CN104848999A - Air tightness detection device - Google Patents

Air tightness detection device Download PDF

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Publication number
CN104848999A
CN104848999A CN 201510211205 CN201510211205A CN104848999A CN 104848999 A CN104848999 A CN 104848999A CN 201510211205 CN201510211205 CN 201510211205 CN 201510211205 A CN201510211205 A CN 201510211205A CN 104848999 A CN104848999 A CN 104848999A
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detection
cylinder
provided
assembly
box
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CN 201510211205
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Chinese (zh)
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王明克
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凯迈(洛阳)气源有限公司
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Abstract

The invention relates to an air tightness detection device. The device comprises a portable detection box which is internally equipped with an air cylinder and a detection assembly. The detection assembly includes an air inlet end communicated with the air cylinder and an air outlet end communicated with a detected piece. The detection assembly further includes a valve and a pressure gauge which are arranged in sequence from the air inlet end to the air outlet end. The technical problem that an air tightness detection device is not easy to carry in the prior art is solved.

Description

一种气密性检测装置 One kind of leak detection device

技术领域 FIELD

[0001] 本发明涉及一种气密性检测装置,尤其是一种便携式的气密性检测装置。 [0001] The present invention relates to a leak detection means, in particular a portable leak detection means.

背景技术 Background technique

[0002] 现有技术中的气密性检测装置主要包括气源和气管,气管具有进气口和出气口,进气口和出气口之间设有阀门和压力表,阀门靠近进气口,压力表靠近出气口,气管的进气口与气源连接,出气口与被测件连接,出气口与被测件连接口,打开阀门,气密性检测装置对被测件充气,被测件内的压力稳定后,关闭阀门进行保压,通过对比保压前后的压差来判断装置气密性是否合格。 [0002] The prior art leak detection means includes a gas source and trachea, having a gas inlet and a gas outlet provided with a valve and pressure gauge between the air inlet and outlet, and close the air intake valve, gauge near the outlet, the air inlet pipe connected to a gas source, and the DUT outlet connection, the DUT is connected to the outlet port, the valve is opened, to leak detection means inflatable DUT, the DUT after the pressure in the stable holding pressure for closing the valve, by the pressure difference before and after the comparison means to determine the pressure holding airtightness eligibility.

[0003] 例如公告号为CN 203893985 U的中国实用新型专利就公开了一种气密性检测设备,该设备包括支撑架、气瓶和箱体结构,气瓶和箱体结构均安装在支撑架上,支撑架上安装有支撑脚和滚轮,支撑架端部还设有拉杆,箱体结构上具有进气口和出气口,进气口和出气口通过管路连通,管路上设有阀门和压力表,箱体结构内还设有两根软管,其中一根软管用于连接气瓶和进气口,另一根用于连接供出气口和被测件,出气口与被测件连接后,打开阀门向被测件充气,进行气密性检测。 [0003] as, for example, Publication No. CN 203893985 U on the Chinese utility model patent discloses a leak detection apparatus that includes a support frame, box structure and cylinders, and the cylinders are mounted on the support frame box structure , the support frame and support legs are mounted rollers, the support bracket further has a rod end portion, having an air inlet and outlet to the housing structure, the air inlet and the air outlet communicates through the line, and a pipeline provided with a valve pressure gauge, also has a box structure within two hoses, wherein a hose for connecting the cylinder and the intake port, the other for connecting the supply air outlet and the DUT, the DUT is connected to the outlet after opening the valve member to the pneumatic test carried out leak detection. 但是该检测设备的气瓶设置在箱体结构的外部,还设置支撑架结构来固定气瓶和箱体结构,增加了设备整体的体积,同时在支撑架的上端设置拉杆,支撑架的下端安装支撑脚和滚轮,而该设备设置支撑架,并且在支撑架上设置滚轮是为了使该设备能够一体移动,并不是为了便于随身携带,因此,该检测装置并没有实现便携的目的。 However, the cylinder detection apparatus provided outside of the box structure, provided the support frame is fixed to the structure of the cylinder and the housing structure, adds to the overall volume of the device, while the support frame is provided at the upper end of the rod, the lower end of the mounting bracket support legs and rollers, and the apparatus is arranged support frame, the support frame and arranged rollers are provided so that the apparatus can be moved integrally, in order not easy to carry, and therefore, the detecting device does not achieve the purpose of portability.

发明内容 SUMMARY

[0004] 本发明的目的是提供一种便携式的气密性检测装置。 [0004] The object of the present invention is to provide a portable leak detection means.

[0005] 为实现上述目的,本发明采用如下技术方案: [0005] To achieve the above object, the present invention adopts the following technical solution:

气密性检测装置,包括便携式的检测箱,检测箱内设有储气瓶和检测组件,所述检测组件包括用于与储气瓶连通的进气端和用于与被测件连通的出气端,检测组件还包括由进气端朝出气端方向依次设置的阀门和压力表。 Leak detection means comprises a portable test box, the box with the detection and detecting cylinder assembly, said detection assembly includes an intake port for communicating with a gas tank and an outlet communicating with the device under test end, the detection assembly further includes a valve and a pressure gauge by the inlet end toward the outlet end direction are sequentially disposed.

[0006] 检测箱内设有至少两组所述检测组件,各组检测组件均具有用于与储气瓶连通的进气端。 [0006] Detection of the tank is provided with at least two detection assembly components are detected in each group having a inlet end for communicating with the cylinder.

[0007] 所述检测箱包括箱体和箱盖,所述储气瓶位于箱体内,所述检测组件位于箱盖内。 [0007] The test box comprises a box body and a cover, located on the cylinder housing, said detector assembly positioned within lid.

[0008] 所述箱体内设有控制面板,控制面板上设有用于控制储气瓶的气路开关。 [0008] The box body is provided with a control panel, the control panel is provided for controlling the cylinder air passage switching.

[0009] 所述箱盖和箱体分体设置,所述检测箱内设有与储气瓶连接的、远离储气瓶的一端用于与检测组件连接的供气管。 [0009] The lid and the box is provided separately, the detection box is provided for connecting the cylinder tube end remote from the cylinder for connection to the detection assembly.

[0010] 所述供气管与任一组检测组件可拆连接,所述供气管用于与检测组件连接的一端设有快速接头,各组检测组件的进气端均设有用于与快速接头配合的接口。 [0010] The air supply pipe and a set of detectors according to any releasable connection assembly, for the air supply pipe having one end connected to the detection assembly is provided with a quick connector, the inlet end of each group are provided with detection means for mating with the quick connector Interface.

[0011] 所述检测箱内设有与储气瓶连接的、用于为储气瓶充气的充气管。 [0011] The tank is provided with a detector connected to the cylinder, the cylinder is a pneumatic inflatable tube.

[0012] 所述检测箱内设有用于检测储气瓶内压力的校准组件,校准组件包括压力表。 [0012] The tank is provided for detecting calibration components, the calibration gas cylinder pressure detection assembly comprises a pressure gauge.

[0013] 所述检测箱上设有可供人手持的提手。 [0013] The tank is provided for detecting the person holding the handle.

[0014] 本发明的有益效果为:本发明采用便携式的检测箱,在检测箱内设置储气瓶和检测组件,气瓶和检测组件均设置在检测箱内,方便一起随身携带,检测组件包括进气端和出气端,由进气端朝出气端方向依次设置有阀门和压力表,在使用时,将检测组件的进气端与储气瓶连通,出气端与被测件连通,打开阀门为被测件充气,充气完毕后关闭阀门进行保压,观察压力表判断被测件的气密性,使用完毕后,可将检测组件收入箱内,人可随手携带,实现真正的便携。 [0014] Advantageous effects of the present invention are: the present invention uses a portable test box, the box is provided in the detection cylinder assembly and testing, and inspection cylinders are disposed in the detection tank assembly, easy to carry along, the detection assembly includes inlet end and outlet end, the inlet end toward the outlet end direction, are sequentially provided with a valve and pressure gauge, in use, inlet end communicating with the cylinder detector assembly in communication with the outlet end of the device under test, the valve is opened It is the measured inflatable member, when inflated finished packing for closing the valve, the DUT to observe the pressure gauge is determined airtightness, after use, the income may be detected inside the assembly, who may be readily portable, real portability.

[0015] 检测组件至少有两组,可测量至少两个被测件,提高检测效率。 [0015] At least two detection means, at least two test pieces to measure, improve the detection efficiency.

[0016] 检测箱包括箱体和箱盖,储气瓶放置在箱体内,检测组件放置在箱盖内,检测箱使用时,将检测箱的箱盖打开,检测组件位于箱盖内,检测箱内的部件分开放置,可充分利用检测箱的空间,减小检测箱的体积。 [0016] The test box comprises a box body and a cover, the cylinder is placed in the housing, the cover assembly is placed in the detection, detection using the box, the box lid openness detecting detects lid assembly positioned within the detection box separately placed within the member, the space can make full use of the test box, reducing the volume of the detection box.

[0017] 检测箱的箱体和箱盖分体设置,储气瓶上连接有供气管,打开箱盖后,将供气管与检测组件的进气端连接,可移动箱盖靠近被测件,方便检测组件的出气端与被测件连接。 [0017] The test box and the cover of the housing separately provided, with a supply pipe connected to the cylinder, the lid is opened, the supply pipe and the inlet end is connected to the detection assembly, the movable cover close to the DUT, convenient detection component is connected to the outlet end of the DUT.

[0018] 检测组件上设有快速接头,方便供气管与检测组件连接和拆卸。 [0018] The quick connector assembly is provided on the detector, and the supply pipe to facilitate attachment and detachment detection assembly.

附图说明 BRIEF DESCRIPTION

[0019]图1是本发明气密性检测装置的实施例1的外形结构示意图; [0019] FIG. 1 is a leak detection device of the present invention a schematic configuration example of an outer shape of the embodiment;

图2是本发明气密性检测装置实施例1箱体内的结构示意图; The present invention FIG. 2 is a schematic structural diagram of leak detection apparatus according to an embodiment of the cabinets;

图3是本发明气密性检测装置实施例1箱盖内的结构示意图; The present invention FIG 3 is a schematic structural diagram of leak detection apparatus according to the embodiment of the lid 1;

图中:1、箱体,2、箱盖,3、提手,4、供气管,5、充气管,6、快速接头,7、工具仓,8、检测组件,81、压力表,8 2、检测阀门,9、校准组件。 In FIG: 1, the housing 2, the lid 3, the handle 4, feed pipe 5, inflatable tube 6, the quick connector, 7, tool cartridge 8, detection component 81, pressure gauge, 82 detecting valve, 9, calibration components.

具体实施方式 detailed description

[0020] 本发明气密性检测装置的实施例1,如图1-3所示,该气密性检测装置为便携式箱体结构,包括便携式的检测箱,检测箱包括箱体I和箱盖2,箱体I和箱盖2分体设置,箱体I的相对两侧设有供人手持的提手3,方便人工搬运移动。 [0020] Example embodiments of the leak detection apparatus 1 according to the present invention, shown in Figure 1-3, the airtightness detection device is a portable box structure, comprising a portable test box, and the detection box comprises a box body cover I 2, the housing 2 and the cover I separately disposed on opposite sides of the casing I is provided for the person holding the handle 3, to facilitate manual handling movement.

[0021] 检测箱内设有检测组件8和储气瓶(图中未画出),储气瓶设置在箱体I内部,检测组件8设置在箱盖2的夹层内,储气瓶上连接有充气管5,充气管上设有充气阀门,充气管5远离储气瓶的一端设有接头,当储气瓶内气体不足时,充气管5的接头可从箱体内取出,使接头连接气源,打开充气阀门进行充气;储气瓶上还连接有供气管4,供气管4上设有供气阀门,供气管4用于与检测组件8连接;检测组件8包括进气端和出气端,检测组件8包括由进气端朝出气端依次设有的检测阀门82和压力表81,检测组件8的进气端用于与供气管4连接,出气端用于与被测件连接。 [0021] The detection box with the detection assembly 8 and the cylinder (not shown), the cylinder disposed inside the case I, the detection assembly disposed within the interlayers 8 cover 2 is connected to the cylinder there inflatable tube 5, a pneumatic valve is provided on the inflatable tube 5 inflation tube end remote from the cylinder connector is provided, when the gas cylinder is insufficient gas inflation tube 5 may be removed from the connector housing, so that the air header source, opening the valve for inflating the inflator; cylinder also connected to the supply duct 4, the supply is provided on the supply pipe 4, a feed pipe 4 connected to the detection assembly 8; detection assembly 8 includes an intake end and an outlet end 8 includes a inlet end toward the outlet end of the detection sequence with the inlet end of the valve assembly 82 and pressure gauge 81 is detected, for detection component 8 is connected to the supply duct 4, the outlet end for connection to the DUT.

[0022] 本实施例中,检测组件8共有4组,4组检测组件设置在箱盖的夹层内,在其他实施例中,检测组件8可设置2组、3组、5组、6组等等;供气管4与检测组件的进气端可拆连接,为了能够节省空间,本实施例中,供气管4不设置支管,供气管4每次只与一组检测组件连接,供气管4可与任意一组检测组件8的进气端可拆连接;供气管4与检测组件连接的一端设有快速接头6,检测组件的进气端对应设有与快速接头配合的接口。 [0022] In this embodiment, the detection assembly 8 there are four groups, group 4 detects the sandwich assembly is disposed within the cover, in other embodiments, the detection unit 8 may be provided two groups, group 3, group 5, group 6, etc. and the like; supply duct is detachably connected to an intake 4 of the detector assembly, in order to save space, the present embodiment 4 is not provided for the branch pipe, each supply duct 4 is connected to a set of detectors only assemblies, can supply duct 4 detachably connected to the inlet end of any group of a detection assembly 8; supply duct 4 has one end connected to the detection assembly is provided with a quick joint 6, the inlet end is provided with detecting means corresponding to the quick connector mating interface. 箱体I内设有控制面板和工具仓7,控制面板上设有用于操作充气阀门、供气阀门的气路开关,工具仓中放置充气管和供气管,使用时,将气管从工具仓内取出,不使用时,将气管放入工具仓内,统一管理,方便且整洁。 When equipped with the control panel box I and the tool magazine 7, the control panel is provided for operating the pneumatic valves, the air supply passage switching valve, the tool magazine and placed in the pneumatic feed pipe tube, using the tool cartridge from the endotracheal removed when not in use, the tool cartridge into the trachea, unified management, convenient and clean.

[0023] 本发明在使用时,打开箱盖,从工具仓中取出供气管,供气管4与其中一个待测组件的进气端连接,检测组件的出气端与被测件连接,连接被测件时,可将移动箱盖,将检测组件靠近被测件,方便连接;在控制面板上操作气路开关,打开供气阀门,打开该检测组件的检测阀门,对被测件进行充气,充气完毕后,关闭该检测组件的检测阀门进行保压,随后,将供气阀门关闭,可将供气管4从该检测组件上拔下,与另外一组检测组件的进气端连接进行检测;当待测组件较多时,该气密性检测装置的4组检测组件分别与4个被测件连接,供气管4依次与各组检测组件连接进行充气,保压期间,观察各组检测组件的压力表是否有变化,可判断出每一个待测组件的气密性是否良好。 [0023] The present invention is in use, the lid is opened, removed from the tool magazine feed pipe, wherein the supply duct 4 and the inlet end of a component under test is connected, the outlet end of the detection component DUT connection, the connection test when the member, the lid can be moved, the detection component near the DUT, easy connection; superficial gas passage on the control panel switch, open the gas valve, the valve opening detection of the detection assembly of the DUT inflating inflatable after completion, the valve closing detecting means detects packing is, then the gas valve is closed, can be disconnected from the supply duct 4 the detection component is connected to the inlet end of another group detection component detecting; if when many test assembly, four groups of the leak detection assembly detecting means 4 are connected to the device under test, a pneumatic supply pipe 4 sequentially detecting assembly is connected to each group, during the dwell, observation of the pressure detection assembly of each group tABLE whether there are changes, the airtightness can be determined for each measured component is good. 在其他实施例中,可根据需要设置不同数量的检测组件,在使用时,可同时将充气管与气源连接,打开充气阀门,可一边为储气瓶充气一边检测被测件。 In other embodiments, a different number may be provided as necessary detection assembly, in use, the inflatable tubes can be simultaneously connected to a gas source, opening the pneumatic valves, while the pneumatic cylinder is detected while the DUT.

[0024] 本实施例中,还设置了用于检测储气瓶气压的校准组件9,该校准组件9包括压力表,可检测储气瓶内的压力,以便及时补充气体达到设定的压力值,保证装置的使用性能。 Pressure [0024] In this embodiment, the calibration components are also provided for detecting the pressure cylinder 9, the alignment assembly comprises a pressure gauge 9, a pressure gas cylinder may be detected in order to replenish the gas reaches a set value to ensure device performance.

[0025] 在本发明的其他实施例中,供气管4上可连接与检测组件数量相同的支管,各个支管分别与各组检测组件连接。 [0025] In other embodiments of the present invention, the supply tube can be connected to the same number of components on the detection pipe 4, each of the branch pipes are respectively connected to each set of detection components.

[0026] 在本发明的其他实施例中,可将检测组件、储气瓶、供气管、充气管统一放置在箱体内,箱盖可连接在箱体上,供气管可与检测组件的进气端固定连接。 [0026] In other embodiments of the present invention, the components can be detected, the cylinder, the air supply pipe, uniform inflation tube is placed in the housing, the housing cover may be connected to the feed tube assembly can be detected intake end fixedly connected.

Claims (9)

  1. 1.气密性检测装置,其特征在于:包括便携式的检测箱,检测箱内设有储气瓶和检测组件,所述检测组件包括用于与储气瓶连通的进气端和用于与被测件连通的出气端,检测组件还包括由进气端朝出气端方向依次设置的阀门和压力表。 1. The leak detection apparatus comprising: a portable test box, the box with the detection and detecting cylinder assembly, said detection assembly includes an intake port for communicating with a cylinder and with a DUT communication outlet end, the detection assembly further includes a valve and a pressure gauge by the inlet end toward the outlet end direction are sequentially disposed.
  2. 2.根据权利要求1所述的气密性检测装置,其特征在于:检测箱内设有至少两组所述检测组件,各组检测组件均具有用于与储气瓶连通的进气端。 2. The leak detection apparatus according to claim 1, wherein: said detection box provided with at least two detection assemblies, each having a set of detection components are inlet end for communicating with the cylinder.
  3. 3.根据权利要求1或2所述的气密性检测装置,其特征在于:所述检测箱包括箱体和箱盖,所述储气瓶位于箱体内,所述检测组件位于箱盖内。 The leak detection apparatus according to claim 1, wherein: said box includes a box body and a cover detecting, cabinets located in the cylinder, is located within the detector cover assembly.
  4. 4.根据权利要求3所述的气密性检测装置,其特征在于:所述箱体内设有控制面板,控制面板上设有用于控制储气瓶的气路开关。 4. The leak detection apparatus according to claim 3, wherein: said box body is provided with a control panel, provided with a control switch for controlling a gas passage cylinder on the control panel.
  5. 5.根据权利要求3所述的气密性检测装置,其特征在于:所述箱盖和箱体分体设置,所述检测箱内设有与储气瓶连接的、远离储气瓶的一端用于与检测组件连接的供气管。 The leak detection apparatus according to claim 3, wherein: the lid and the box is provided separately, detecting an end of the tank connected to the cylinder is provided, away from the cylinder a supply tube connected to the detection assembly.
  6. 6.根据权利要求5所述的气密性检测装置,其特征在于:所述供气管与任一组检测组件可拆连接,所述供气管用于与检测组件连接的一端设有快速接头,各组检测组件的进气端均设有用于与快速接头配合的接口。 6. The leak detection apparatus according to claim 5, wherein: said supply tube and a set of detectors according to any releasable connection assembly, for the air supply pipe having one end connected to the detection assembly is provided with a quick connector, the inlet end of each group are provided with detection means for quick coupling with a mating interface.
  7. 7.根据权利要求1或2所述的气密性检测装置,其特征在于:所述检测箱内设有与储气瓶连接的、用于为储气瓶充气的充气管。 The leak detection apparatus according to claim 1, wherein: the inflator is provided inside said detection pipe is connected with the cylinder for the cylinder is inflated.
  8. 8.根据权利要求1或2所述气密性检测装置,其特征在于:所述检测箱内设有用于检测储气瓶内压力的校准组件,校准组件包括压力表。 1 or 2 according to the leak detection apparatus as claimed in claim, wherein: said tank is provided with a calibration detector assembly for detecting the pressure of the gas cylinder, comprising a calibration gauge assembly.
  9. 9.根据权利要求1或2所述的气密性检测装置,其特征在于:所述检测箱上设有可供人手持的提手。 9. The leak detection apparatus according to claim 12, wherein: said detector is provided for the person holding the handle of the box.
CN 201510211205 2015-04-29 2015-04-29 Air tightness detection device CN104848999A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756072A (en) * 1971-12-27 1973-09-04 Youngstown Miller Corp Portable leak test instrument
US4417465A (en) * 1981-11-30 1983-11-29 Noe Renato R Portable test unit, for high pressure testing of tubes
US5440918A (en) * 1994-04-18 1995-08-15 Oster; Earl H. Portable piping-and-pump-system testing apparatus
CN102095559A (en) * 2011-01-07 2011-06-15 山东电力研究院 Calibration device of on-line SF6 (sulfur hexafluoride)-O2 leak monitoring alarm
CN102243130A (en) * 2011-04-21 2011-11-16 上海理工大学 Gas tightness detection device of high speed train
CN202057466U (en) * 2011-04-21 2011-11-30 上海理工大学 Device for detecting airtightness of high speed train
CN204705451U (en) * 2015-04-29 2015-10-14 凯迈(洛阳)气源有限公司 Airtight perfromance detection device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756072A (en) * 1971-12-27 1973-09-04 Youngstown Miller Corp Portable leak test instrument
US4417465A (en) * 1981-11-30 1983-11-29 Noe Renato R Portable test unit, for high pressure testing of tubes
US5440918A (en) * 1994-04-18 1995-08-15 Oster; Earl H. Portable piping-and-pump-system testing apparatus
CN102095559A (en) * 2011-01-07 2011-06-15 山东电力研究院 Calibration device of on-line SF6 (sulfur hexafluoride)-O2 leak monitoring alarm
CN102243130A (en) * 2011-04-21 2011-11-16 上海理工大学 Gas tightness detection device of high speed train
CN202057466U (en) * 2011-04-21 2011-11-30 上海理工大学 Device for detecting airtightness of high speed train
CN204705451U (en) * 2015-04-29 2015-10-14 凯迈(洛阳)气源有限公司 Airtight perfromance detection device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王立新 主编: "《箱包设计与制作工艺(第二版)》", 31 January 2014 *

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