Abstract
The application discloses a waterproof performance detection device and a waterproof performance detection method, and relates to the technical field of timing product detection. The waterproof performance detection device includes: a standard container having a first cavity, a test container having a second cavity, a first connection tube for connecting between the standard container and the fluid supply device, a second connection tube for connecting between the standard container and the test container, and a third connection tube for connecting between the test container and the evacuation device. The second connecting pipe is provided with a second valve, the second connecting pipe or the standard container is provided with a pressure sensor, the pressure sensor is used for acquiring the pressure of fluid in the waterproof performance detection device, the pressure sensor and the second valve are sequentially arranged along the flowing direction of the fluid, and the third connecting pipe is provided with a third valve. The waterproof performance detection device provided by the application can detect the waterproof performance of the timing product more accurately and reliably.
Description
Technical Field
The application relates to the technical field of timing product detection, in particular to a waterproof performance detection device and a detection method.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and is not to be taken as an admission or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.
In the related art, the water-proof performance of the watch is detected by adopting a water pressure test mode, the watch is placed in a test device, certain water pressure can be applied to the surface of the watch by the device, then corresponding water pressure is set according to the water-proof level of the watch, after the water pressure is set, the watch is observed to perform underwater, and if the watch does not enter water and normally operates, the watch can be judged to have good water-proof performance. However, in the above detection method, the waterproof performance of the wristwatch cannot be quantified by parameters, and meanwhile, certain errors exist in the processing and assembling processes of the parts of the wristwatch, and the situation that different watches in the same batch have different volumes may occur. Therefore, the leakage condition of the wristwatch cannot be detected well, resulting in lower detection accuracy of the waterproof performance of the wristwatch.
Disclosure of Invention
Accordingly, an object of the present application is to provide a waterproof performance detection device and a waterproof performance detection method, which aim to solve the technical problems that in the prior art, the leakage condition of a wristwatch cannot be well detected, and the detection accuracy is low.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows:
in a first aspect, embodiments of the present application provide a waterproof performance detection apparatus, including:
a standard container having a first cavity;
the testing container is provided with a second containing cavity, and the second containing cavity is used for containing a timing product to be detected;
a first connecting pipe for connecting between the standard container and the fluid supply device, the first connecting pipe being provided with a first valve;
the second connecting pipe is connected between the standard container and the test container, a second valve is arranged at the second connecting pipe, a pressure sensor is arranged at the second connecting pipe or the standard container and used for acquiring the pressure of fluid in the waterproof performance detection device, and the pressure sensor and the second valve are sequentially arranged along the flowing direction of the fluid;
and the third connecting pipe is used for being connected between the test container and the vacuumizing device, and a third valve is arranged at the third connecting pipe.
In one embodiment of the first aspect, the fluid supply device is a gas supply device, and the waterproof performance detecting device further includes a gas temperature sensor disposed at the standard container or the second connection tube or the test container.
In a second aspect, embodiments of the present application further provide a waterproof performance detection method, using the waterproof performance detection apparatus described in any one of the above embodiments, the waterproof performance detection method including:
opening the first valve to enable the fluid supply device to fill the fluid into the first containing cavity until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, and closing the first valve;
calculating the amount of a first substance of the fluid in the waterproof performance detection device based on the preset volume and the preset pressure;
placing the timing product to be detected in the second containing cavity, then opening the third valve until the vacuumizing device vacuumizes the second containing cavity, and closing the third valve;
opening the second valve until the fluid fills the second containing cavity, acquiring the first pressure of the fluid in the waterproof performance detection device through the pressure sensor, and then acquiring the second pressure of the fluid in the waterproof performance detection device after the preset time;
calculating the amount of a second substance of the fluid in the waterproof performance detection device based on the preset volume, the preset pressure, the first pressure and the second pressure;
calculating the amount of the substance leaked into the fluid inside the timing product to be detected based on the amount of the second substance;
calculating an average leakage rate based on the amount of the fluid substance leaked into the timing product to be detected;
judging whether the average leakage rate is larger than a preset leakage rate or not;
if yes, judging that the timing product to be detected leaks;
if not, judging that the timing product to be detected is not leaked.
In one embodiment of the second aspect, when the fluid supply device is a gas supply device, the amount of the first substance is calculated by the following relation:
wherein n is 1 P being the amount of the first substance 1 For the preset pressure, V 1 For the preset volume, R is the universal constant of the gas and T is the thermodynamic temperature of the gas.
In one embodiment of the second aspect, when the fluid supply device is a gas supply device, the amount of the second substance is calculated by the following relation:
wherein n is 2t In the amount of the second substance, P 1 For the preset pressure, V 1 For the preset volume, P 2t For the second pressure, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 20 Is the first pressure.
In one embodiment of the second aspect, when the fluid supply device is a gas supply device, the amount of the substance of the fluid leaking into the interior of the timing product to be detected is calculated by the following relation:
wherein n is Leakage valve N is the amount of the substance of the fluid leaking into the interior of the timing product to be detected 1 N being the amount of the first substance 2t P is the amount of the second substance 1 For the preset pressure, V 1 For the preset volume, V 1 For the preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 2t For the second pressure, P 20 Is the first pressure.
In one embodiment of the second aspect, when the fluid supply device is a gas supply device, the average leak rate is calculated by the following relation:
wherein D is M For the average leakage rate, n Leakage valve M is the molar mass of the substance of the fluid leaking into the interior of the timing product to be detected; t is the preset time; p (P) 1 For the preset pressure, V 1 For the preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 2t For the second pressure, P 20 Is the first pressure.
In one embodiment of the second aspect, when the fluid supply device is a gas supply device, the preset volume is calculated by the following relation:
wherein V is 1 For the preset volume, P P A fluid pressure for the fluid supply device; v (V) V For the fluid volume, P, of the fluid supply device 1 And the preset pressure is set.
In one embodiment of the second aspect, after the first valve is opened to enable the fluid supply device to fill the first cavity with the fluid until the volume of the fluid in the waterproof performance detecting device is a preset volume and the pressure is a preset pressure, before the first valve is closed, the waterproof performance detecting method further includes:
after the timing product which is not leaked is placed in the second containing cavity, the reference pressure of the fluid in the waterproof performance detection device is obtained;
before the determining whether the average leakage rate is greater than a preset leakage rate, the waterproof performance detection method further includes:
judging whether the difference value between the reference pressure and the first pressure is smaller than or equal to a first preset value, and the difference value between the reference pressure and the second pressure is smaller than or equal to a second preset value;
if yes, executing the judgment whether the average leakage rate is larger than a preset leakage rate;
if not, judging that the timing product to be detected leaks.
In one embodiment of the second aspect, the acquiring the reference pressure of the fluid in the waterproof performance detecting apparatus includes:
opening the first valve to enable the fluid supply device to fill the fluid into the first containing cavity until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, and closing the first valve;
opening the third valve until the vacuumizing device vacuumizes the second containing cavity, and closing the third valve;
and opening the second valve until the fluid fills the second containing cavity, and acquiring the reference pressure through the pressure sensor.
The beneficial effects of this application are:
when the waterproof performance detection device provided by the embodiment is used, firstly, the first valve is opened, so that the fluid supply device fills fluid into the first containing cavity of the standard container until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, and then the first valve is closed. Then, based on the preset volume and the preset pressure, the amount of the first substance of the fluid in the waterproof performance detecting apparatus is calculated. And then placing the timing product to be detected in the second containing cavity, opening the third valve until the vacuumizing device vacuumizes the second containing cavity, and closing the third valve. Then, the second valve is opened until the fluid fills the second cavity, the first pressure of the fluid in the waterproof performance detection device is obtained through the pressure sensor, and then the second pressure of the fluid in the waterproof performance detection device is obtained after the preset time. Then, based on the preset volume, the preset pressure, the first pressure and the second pressure, the amount of the second substance of the fluid in the waterproof performance detection device is calculated, the amount of the substance of the fluid leaked into the timing product to be detected is calculated based on the amount of the second substance, and then the average leakage rate is calculated based on the amount of the substance of the fluid leaked into the timing product to be detected. And finally, judging whether the average leakage rate is larger than the preset leakage rate, if so, judging that the timing product to be detected leaks, and if not, judging that the timing product to be detected does not leak. Therefore, the leakage rate of the fluid is adopted to judge whether the timing product leaks or not, so that the waterproof performance of the timing product is reflected, and the accuracy of the waterproof performance detection of the timing product is improved.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing the assembly structure of a waterproof performance detecting device, a fluid supplying device and a vacuumizing device according to some embodiments of the present application;
FIG. 2 is a schematic diagram of a first flow chart of a waterproof performance detection method according to some embodiments of the present application;
FIG. 3 is a schematic diagram showing a second flow of the waterproof performance detection method according to some embodiments of the present application;
fig. 4 is a schematic view of a third flow chart of a waterproof performance detection method according to some embodiments of the present application.
Description of main reference numerals:
100-detecting means; 110-standard container; 111-a first cavity; 120-testing the container; 121-a second cavity; 130-a first connection tube; 140-a first valve; 150-a second connection tube; 160-a pressure sensor; 170-a second valve; 180-a third connecting tube; 190-a third valve; 200-timing product to be detected; 300-fluid supply means; 400-vacuumizing device; x-direction of flow of fluid.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1, in a first aspect, an embodiment of the present application provides a waterproof performance detection device 100, which relates to the technical field of timing product detection, and is mainly used for detecting waterproof performance of timing products such as a mechanical watch, an electronic watch, a timer and the like.
With continued reference to fig. 1, the waterproof performance detecting apparatus 100 provided in this embodiment includes: standard container 110, test container 120, first connection tube 130, second connection tube 150, and third connection tube 180.
The standard container 110 has a first cavity 111, the test container 120 has a second cavity 121, and the second cavity 121 is used for placing the timing product 200 to be tested. The first connection pipe 130 is used to be connected between the standard container 110 and the fluid supply device 300, the first valve 140 is provided at the first connection pipe 130, the second connection pipe 150 is connected between the standard container 110 and the test container 120, and the second valve 170 is provided at the second connection pipe 150, the pressure sensor 160 is provided at the second connection pipe 150 or the standard container 110, and the pressure sensor 160 is used to obtain the pressure of the fluid in the waterproof performance detecting device 100. The pressure sensor 160 and the second valve 170 are disposed in sequence along the flow direction x of the fluid. The third connection pipe 180 is for connection between the test container 120 and the vacuum pumping device 400, and a third valve 190 is provided at the third connection pipe 180.
It should be noted that "the pressure sensor 160 and the second valve 170 are disposed in sequence along the flow direction x of the fluid" means that the pressure sensor 160 is located on the side of the second valve 170 away from the test container 120. The first valve 140 is used for controlling the on-off of the first connection pipe 130, the second valve 170 is used for controlling the on-off of the second connection pipe 150, and the third valve 190 is used for controlling the on-off of the third connection pipe 180. In addition, the valve element can adopt a solenoid valve or a manual valve, and can be specifically arranged according to design requirements.
The "fluid in the waterproof performance test device 100" refers to the sum of the fluid in the first connection pipe 130, the standard container 110, the second connection pipe 150, the test container 120, the third connection pipe 180, and other elements and pipes.
In the related art, the water-proof performance of the watch is detected by adopting a water pressure test mode, the watch is placed in a test device, certain water pressure can be applied to the surface of the watch by the device, then corresponding water pressure is set according to the water-proof level of the watch, after the water pressure is set, the watch is observed to perform underwater, and if the watch does not enter water and normally operates, the watch can be judged to have good water-proof performance. However, in the above detection method, the waterproof performance of the wristwatch cannot be quantified by parameters, and meanwhile, certain errors exist in the processing and assembling processes of the parts of the wristwatch, and the situation that different watches in the same batch have different volumes may occur. Therefore, the leakage condition of the wristwatch cannot be detected well, resulting in lower detection accuracy of the waterproof performance of the wristwatch.
It can be understood that when the waterproof performance detecting device 100 provided in this embodiment is used, first, the first valve 140 is opened, so that the fluid supply device 300 fills the first cavity 111 of the standard container 110 with fluid until the volume of the fluid in the waterproof performance detecting device 100 is a preset volume and the pressure is a preset pressure, and then the first valve 140 is closed. Then, based on the preset volume and the preset pressure, the amount of the first substance of the fluid in the waterproof performance detecting apparatus 100 is calculated. Then, the timing product 200 to be detected is placed in the second cavity 121, and then the third valve 190 is opened until the evacuating device 400 evacuates the second cavity 121, and then the third valve 190 is closed. Next, the second valve 170 is opened until the first pressure of the fluid in the waterproof performance detecting apparatus 100 is obtained by the pressure sensor 160 after the fluid fills the second chamber 121, and then the second pressure of the fluid in the waterproof performance detecting apparatus 100 is obtained after a preset time elapses. Then, the amount of the second substance of the fluid in the waterproof performance detecting apparatus 100 is calculated based on the preset volume, the preset pressure, the first pressure, and the second pressure, the amount of the substance of the fluid leaked into the timing product 200 to be detected is calculated based on the amount of the second substance, and the average leakage rate is calculated based on the amount of the substance of the fluid leaked into the timing product 200 to be detected. Finally, judging whether the average leakage rate is larger than the preset leakage rate, if so, judging that the timing product 200 to be detected leaks, and if not, judging that the timing product 200 to be detected does not leak. Therefore, the leakage rate of the fluid is adopted to judge whether the timing product leaks or not, so that the waterproof performance of the timing product is reflected, and the accuracy of the waterproof performance detection of the timing product is improved.
It should be noted that the preset pressure is obtained by the pressure sensor 160. The calculation process of each of the above-described parameters may be performed manually, or may be performed by adding a calculation unit to the waterproof performance detection apparatus 100, and the calculation method of the above-described parameters is not particularly limited.
In one embodiment, the fluid supply device 300 is a gas supply device, and the waterproof performance detection device 100 further includes a gas temperature sensor disposed at the standard container 110 or the second connection pipe 150 or the test container 120.
In this embodiment, the fluid supply device 300 is selected as a gas supply device to realize that the fluid filled into the first and second cavities 111 and 121 is gas, and meanwhile, a gas temperature sensor is disposed at one of the standard container 110, the second connecting pipe 150 and the test container 120, and the gas temperature sensor is used to obtain the temperature of the gas in the waterproof performance detecting device 100 due to the good compressibility of the gas, so that the calculation of the average leak rate is facilitated, and the waterproof performance of the timing product 200 to be detected is determined by the leak rate.
Of course, for the above embodiment, besides the fluid, a liquid may be selected, that is, the fluid supply device 300 is selected as the liquid supply device, the waterproof performance detecting device 100 further includes a liquid temperature sensor, the liquid temperature sensor is disposed at the standard container 110 or the second connecting pipe 150 or the test container 120, and the liquid is adopted to calculate the leak rate of the timing product through the parameter, so as to reflect the waterproof performance of the timing product, which will not be described herein.
As shown in fig. 2, in a second aspect, an embodiment of the present application provides a waterproof performance detection method, using the waterproof performance detection apparatus 100 in any of the above embodiments, the waterproof performance detection method including steps S510 to S592:
s510, the first valve 140 is opened, so that the fluid supply device 300 fills the first cavity 111 with fluid, until the volume of the fluid in the waterproof performance detecting device 100 is a preset volume and the pressure is a preset pressure, and then the first valve 140 is closed.
It should be noted that the preset volume and the preset pressure may be obtained by the pressure sensor 160. The opening and closing of the first and second valves 140 and 170 may be accomplished by a manual operation or may be automatically controlled by a control unit.
S520, based on the preset volume and the preset pressure, the amount of the first substance of the fluid in the waterproof performance detecting apparatus 100 is calculated.
It should be noted that, when the fluid supply apparatus 300 is a gas supply apparatus, the amount of the first substance is calculated by the following relation:
wherein n is 1 In the amount of the first substance, P 1 To preset pressure, V 1 For a predetermined volume, R is the general constant of the gas and T is the thermodynamic temperature of the gas.
The thermodynamic temperature of the gas can be obtained by using a gas temperature sensor. In addition, for the amount n of the first substance 1 The calculation of (2) may be performed by a calculation unit or may be performed manually.
And S530, placing the timing product 200 to be detected in the second containing cavity 121, and then opening the third valve 190 until the vacuumizing device 400 vacuumizes the second containing cavity 121, and closing the third valve 190.
Similarly, the opening and closing of the third valve 190 may be performed by manual operation or may be automatically controlled by the control unit.
S540, the second valve 170 is opened until the fluid fills the second chamber 121, the first pressure of the fluid in the waterproof performance detecting apparatus 100 is obtained by the pressure sensor 160, and then the second pressure of the fluid in the waterproof performance detecting apparatus 100 is obtained after a preset time has elapsed.
The first pressure is at the initial time t 0 Obtained from the initial time t 0 And after the preset time t, obtaining the second pressure.
S550, calculating the amount of the second substance of the fluid in the waterproof performance detecting apparatus 100 based on the preset volume, the preset pressure, the first pressure, and the second pressure.
It should be noted that, when the fluid supply apparatus 300 is a gas supply apparatus, the amount of the second substance is calculated by the following relation:
wherein n is 2t In the amount of the second substance, P 1 To preset pressure, V 1 To a preset volume, P 2t At a second pressure, R is the general constant of the gas, T is the thermodynamic temperature of the gas, P 20 Is the first pressure. For an amount n of the second substance 2t The calculation of (2) may be performed by a calculation unit or may be performed manually.
S560, based on the amount of the second substance, the amount of the substance leaking into the fluid inside the timing product 200 to be detected is calculated.
It should be noted that, when the fluid supply device 300 is a gas supply device, the amount of the fluid leaked into the interior of the timing product 200 to be detected is calculated by the following relationship:
wherein n is Leakage valve N, the amount of substance of the fluid leaking into the interior of the timing product 200 to be detected 1 N is the amount of the first substance 2t In the amount of the second substance, P 1 To preset pressure, V 1 For a preset volume, V 1 Is of preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, P 2t At a second pressure, P 20 Is the first pressure.
S570, calculating an average leakage rate based on the amount of the substance of the fluid leaked into the interior of the timing product 200 to be detected.
When the fluid supply device 300 is a gas supply device, the average leakage rate is calculated by the following relation:
wherein D is M To average leakage rate, n Leakage valve For the amount of material of the fluid leaking into the interior of the timing product 200 to be detected, M is the molar mass; t is a preset time; p (P) 1 To preset pressure, V 1 Is of preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, P 2t At a second pressure, P 20 Is the first pressure.
S580, judging whether the average leakage rate is larger than the preset leakage rate.
It should be noted that the preset leak rate may be set to 50. Mu.g/min according to the clauses in GB/T30106-2013. Of course, the preset leakage rate can also be set to other values, and can be specifically set according to the product quality requirement.
And S591, if so, judging that the timing product 200 to be detected leaks, namely, the detection result is that the waterproof performance of the timing product is unqualified.
S592, if not, judging that the timing product 200 to be detected is not leaked, namely, the detection result is that the waterproof performance of the timing product is qualified.
In this embodiment, by executing the steps S510 to S592, it is realized that the leak rate of the fluid is adopted to determine whether the timing product leaks, so as to reflect the waterproof performance of the timing product, and improve the accuracy of detecting the waterproof performance of the timing product.
In one embodiment, when the fluid supply device 300 is a gas supply device, the preset volume is calculated by the following relationship:
wherein V is 1 To a preset volume, P P A fluid pressure for the fluid supply 300; v (V) V Is the fluid volume, P, of the fluid supply 300 1 Is a preset pressure.
In the present embodiment, the fluid pressure of the fluid supply device 300 and the fluid volume of the fluid supply device 300 are known, presetThe pressure may be obtained by pressure sensor 160. So that the preset volume V can be indirectly obtained through formula calculation 1 。
In another embodiment, the estimation is used to obtain the predetermined volume V 1 Specifically, the sum of the fluid volumes inside the standard container 110, the first connection pipe 130, the second connection pipe 150, the pressure sensor 160, and other components is calculated. In yet another embodiment, the standard container 110 and the first connection tube 130 and the second connection tube 150 are filled with a fluid of which the volume, volume and the like are known externally, and the sum of the volumes of the standard container 110 and the pipeline thereof is determined from the volume of the external fluid, so that the preset volume V can be indirectly obtained 1 。
As shown in fig. 3, in one embodiment, the waterproof performance detecting method further includes step S610 before S510, and the waterproof performance detecting method further includes step S620 before S580:
and S610, after the timing product which is not leaked is placed in the second containing cavity 121, the reference pressure of the fluid in the waterproof performance detection device 100 is obtained.
S620, judging whether the difference value between the reference pressure and the first pressure is smaller than or equal to a first preset value, and the difference value between the reference pressure and the second pressure is smaller than or equal to a second preset value.
S580, if yes, executing the judgment whether the average leakage rate is larger than the preset leakage rate.
S630, if not, judging that the timing product 200 to be detected leaks.
In this embodiment, for convenience of description, the reference pressure is defined as P 4 If P 4 -P 20 A first preset value or less and P 4 -P 2t And (6) if the second preset value is less than or equal to the second preset value, executing S580. If the above relation is not satisfied, it is determined that the timing product 200 to be detected is leaked, that is, the detection result is that the timing product is not qualified.
It will be appreciated that if the leak condition of the timing product 200 to be detected is severe, in step S530, the initial time t of the fluid introduction from the test container 120 0 Initially, in a very short time, the pressure P of the fluid 2 Variation ofQuickly, the pressure sensor 160 may fail to recognize or falsely recognize the second preset pressure P in time or in time 20 For example, the fluid instantaneously enters the interior of the timing product, the second preset pressure P 20 Instantaneous decrease (possibly minimized, pressure can be identified in rapid decrease, second preset pressure P at this time) 20 Initial time t, which has not been defined previously 0 Fluid pressure at the time of the time), misjudgment is made to the judgment of S580, and therefore, by P 4 -P 20 Judging the first preset value is less than or equal to the second preset pressure P 20 And the detection accuracy of the waterproof performance of the timing product is improved by eliminating the waterproof performance.
In addition, the above relation can judge whether the leakage of the timing product is serious or not, because of P 2t From the initial time t 0 The stable value after pressure maintaining is carried out for a preset time t, the data reliability is high, if P 4 -P 2t And less than or equal to the second preset value, wherein the timing product 200 to be detected does not have serious leakage, and if the relation is not satisfied, the timing product 200 to be detected has serious leakage. Thus, the reliability of the waterproof performance detection result is improved.
As shown in fig. 4, further, step S610 includes sub-steps S611 to S613:
s611, the first valve 140 is opened, so that the fluid supply device 300 fills the first cavity 111 with fluid, until the volume of the fluid in the waterproof performance detecting device 100 is a preset volume and the pressure is a preset pressure, and then the first valve 140 is closed.
S612, the third valve 190 is opened until the evacuating device 400 evacuates the second chamber 121, and then the third valve 190 is closed.
S613, the second valve 170 is opened until the fluid fills the second chamber 121, and the reference pressure is obtained by the pressure sensor 160.
In the present embodiment, the reference pressure P can be obtained by performing the above steps S611 to S613 4 Thereby facilitating the error second preset pressure P 20 And the detection accuracy of the waterproof performance of the timing product is improved by eliminating the waterproof performance. Simultaneously, can promote and preventReliability of the water property detection result.
It should be noted that, the waterproof performance detecting device 100 described above can be used to detect the volume of a qualified timing product, that is, the volume of a timing product in which no leakage occurs, in addition to the waterproof performance of the timing product 200 to be detected, and specifically: first, the first valve 140 is opened to fill the fluid supply device 300 into the first chamber 111 until the volume of the fluid in the waterproof performance detecting device 100 is a preset volume V 1 And the pressure is a preset pressure P 1 Thereafter, the first valve 140 is closed. Then, the third valve 190 is opened until the evacuating device 400 evacuates the second chamber 121, and then the third valve 190 is closed. Then, the second valve 170 is opened until the fluid fills the second chamber 121, and the third pressure P of the fluid in the waterproof performance detecting apparatus 100 is obtained by the pressure sensor 160 3 . Next, the second valve 170 is closed, and the third valve 190 is opened until the evacuating device 400 evacuates the second chamber 121, and then the third valve 190 is closed. Then, the qualified timing product is placed in the second cavity 121. After that, the first valve 140 is opened to fill the fluid supply device 300 into the first chamber 111 until the volume of the fluid in the waterproof performance detecting device 100 is a preset volume V 1 And the pressure is a preset pressure P 1 Thereafter, the first valve 140 is closed. Then, the third valve 190 is opened until the evacuating device 400 evacuates the second chamber 121, and then the third valve 190 is closed. Then, the second valve 170 is opened until the fluid fills the second chamber 121, and the fourth pressure P of the fluid in the waterproof performance detecting apparatus 100 is obtained by the pressure sensor 160 4 . Finally, the volume V of the qualified timing product is calculated by the following relation:
in the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A waterproof performance detecting device, characterized by comprising:
a standard container having a first cavity;
the testing container is provided with a second containing cavity, and the second containing cavity is used for containing a timing product to be detected;
a first connecting pipe for connecting between the standard container and the fluid supply device, the first connecting pipe being provided with a first valve;
the second connecting pipe is connected between the standard container and the test container, a second valve is arranged at the second connecting pipe, a pressure sensor is arranged at the second connecting pipe or the standard container and used for acquiring the pressure of fluid in the waterproof performance detection device, and the pressure sensor and the second valve are sequentially arranged along the flowing direction of the fluid;
and the third connecting pipe is used for being connected between the test container and the vacuumizing device, and a third valve is arranged at the third connecting pipe.
2. The waterproof performance detecting apparatus according to claim 1, wherein the fluid supply apparatus is a gas supply apparatus, the waterproof performance detecting apparatus further comprising a gas temperature sensor provided at the standard container or the second connection pipe or the test container.
3. A waterproof performance detection method, characterized by using the waterproof performance detection apparatus according to claim 1 or 2, comprising:
opening the first valve to enable the fluid supply device to fill the fluid into the first containing cavity until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, and closing the first valve;
calculating the amount of a first substance of the fluid in the waterproof performance detection device based on the preset volume and the preset pressure;
placing the timing product to be detected in the second containing cavity, then opening the third valve until the vacuumizing device vacuumizes the second containing cavity, and closing the third valve;
opening the second valve until the fluid fills the second containing cavity, acquiring the first pressure of the fluid in the waterproof performance detection device through the pressure sensor, and then acquiring the second pressure of the fluid in the waterproof performance detection device after the preset time;
calculating the amount of a second substance of the fluid in the waterproof performance detection device based on the preset volume, the preset pressure, the first pressure and the second pressure;
calculating the amount of the substance leaked into the fluid inside the timing product to be detected based on the amount of the second substance;
calculating an average leakage rate based on the amount of the fluid substance leaked into the timing product to be detected;
judging whether the average leakage rate is larger than a preset leakage rate or not;
if yes, judging that the timing product to be detected leaks;
if not, judging that the timing product to be detected is not leaked.
4. The waterproof performance detection method according to claim 3, wherein when the fluid supply device is a gas supply device, the amount of the first substance is calculated by the following relation:
wherein n is 1 P being the amount of the first substance 1 For the preset pressure, V 1 For the preset volume, R is the universal constant of the gas and T is the thermodynamic temperature of the gas.
5. The waterproof performance detection method according to claim 3, wherein when the fluid supply device is a gas supply device, the amount of the second substance is calculated by the following relation:
wherein n is 2t In the amount of the second substance, P 1 For the preset pressure, V 1 For the preset volume, P 2t For the second pressure, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 20 Is the first pressure.
6. The waterproof performance detection method according to claim 3, wherein when the fluid supply device is a gas supply device, the amount of the substance of the fluid leaked into the inside of the time-counting product to be detected is calculated by the following relation:
wherein n is Leakage valve N is the amount of the substance of the fluid leaking into the interior of the timing product to be detected 1 N being the amount of the first substance 2t P is the amount of the second substance 1 For the preset pressure, V 1 For the preset volume, V 1 For the preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 2t For the second pressure, P 20 Is the first pressure.
7. The waterproof performance detection method according to claim 3, wherein when the fluid supply device is a gas supply device, the average leak rate is calculated by the following relation:
wherein D is M For the average leakage rate, n Leakage valve M is the molar mass of the substance of the fluid leaking into the interior of the timing product to be detected; t is the preset time; p (P) 1 For the preset pressure, V 1 For the preset volume, R is the general constant of the gas, T is the thermodynamic temperature of the gas, and P 2t For the second pressure, P 20 Is the first pressure.
8. The waterproof performance detection method according to claim 3, wherein when the fluid supply device is a gas supply device, the preset volume is calculated by the following relation:
wherein V is 1 For the preset volume, P P A fluid pressure for the fluid supply device; v (V) V For the fluid volume, P, of the fluid supply device 1 And the preset pressure is set.
9. The waterproof performance detection method according to any one of claims 3 to 8, wherein after the first valve is opened to fill the fluid supply device with the fluid into the first chamber until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, the waterproof performance detection method further comprises, before closing the first valve:
after the timing product which is not leaked is placed in the second containing cavity, the reference pressure of the fluid in the waterproof performance detection device is obtained;
before the determining whether the average leakage rate is greater than a preset leakage rate, the waterproof performance detection method further includes:
judging whether the difference value between the reference pressure and the first pressure is smaller than or equal to a first preset value, and the difference value between the reference pressure and the second pressure is smaller than or equal to a second preset value;
if yes, executing the judgment whether the average leakage rate is larger than a preset leakage rate;
if not, judging that the timing product to be detected leaks.
10. The waterproof performance detection method according to claim 9, wherein the obtaining the reference pressure of the fluid in the waterproof performance detection apparatus includes:
opening the first valve to enable the fluid supply device to fill the fluid into the first containing cavity until the volume of the fluid in the waterproof performance detection device is a preset volume and the pressure is a preset pressure, and closing the first valve;
opening the third valve until the vacuumizing device vacuumizes the second containing cavity, and closing the third valve;
and opening the second valve until the fluid fills the second containing cavity, and acquiring the reference pressure through the pressure sensor.
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| CN202410076037.6A CN117890030A (en) | 2024-01-18 | 2024-01-18 | Waterproof performance detection device and detection method |
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| CN202410076037.6A CN117890030A (en) | 2024-01-18 | 2024-01-18 | Waterproof performance detection device and detection method |
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