CN112304538A - Air tightness detection device and method - Google Patents
Air tightness detection device and method Download PDFInfo
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- CN112304538A CN112304538A CN201910680373.0A CN201910680373A CN112304538A CN 112304538 A CN112304538 A CN 112304538A CN 201910680373 A CN201910680373 A CN 201910680373A CN 112304538 A CN112304538 A CN 112304538A
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- sealing device
- air pressure
- air
- sealing
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3209—Details, e.g. container closure devices
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
- G01M3/329—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
Abstract
The application relates to an air tightness detection device and method. The device comprises: the air pressure monitoring device is connected with the sealing device and used for pressurizing or decompressing the sealing device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the sealing device and a measured object within a preset time; the sealing device is connected with the at least one fixing device and is used for covering the object to be measured and the sealant of the object to be measured; and the fixing device is used for fixing the periphery of the measured object, so that the measured object and the sealant of the measured object are covered by the sealing device. The air tightness can be independently verified aiming at the window with the replaced glass, the vehicle can be free from being compiled again, and a large amount of rework tests are avoided. Meanwhile, the device is simple in design structure, convenient to operate and good in sealing performance, and can well meet the air tightness detection requirement.
Description
Technical Field
The present application relates to the field of air tightness detection technologies, and in particular, to an air tightness detection method, an air tightness detection device, a computer device, and a storage medium.
Background
In the process of advanced maintenance of the motor train unit, the maintenance process is divided into an assembly stage, a single train debugging stage and a train debugging stage, the assembly and maintenance stage is used for carrying out state inspection on parts of the train, and the faults are timely processed or the parts are replaced after the faults are found, so that the replacement operation is more convenient in the stage; once the train finds the problem part after entering the train debugging stage, the train needs to be replaced, and the replacement process has great difficulty.
In the maintenance stage, a problem that the air tightness of the window glass cannot be well solved is always verified after the window glass is replaced so as to ensure the safety of the train in high-speed operation. After the train is marshalled, the possibility of verifying the air tightness of the whole train does not exist, only the compartment of the train can be disassembled, then windshields at two ends of the compartment are plugged by using air-tight equipment, the interior of the train body is respectively pressurized and decompressed to +/-4 KPa by using an air blower, and a pressure change value is detected in a 60s period, so that the air tightness of the compartment is judged.
The existing air tightness detection method can only be limited to the state of a single carriage, if window glass is replaced in a train debugging stage, a large amount of time and labor are consumed in the process of train decompiling and regrooving, a large amount of related tests are required to be made after the train is regrooved, unnecessary reworking is caused, and the overhaul period of the train is seriously influenced.
Disclosure of Invention
In view of the above, it is necessary to provide a method and an apparatus for detecting air tightness.
An air-tightness detection device, comprising:
the air pressure monitoring device is connected with the sealing device and used for pressurizing or decompressing the sealing device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the sealing device and a measured object within a preset time;
the sealing device is connected with the at least one fixing device and is used for covering the object to be measured and the sealant of the object to be measured;
and the fixing device is used for fixing the periphery of the measured object, so that the measured object and the sealant of the measured object are covered by the sealing device.
In one embodiment, the air pressure monitoring device comprises:
the air pipe connector is connected with the sealing device and used for transmitting the air pressure between the air pressure monitoring device and the sealing device;
the exhaust valve is arranged at the upper end of the air pipe connector and used for adjusting the air pressure in the sealing device;
the control handle is arranged on one side of the exhaust valve and used for controlling the air pressure monitoring device to pressurize or decompress the sealing device;
and the air pressure meter is arranged on the other side of the exhaust valve and used for monitoring the air pressure in the sealing device.
In one embodiment, the sealing device comprises:
the air faucet is connected with the air pipe connector and used for transmitting the air pressure between the air pressure monitoring device and the sealing device;
the shell is connected with the air tap and used for covering the object to be measured and the sealant of the object to be measured;
and the first sealing rubber ring is arranged at the lower part of the shell and used for sealing the shell and the measured object.
In one embodiment, the fixing device comprises:
the second sealing rubber ring is arranged around the measured object and used for fixing the sealing device on the surface of the measured object;
and the fixed handle is arranged on the upper part of the second sealing rubber ring and used for fixing the second sealing rubber ring around the measured object.
A method of hermetic seal detection, the method comprising:
fixing the air tightness detecting device around the object to be detected by at least one fixing device in the air tightness detecting device according to claim 1, and determining the sealing glue of the sealing device covering the object to be detected and the object to be detected;
the air pressure monitoring device pressurizes or depressurizes the sealing device and adjusts air pressure in the sealing device so as to obtain pressure change between the air pressure monitoring device and the sealing device within preset time.
In one embodiment, the step of pressurizing or depressurizing the sealing device by the air pressure monitoring device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the air pressure monitoring device and the sealing device within the preset time includes:
the air pressure monitoring device is used for inflating and pressurizing the sealing device, when the pressure displayed by the air pressure meter is greater than a first preset threshold value, the handle is released, the inflation is stopped, meanwhile, the air pressure is adjusted to the first preset threshold value by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time;
and the air pressure monitoring device performs air suction and pressure reduction on the sealing device, when the pressure displayed by the barometer is smaller than a second preset threshold, the handle is released, air suction is stopped, meanwhile, the air pressure is adjusted to the second preset threshold by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time.
The air tightness detection method and the air tightness detection device comprise an air pressure monitoring device which is connected with the sealing device and used for pressurizing or decompressing the sealing device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the sealing device and a measured object within a preset time; the sealing device is connected with the at least one fixing device and is used for covering the object to be measured and the sealant of the object to be measured; and the fixing device is used for fixing the periphery of the measured object, so that the measured object and the sealant of the measured object are covered by the sealing device. The air tightness can be independently verified aiming at the window with the replaced glass, the vehicle can be free from being compiled again, and a large amount of rework tests are avoided. Meanwhile, the device is simple in design structure, convenient to operate and good in sealing performance, and can well meet the air tightness detection requirement.
Drawings
FIG. 1 is a schematic view of an air-tightness detection device in one embodiment;
FIG. 2 is a schematic view of an exemplary pressure monitoring device;
FIG. 3 is a schematic view of a sealing device in one embodiment;
FIG. 4 is a schematic view of a fixture according to one embodiment;
FIG. 5 is a flow chart illustrating a method for detecting air-tightness according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, a gas tightness detecting device, the device comprising:
the air pressure monitoring device 100 is connected with the sealing device 200 and is used for pressurizing or depressurizing the sealing device 200 and adjusting the air pressure in the sealing device 200 so as to obtain the pressure change between the sealing device 200 and a measured object within a preset time;
the sealing device 200 is connected with the at least one fixing device 300 and is used for covering the object to be measured and the sealant of the object to be measured;
and the fixing device 300 is used for fixing the object to be measured around the object to be measured, so that the object to be measured and the sealant of the object to be measured are covered by the sealing device.
Referring to fig. 2, in one embodiment, the air pressure monitoring device 100 includes:
the air pipe connector 101 is connected with the sealing device 200 and used for transmitting air pressure between the air pressure monitoring device and the sealing device;
the exhaust valve 102 is arranged at the upper end of the air pipe connector 101 and used for adjusting the air pressure in the sealing device 200;
a control handle 103 disposed at one side of the exhaust valve 102 for controlling the air pressure monitoring device 100 to pressurize or depressurize the sealing device 200;
and the air pressure gauge 104 is arranged at the other side of the exhaust valve 102 and is used for monitoring the air pressure in the sealing device 200.
Referring to fig. 3, in one embodiment, the sealing device 200 includes:
the air faucet 201 is connected with the air pipe connector 101 and is used for transmitting air pressure between the air pressure monitoring device 100 and the sealing device 200;
the shell 202 is connected with the air tap 201 and used for covering a measured object and a sealant of the measured object;
and a first sealing rubber ring 203 arranged at the lower part of the housing 202 and used for sealing the housing 202 with the object to be measured.
If the object to be tested is a vehicle window, the first sealant ring 203 of the sealing device 200 needs to completely cover the vehicle window glass and the sealant of the glass during testing.
Referring to fig. 4, in one embodiment, the fixing device 300 includes:
the second sealing rubber ring 301 is arranged around the measured object and used for fixing the sealing device on the surface of the measured object;
and a fixing handle 302 arranged on the upper part of the second sealing rubber ring and used for fixing the second sealing rubber ring around the measured object.
Specifically, the number of the fixing devices may be four or six, etc., and the fixing devices may be arranged as needed. After the fixing device 300 is placed at a specified position, the fixing device 300 is pressed forcibly, and after the second sealing rubber ring 301 is pressed to the maximum deformation, the fixing handle 302 is closed in sequence, and the fixing device 300 is fixed in place.
Referring to fig. 5, a method of hermetic seal detection, the method comprising:
step S1: fixing the air tightness detecting device around the object to be detected by at least one fixing device in the air tightness detecting device according to claim 1, and determining the sealing glue of the sealing device covering the object to be detected and the object to be detected;
step S2: the air pressure monitoring device pressurizes or depressurizes the sealing device and adjusts air pressure in the sealing device so as to obtain pressure change between the air pressure monitoring device and the sealing device within preset time.
Specifically, the preset time refers to a period of time set in advance, and may be 30min or 1h, and the like, and is set according to specific needs. The train debugging stage discovery has the door window to break and change, beat and glue the sealed back, need verify this gas tightness of changing door window glass to the security and the travelling comfort that the passenger experienced when guaranteeing the train operation. Before verification, the sealing device of the device is firstly buckled on a vehicle window needing to detect the air tightness, and a first sealing rubber ring of the sealing device is required to completely cover the sealing glue of the glass. After the device is placed in place, the fixing devices are pressed downwards, the second sealing rubber ring of each fixing device is deformed, and when the deformation reaches the maximum value, the fixing handle of each fixing device is closed in sequence, so that the whole air tightness detection device is fastened in place.
In one embodiment, the step S2 includes:
step S21: the air pressure monitoring device is used for inflating and pressurizing the sealing device, when the pressure displayed by the air pressure meter is greater than a first preset threshold value, the handle is released, the inflation is stopped, meanwhile, the air pressure is adjusted to the first preset threshold value by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time;
step S22: and the air pressure monitoring device performs air suction and pressure reduction on the sealing device, when the pressure displayed by the barometer is smaller than a second preset threshold, the handle is released, air suction is stopped, meanwhile, the air pressure is adjusted to the second preset threshold by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time.
Specifically, the preset pressure refers to a set pressure intensity, which may be 4KPa or 10KPa, and is specifically set as needed. The first preset threshold refers to the set highest pressure intensity, and the second preset threshold refers to the set lowest pressure intensity.
The air-tightness detection method and the air-tightness detection device comprise an air pressure monitoring device which is connected with the sealing device and used for pressurizing or decompressing the sealing device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the air pressure monitoring device and the sealing device within a preset time; the sealing device is connected with the at least one fixing device and is used for covering the object to be measured and the sealant of the object to be measured; and the fixing device is used for fixing the periphery of the measured object, so that the measured object and the sealant of the measured object are covered by the sealing device. The air tightness can be independently verified aiming at the window with the replaced glass, the vehicle can be free from being compiled again, and a large amount of rework tests are avoided. Meanwhile, the device is simple in design structure, convenient to operate and good in sealing performance, and can well meet the air tightness detection requirement.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. An air-tightness detecting device, characterized in that it comprises:
the air pressure monitoring device is connected with the sealing device and used for pressurizing or decompressing the sealing device and adjusting the air pressure in the sealing device so as to obtain the pressure change between the sealing device and a measured object within a preset time;
the sealing device is connected with the at least one fixing device and is used for covering the object to be measured and the sealant of the object to be measured;
and the fixing device is used for fixing the periphery of the measured object, so that the measured object and the sealant of the measured object are covered by the sealing device.
2. The apparatus of claim 1, wherein the air pressure monitoring device comprises:
the air pipe connector is connected with the sealing device and used for transmitting the air pressure between the air pressure monitoring device and the sealing device;
the exhaust valve is arranged at the upper end of the air pipe connector and used for adjusting the air pressure in the sealing device;
the control handle is arranged on one side of the exhaust valve and used for controlling the air pressure monitoring device to pressurize or decompress the sealing device;
and the air pressure meter is arranged on the other side of the exhaust valve and used for monitoring the air pressure in the sealing device.
3. The apparatus of claim 2, wherein the sealing means comprises:
the air faucet is connected with the air pipe connector and used for transmitting the air pressure between the air pressure monitoring device and the sealing device;
the shell is connected with the air tap and used for covering the object to be measured and the sealant of the object to be measured;
and the first sealing rubber ring is arranged at the lower part of the shell and used for sealing the shell and the measured object.
4. The apparatus of claim 3, wherein the securing means comprises:
the second sealing rubber ring is arranged around the measured object and used for fixing the sealing device on the surface of the measured object;
and the fixed handle is arranged on the upper part of the second sealing rubber ring and used for fixing the second sealing rubber ring around the measured object.
5. A method of hermetic seal detection, the method comprising:
fixing the air tightness detecting device around the object to be detected by at least one fixing device in the air tightness detecting device according to claim 1, and determining the sealing glue of the sealing device covering the object to be detected and the object to be detected;
the air pressure monitoring device pressurizes or depressurizes the sealing device and adjusts air pressure in the sealing device so as to obtain pressure change between the air pressure monitoring device and the sealing device within preset time.
6. The method of claim 5, wherein the pressure monitoring device pressurizing or depressurizing the sealing device and adjusting the pressure within the sealing device such that the change in pressure between the pressure monitoring device and the sealing device is obtained within a predetermined time period comprises:
the air pressure monitoring device is used for inflating and pressurizing the sealing device, when the pressure displayed by the air pressure meter is greater than a first preset threshold value, the handle is released, the inflation is stopped, meanwhile, the air pressure is adjusted to the first preset threshold value by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time;
and the air pressure monitoring device performs air suction and pressure reduction on the sealing device, when the pressure displayed by the barometer is smaller than a second preset threshold, the handle is released, air suction is stopped, meanwhile, the air pressure is adjusted to the second preset threshold by pressing the exhaust valve, and the numerical value change of the air pressure display number in the preset time is observed in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680373.0A CN112304538A (en) | 2019-07-26 | 2019-07-26 | Air tightness detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680373.0A CN112304538A (en) | 2019-07-26 | 2019-07-26 | Air tightness detection device and method |
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| CN112304538A true CN112304538A (en) | 2021-02-02 |
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| CN201910680373.0A Pending CN112304538A (en) | 2019-07-26 | 2019-07-26 | Air tightness detection device and method |
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| JP2017121982A (en) * | 2016-01-06 | 2017-07-13 | 株式会社日立製作所 | Car door airtight device and elevator device |
| CN206384106U (en) * | 2017-01-17 | 2017-08-08 | 肥东凯利电子科技有限公司 | A kind of controller for electric vehicle with sealing propertytest function |
| CN207703416U (en) * | 2018-01-20 | 2018-08-07 | 广州市正高汽车设备有限公司 | Vehicle dormer window list product examine has |
| CN109596288A (en) * | 2019-02-15 | 2019-04-09 | 中车青岛四方机车车辆股份有限公司 | A kind of sealing property detection device and detection method |
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2019
- 2019-07-26 CN CN201910680373.0A patent/CN112304538A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006177810A (en) * | 2004-12-22 | 2006-07-06 | Nok Corp | Inspection device and inspection method |
| JP2009216434A (en) * | 2008-03-07 | 2009-09-24 | Itoki Corp | Method and apparatus for testing airtightness of airtight door |
| CN103162915A (en) * | 2013-03-23 | 2013-06-19 | 吉林大学 | High speed train window water tightness experimental test system |
| CN204323366U (en) * | 2014-12-26 | 2015-05-13 | 南京康尼电子科技有限公司 | A kind of track train car door air inflation sealing device |
| JP2017121982A (en) * | 2016-01-06 | 2017-07-13 | 株式会社日立製作所 | Car door airtight device and elevator device |
| CN206384106U (en) * | 2017-01-17 | 2017-08-08 | 肥东凯利电子科技有限公司 | A kind of controller for electric vehicle with sealing propertytest function |
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Application publication date: 20210202 |
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