CN105466647A - Bogie gas tightness detection device and detection method thereof - Google Patents
Bogie gas tightness detection device and detection method thereof Download PDFInfo
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- CN105466647A CN105466647A CN201510793963.6A CN201510793963A CN105466647A CN 105466647 A CN105466647 A CN 105466647A CN 201510793963 A CN201510793963 A CN 201510793963A CN 105466647 A CN105466647 A CN 105466647A
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- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
Abstract
A bogie gas tightness detection device and a detection method thereof relate to the technical field of railway passenger car bogie welding and assembling. The detection device comprises a helium storage tank, a gas power unit, a digital display pressure controller, a gas distribution pipe, a pressure maintaining pipe, a needle valve, a digital pressure gauge, an exhaust valve, and a helium detector. The gas power unit feeds helium in the helium storage tank into the pressure maintaining pipe according to a set pressure. The pressure maintaining pipe offers pipe interfaces of a variety of specifications and models to be connected with a brake pipe. During test, gas of a set pressure is fed into the brake pipe, the reading of the digital pressure gauge is observed, and the needle valve is closed when the pressure reaches a specified pressure value. The helium detector is adopted to detect the brake pipe, and the leakage position is recorded when the detector alarms. The detection device of the invention has the characteristics of small size, low weight and high accuracy of detection. Detection does not rely on an external air source, and the pressure of output gas can be adjusted. The detection device and the detection method are applicable to gas tightness detection under all kinds of requirements.
Description
Technical field
The present invention relates to railway passenger car bogie assemble welding technical field, be specifically related to a kind of bogie air-tightness detection device and detection method thereof.
Background technology
At present, the sealing propertytest of framework air chamber and braking pipeline for bogie, all adopts and injects mode that authorised pressure observed pressure represent that number changes to judge the sealing of detected workpiece.By suds being spread upon weld seam and pipe interface position, observing and whether having bubble to produce, thus confirm gas leakage point position.But for the bubble that the defect of pipeline own and small leak source produce, operator is difficult to find, is unfavorable for searching of gas leakage point, greatly reduces the work efficiency of operator.Meanwhile, due to bogie and car body entirety complete after, narrow space under car, cannot use classic method to carry out leak source investigation to whole pipeline.In addition, there is the problems such as pressure is low, blast is unstable in the wind regime provided due to test site, directly affects enforceability and the accuracy of pressurize test.
Summary of the invention
In order to solve the limited and ND problem of tiny leak source of seek scope that existing suds detection method exists, test is by the problem of place wind regime restriction, cannot to the problem of all regional search leak sources of brake piping after bogie and car body complete, and the technical matters of pressurizer poor universality, the invention provides a kind of bogie air-tightness detection device and detection method thereof.
The technical scheme that technical solution problem of the present invention is taked is as follows:
A kind of bogie air-tightness detection device, it comprises gas distributing system, pressurizer and Nitrogen Detector, gas distributing system comprises aerodynamic force unit, helium gas-holder, pressure controller with digital display and distribution pipeline, and pressurizer comprises needle-valve, pressurize pipeline, digital display manometer and vent valve; Aerodynamic force unit is connected with helium gas-holder, helium gas-holder, pressure controller with digital display, distribution pipeline, needle-valve, pressurize pipeline, digital display manometer, the brake piping of bogie, vent valve connect in turn, and the probe of Nitrogen Detector is connected to inlet end and the outlet side of brake piping; Aerodynamic force unit is used for the helium in helium gas-holder to be filled with in pressurize pipeline according to set pressure through distribution pipeline, pressure controller with digital display is for controlling the gaseous tension in distribution pipeline, the needle-valve gaseous tension be used in pressurize pipeline turns off distribution pipeline when reaching setup pressure value, digital display manometer is for showing the gaseous tension in pressurize pipeline, and vent valve is for the gas in emptying brake piping after off-test; Whether Nitrogen Detector has leakage point for detecting brake piping, and when detecting leakage point, detector can send warning.
Above-mentioned pressurize pipeline is provided with the pipe interface of plurality of specifications and model, for connecting from the braking pipeline for bogie of different pipe interface.
Based on the detection method of above-mentioned bogie air-tightness detection device, comprise the steps:
The switch of the first step, unlatching aerodynamic force unit, the output pressure of setting helium gas-holder, closes needle-valve;
Second step, pressure controller with digital display is adjusted to starting state, the output pressure of setting distribution pipeline, opens needle-valve, in pressurize pipeline, injects helium;
3rd step, when the registration of the digital display manometer in pressurize pipeline reaches 600KPa, close needle-valve, and timing 900s;
4th step, unlatching Nitrogen Detector, use probe to detect the pipe shaft of brake piping and interface thereof, once detector sends warning, and record leak position;
After 5th step, timing 900s, the resulting pressure number of record digital display manometer; Open the gas in vent valve emptying brake piping, remove brake piping, re-start the operation of the first step to the 5th step, until the requirement not having leakage point or quantity of gas leakage to meet brake piping design standards stops detecting.
Beneficial effect of the present invention is as follows:
1) this pick-up unit has little, the lightweight feature of volume, disobeys outer boundary wind regime and output gas pressure is adjustable, is applicable to the air-leakage test of various requirement.This device is equipped with multiple interfaces form simultaneously, can carry out air-tight test for the bogie of different pipe interface.
2) detection method using this pick-up unit to provide can not leave liquid soap or other spots at piece surface.For small space, the detection probe carried by use equipment, the position that can be good at suds observation method cannot detect is detected.Simultaneously compared with suds observation method, this pick-up unit better can find the small leak source at part itself, interface and weld seam position.
3) accuracy in detection of this pick-up unit is high, can get rid of the problem that cannot find leak source because artificial observation is possibly.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram of bogie air-tightness detection device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 1, bogie air-tightness detection device of the present invention is by gas distributing system, pressurizer and Nitrogen Detector (e.g., HNT/he-c-f person of outstanding talent's nanotesla portable helium purity detecting instrument) composition.Gas distributing system is made up of helium gas-holder, aerodynamic force unit (e.g., gloomy open up STW-02-A-L), pressure controller with digital display (e.g., YMK-100), distribution pipeline.Helium in gas-holder is filled in pressurizer according to set pressure by aerodynamic force unit.Pressurizer is made up of pressurize pipeline, needle-valve (e.g., J21W/H), digital display manometer (e.g., safe prestige intelligence reaches ZD-200), vent valve.Pressurizer provides plurality of specifications to be connected with brake piping with the pipe interface of model.During test, be filled with the gas of set pressure to brake piping, observe the manometric registration of digital display, after reaching authorised pressure value, close needle-valve.Nitrogen Detector is used to detect brake piping, when detector is reported to the police, record leakage position.
The detection method of bogie air-tightness detection device of the present invention comprises the steps:
The switch of the first step, unlatching aerodynamic force unit, the output pressure of setting helium gas-holder, closes needle-valve;
The pipe interface that second step, selection are applicable to, is connected braking pipeline for bogie to be measured with distribution pipeline; And pressure controller with digital display is adjusted to starting state, the output pressure of setting distribution pipeline, opens needle-valve, in pressurize pipeline, injects helium;
3rd step, when the registration of the digital display manometer in pressurize pipeline reaches 600KPa, close needle-valve, and timing 900s;
4th step, unlatching Nitrogen Detector, use probe to detect the pipe shaft of brake piping and interface thereof, once detector sends warning, and record leak position;
After 5th step, timing 900s, the resulting pressure number of record digital display manometer; Open the gas in vent valve emptying brake piping, remove brake piping, re-start the operation of the first step to the 5th step, until the requirement not having leakage point or quantity of gas leakage to meet brake piping design standards stops detecting.
Claims (3)
1. a bogie air-tightness detection device, it is characterized in that, this device comprises gas distributing system, pressurizer and Nitrogen Detector, gas distributing system comprises aerodynamic force unit, helium gas-holder, pressure controller with digital display and distribution pipeline, and pressurizer comprises needle-valve, pressurize pipeline, digital display manometer and vent valve; Aerodynamic force unit is connected with helium gas-holder, helium gas-holder, pressure controller with digital display, distribution pipeline, needle-valve, pressurize pipeline, digital display manometer, the brake piping of bogie, vent valve connect in turn, and the probe of Nitrogen Detector is connected to inlet end and the outlet side of brake piping; Aerodynamic force unit is used for the helium in helium gas-holder to be filled with in pressurize pipeline according to set pressure through distribution pipeline, pressure controller with digital display is for controlling the gaseous tension in distribution pipeline, the needle-valve gaseous tension be used in pressurize pipeline turns off distribution pipeline when reaching setup pressure value, digital display manometer is for showing the gaseous tension in pressurize pipeline, and vent valve is for the gas in emptying brake piping after off-test; Whether Nitrogen Detector has leakage point for detecting brake piping, and when detecting leakage point, detector can send warning.
2. a kind of bogie air-tightness detection device as claimed in claim 1, it is characterized in that, described pressurize pipeline is provided with the pipe interface of plurality of specifications and model, for connecting from the braking pipeline for bogie of different pipe interface.
3., based on the detection method of bogie air-tightness detection device described in claim 1 or 2, it is characterized in that, the method comprises the steps:
The switch of the first step, unlatching aerodynamic force unit, the output pressure of setting helium gas-holder, closes needle-valve;
Second step, pressure controller with digital display is adjusted to starting state, the output pressure of setting distribution pipeline, opens needle-valve, in pressurize pipeline, injects helium;
3rd step, when the registration of the digital display manometer in pressurize pipeline reaches 600KPa, close needle-valve, and timing 900s;
4th step, unlatching Nitrogen Detector, use probe to detect the pipe shaft of brake piping and interface thereof, once detector sends warning, and record leak position;
After 5th step, timing 900s, the resulting pressure number of record digital display manometer; Open the gas in vent valve emptying brake piping, remove brake piping, re-start the operation of the first step to the 5th step, until the requirement not having leakage point or quantity of gas leakage to meet brake piping design standards stops detecting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510793963.6A CN105466647A (en) | 2015-11-18 | 2015-11-18 | Bogie gas tightness detection device and detection method thereof |
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| CN201510793963.6A CN105466647A (en) | 2015-11-18 | 2015-11-18 | Bogie gas tightness detection device and detection method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270925A (en) * | 2016-09-30 | 2017-01-04 | 中车南京浦镇车辆有限公司 | Sleeper beam welding Tracheal reconstruction technique |
| CN107014570A (en) * | 2017-06-20 | 2017-08-04 | 苏州博众精工科技有限公司 | A kind of air-tightness detection device and method |
| CN107449561A (en) * | 2017-06-13 | 2017-12-08 | 中车青岛四方机车车辆股份有限公司 | The detection method of bogie brakes leakage |
| CN107576458A (en) * | 2017-09-26 | 2018-01-12 | 安徽安凯汽车股份有限公司 | A kind of brake line of automobile air-tightness automatic detection device and its detection method |
| CN107900561A (en) * | 2017-10-27 | 2018-04-13 | 中车青岛四方机车车辆股份有限公司 | A kind of welding quality control method and device of sealing weld |
| CN113731202A (en) * | 2021-09-06 | 2021-12-03 | 苏州晟宇气体设备有限公司 | Full-automatic intelligent distribution equipment |
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| CN106270925A (en) * | 2016-09-30 | 2017-01-04 | 中车南京浦镇车辆有限公司 | Sleeper beam welding Tracheal reconstruction technique |
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| CN107900561A (en) * | 2017-10-27 | 2018-04-13 | 中车青岛四方机车车辆股份有限公司 | A kind of welding quality control method and device of sealing weld |
| CN107900561B (en) * | 2017-10-27 | 2019-08-23 | 中车青岛四方机车车辆股份有限公司 | A kind of welding quality control method and device of sealing weld |
| CN113731202A (en) * | 2021-09-06 | 2021-12-03 | 苏州晟宇气体设备有限公司 | Full-automatic intelligent distribution equipment |
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