CN104697722A - Pipeline air tightness detection device - Google Patents
Pipeline air tightness detection device Download PDFInfo
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- CN104697722A CN104697722A CN201310659620.1A CN201310659620A CN104697722A CN 104697722 A CN104697722 A CN 104697722A CN 201310659620 A CN201310659620 A CN 201310659620A CN 104697722 A CN104697722 A CN 104697722A
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Abstract
The invention provides a pipeline air tightness detection device comprising a plugging portion, a water box and an air inlet pipe. The plugging portion is used for sealing an air outlet of a pipeline to be detected. The plugging portion and the pipeline to be detected are arranged below the liquid level in the water box. The air inlet pipe is communicated with an air inlet of the pipeline to be detected. In use, the worker feeds air in the pipeline to be detected through the air inlet pipe and observes whether or not air leakage occurs to the pipeline to be detected, especially connectors; if no bubbles occur in the water box, air tightness of the pipeline to be detected is proved to be good and applicable to evacuation; if the air entering the pipeline to be detected becomes the bubbles on the water, the pipeline to be detected is proved to be poor in air tightness and fails to be used for evacuation. By sealing the air outlet of the pipeline to be detected by the plugging portion, the air never flees out of the air outlet of the pipeline to be detected, accordingly guaranteeing user reliability of the pipeline air tightness detection device.
Description
Technical field
The present invention relates to pipeline detection technique field, more specifically, relate to a kind of device for detecting air tightness of pipeline.
Background technology
The off-premises station of air-conditioning, after completing assembling, can adopt vacuum pump to vacuumize process to system.Before vacuumizing process, need all kinds of flexible pipe vacuumized to be connected with vacuum pump by many siphunculus road (such as: six siphunculus roads).Therefore, whether the impermeability on many siphunculus road well affects the effect vacuumized and the work efficiency vacuumized.If the poor air-tightness on many siphunculus road, can cause cannot vacuumizing system or in system, residual air is not taken out to the greatest extent, when after refrigerant injected system, residual air affect the purity of refrigerant, thus the Energy Efficiency Ratio of reduction air-conditioning.
For six siphunculus roads, six siphunculus Lu Weiwu save stainless-steel pipe and are welded, and easily occur leak source and are difficult to find, thus have a strong impact on the effect vacuumized due to stainless-steel pipe weld.The bubble-tight pick-up unit for detecting many siphunculus road is not also had in prior art.
Summary of the invention
The present invention aims to provide a kind of device for detecting air tightness of pipeline, cannot the bubble-tight problem of signal piping in prior art to solve.
For solving the problems of the technologies described above, the invention provides a kind of device for detecting air tightness of pipeline, comprising: for sealing the portion of blocking up of the gas outlet of detected pipeline; Water tank, block up portion and detected pipeline are positioned at below the liquid level of water tank; Draft tube, is communicated with the air intake opening of detected pipeline.
Further, device for detecting air tightness of pipeline also comprises gas supply part, and gas supply part is communicated with draft tube.
Further, device for detecting air tightness of pipeline also comprises switch valve, and switch valve is arranged between gas supply part and draft tube.
Further, gas supply part is air pump.
Further, gas supply part is compressed gas cylinder.
Further, the portion of blocking up comprises: O-ring seal, and O-ring seal is arranged on the opening part of the gas outlet of detected pipeline; Gland bonnet, gland bonnet is located at the gas outlet place of detected pipeline, and O-ring seal is between gland bonnet and detected pipeline; For the first fixed cover detected pipeline and gland bonnet fixed, the first fixed cover is set in the outside of gland bonnet.
Further, the first fixed cover comprises: the first holder; Second holder, the first end of the first holder is connected pivotly with the first end of the second holder, and forms the grasping part being used for fixing detected pipeline and gland bonnet between the first holder and the second holder; Web member, the second end of the first holder is connected by web member with the second end of the second holder.
Further, the portion of blocking up is rubber plug.
Further, device for detecting air tightness of pipeline also comprises compressed air joint, and draft tube is communicated with by the air intake opening of compressed air joint with detected pipeline.
Further, device for detecting air tightness of pipeline also comprises the second fixed cover for detected pipeline and compressed air joint being fixed.
Portion of blocking up in the present invention is for sealing the gas outlet of detected pipeline, and block up portion and detected pipeline are positioned at below the liquid level of water tank, and draft tube is communicated with the air intake opening of detected pipeline.When using the device for detecting air tightness of pipeline in the present invention, staff needs in detected pipeline, to pass into gas by draft tube, then observe detected pipeline everywhere, particularly junction whether there is gas leak phenomenon, if do not have bubble to produce in water tank, then illustrate that the impermeability of detected pipeline is good, may be used for vacuumizing use.Overflow if the gas passed in detected pipeline becomes bubble in water, then detected pipeline poor air-tightness is described, can not be used for vacuumizing use.Because the portion of blocking up is by the gas outlet seal of detected pipeline, thus ensures that gas can not overflow from the gas outlet of detected pipeline, thus ensure that the dependability of device for detecting air tightness of pipeline.Meanwhile, the device for detecting air tightness of pipeline in the present invention has that structure is simple, the feature of low cost of manufacture.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the annexation schematic diagram of each parts in the device for detecting air tightness of pipeline in the present invention; And
Fig. 2 diagrammatically illustrates the structural representation of portion of blocking up in the present invention, the second fixed cover, compressed air joint and detected pipeline.
Reference numeral in figure: portion of 10, blocking up; 11, O-ring seal; 12, gland bonnet; 13, the first fixed cover; 13a, the first holder; 13b, web member; 20, water tank; 30, draft tube; 40, gas supply part; 50, switch valve; 60, compressed air joint; 70, the second fixed cover; 80, detected pipeline.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The invention provides a kind of device for detecting air tightness of pipeline.As depicted in figs. 1 and 2, device for detecting air tightness of pipeline comprises the portion of blocking up 10, water tank 20 and draft tube 30, block up portion 10 for sealing the gas outlet of detected pipeline 80, block up portion 10 and detected pipeline 80 is positioned at below the liquid level of water tank 20, and draft tube 30 is communicated with the air intake opening of detected pipeline 80.When using the device for detecting air tightness of pipeline in the present invention, staff needs in detected pipeline 80, to pass into gas by draft tube 30, then observe detected pipeline 80 everywhere, particularly junction whether there is gas leak phenomenon, if do not have bubble to produce in water tank 20, then illustrate that the impermeability of detected pipeline 80 is good, may be used for vacuumizing use.Overflow if the gas passed in detected pipeline 80 becomes bubble in water, then detected pipeline 80 poor air-tightness is described, can not be used for vacuumizing use 80.Because the portion of blocking up 10 is by the gas outlet seal of detected pipeline 80, thus ensures that gas can not overflow from the gas outlet of detected pipeline 80, thus ensure that the dependability of device for detecting air tightness of pipeline.Meanwhile, the device for detecting air tightness of pipeline in the present invention has that structure is simple, the feature of low cost of manufacture.
Device for detecting air tightness of pipeline in the present invention also comprises gas supply part 40, and gas supply part 40 is communicated with draft tube 30.Owing to being provided with gas supply part 40, thus can ensure when carrying out air tightness test, gas injects in detected pipeline 80 by draft tube 30, thus ensure that in detected pipeline 80, gas is sufficient, ensure the effect of air tightness test, and then improve the dependability of device for detecting air tightness of pipeline.
Preferably, gas supply part 40 is air pump.Gas in outside air is passed in detected pipeline 80 by draft tube 30 by air pump, thus ensures gassy in detected pipeline 80.In another preferred embodiment, gas supply part 40 is compressed gas cylinder.The compressed gas cognition stored in compressed gas cylinder passes in detected pipeline 80 by draft tube 30, to make gassy in detected pipeline 80.Certainly, if the pressure gas in compressed gas cylinder is colored gas, so more contribute to staff's observation test effect.This is because if detected pipeline 80 exists leak source, then colored gas can be entered in the water of water tank 20 by leak source, makes water variable color, thus makes detected pipeline 80 gas leak phenomenon more easily observed.
In embodiment as shown in Figure 1, device for detecting air tightness of pipeline also comprises switch valve 50, and switch valve 50 is arranged between gas supply part 40 and draft tube 30.Owing to being provided with switch valve 50, thus the on off operating mode of gas supply part 40 and draft tube 30 can be controlled, staff is by gauge tap valve 50, in detected pipeline 80, pass into gas time and tolerance can be selected, thus device for detecting air tightness of pipeline is had controllability is good, dependability is high feature.
Preferably, switch valve 50 is retaining valves.Because retaining valve has the function preventing gas backflow, thus can prevent the gas in detected pipeline 80 from flowing back in gas supply part 40 by draft tube 30, thus prevent the gas in reflux gas pollution gas supply part 40, or prevent because detected pipeline 80 internal gas pressure is excessive and gas pushed back in gas supply part 40, to cause the problem affecting pipeline air-leakage test effect.
In a not shown embodiment, device for detecting air tightness of pipeline does not arrange gas supply part 40, but the inlet end of draft tube 30 is provided with switch valve 50, and switch valve 50 is retaining valve.Staff uses the method for blowing to draft tube 30 to input gas in detected pipeline 80.Because switch valve 50 is retaining valve, thus when staff takes a breath, switch valve 50 can cut out, thus avoid the gas in detected pipeline 80 from the inlet end overflow of draft tube 30, thus ensure that the dependability of device for detecting air tightness of pipeline, ensure that the effect of pipeline air-leakage test.
In embodiment as shown in Figure 2, portion 10 of blocking up comprises O-ring seal 11, gland bonnet 12 and the first fixed cover 13, O-ring seal 11 is arranged on the opening part of the gas outlet of detected pipeline 80, gland bonnet 12 is located at the gas outlet place of detected pipeline 80, and O-ring seal 11 is between gland bonnet 12 and detected pipeline 80, first fixed cover 13 is for fixing detected pipeline 80 and gland bonnet 12, and the first fixed cover 13 is set in the outside of gland bonnet 12.Owing to being provided with gland bonnet 12 at the gas outlet place of detected pipeline 80, thus the gas outlet seal of detected pipeline 80 is lived by gland bonnet 12, thus prevents the gas in detected pipeline 80 from overflowing from gas outlet.Owing to arranging O-ring seal 11 between gland bonnet 12 and the gas outlet of detected pipeline 80, thus improve gland bonnet 12 and the sealing of detected pipeline 80, by the small gap shutoff of the two junction, thus improve the sealing property in the portion of blocking up 10.Owing to being provided with the first fixed cover 13, thus detected pipeline 80 is firmly fixed with gland bonnet 12 by the first fixed cover 13, thus avoid causing because detected pipeline 80 internal gas pressure is excessive the problem that gland bonnet 12 and detected pipeline 80 depart from, and then improve the dependability of device for detecting air tightness of pipeline, and ensure that the effect of pipeline air-leakage test.
In embodiment as shown in Figure 2, first fixed cover 13 comprises the first holder 13a, the second holder and web member 13b, the first end of the first holder 13a is connected pivotly with the first end of the second holder, and between the first holder 13a and the second holder, forming the grasping part being used for fixing detected pipeline 80 and gland bonnet 12, second end of the first holder 13a is connected by web member 13b with the second end of the second holder.Because the first holder 13a is connected pivotly with the second holder, thus the size of grasping part is variable, the size of such grasping part can carry out accommodation according to the connection of detected pipeline 80 and gland bonnet 12, thus ensures that detected pipeline 80 can firmly be connected with gland bonnet 12 by the first fixed cover 13.Staff, by adjusting connector 13b, can adjust the size of grasping part.Preferably, web member is the screw bolt and nut cooperatively interacted.Bolt is located in second end of the first holder 13a and the second end of the second holder, and nut coordinates with bolt locks the first holder 13a and the second holder.
Preferably, the first holder 13a and/or the second holder have the peripheral flange of moving for backstop gland bonnet 12 or detected pipeline 80.After gland bonnet 12 and detected pipeline 80 are fixed by the first holder and the second holder, the caping of gland bonnet 12 is to being located on flange.When the gas outlet end of detected pipeline 80 has contraction section, the flange of the opposite side of the first holder 13a and/or the second holder is just to the contraction section place being located at detected pipeline 80, thus make the gas outlet end of detected pipeline 80 and gland bonnet 12 be positioned at two side flanges of the first holder 13a and/or the second holder, and then ensure that the connection reliability of detected pipeline 80 and gland bonnet 12.
Certainly, portion 10 of blocking up can also be rubber plug.Staff uses rubber plug by the gas outlet seal of detected pipeline 80.On many siphunculus road, such as six siphunculus roads (please refer to Fig. 2), staff can select rubber plug by four gas outlet seal in five gas outlets of detected pipeline 80, then selects O-ring seal 11, gland bonnet 12 and the first fixed cover 13 by the 5th of detected pipeline 80 the gas outlet seal.Rubber plug and detected pipeline 80 need to adopt interference fit, come off from detected pipeline 80 to avoid rubber plug.Preferably, the length that rubber plug stretches in detected pipeline 80 is greater than 20mm.
In embodiment as shown in Figure 2, device for detecting air tightness of pipeline also comprises compressed air joint 60, and draft tube 30 is communicated with the air intake opening of detected pipeline 80 by compressed air joint 60.Owing to being provided with compressed air joint 60, thus ensure that the connection reliability of draft tube 30 and detected pipeline 80, and ensure that pressure gas can pass in detected pipeline 80 smoothly, thus improve the dependability of device for detecting air tightness of pipeline.
In embodiment as shown in Figure 2, device for detecting air tightness of pipeline also comprises the second fixed cover 70 for detected pipeline 80 and compressed air joint 60 being fixed.Preferably, the second fixed cover 70 is identical with the structure of the first fixed cover 13.Owing to compressed air joint 60 and detected pipeline 80 being fixed by the second fixed cover 70, thus ensure that the reliability that gas circuit connects, ensure that the dependability of device for detecting air tightness of pipeline and the effect of pipeline air-leakage test.
The using method of device for detecting air tightness of pipeline:
Step one, gas supply part 40, switch valve 50, draft tube 30, compressed air joint 60, portion 10, second fixed cover 70 of blocking up to be connected with detected pipeline 80, and to check whether each several part connects reliably;
Step 2, switch valve 50 to be opened, make compressed air pressure reach 0.04-0.05MPa;
Step 3, the detected pipeline 80 being provided with the portion of blocking up 10 is put into water tank 20, carry out air tight test.
Bubble whether is had to emerge around step 4, the detected pipeline 80 of observation.
It should be noted that, because device for detecting air tightness of pipeline relates to pressure vessel, thus staff must through fully training, grasp method of operating and could operation on duty after obtaining job qualification certificate.In use procedure, if device for detecting air tightness of pipeline occurs abnormal, then must close gas supply part 40 immediately and notify that relevant persons in charge follows up process.
Because the device for detecting air tightness of pipeline in the present invention can detect the impermeability of detected pipeline 80, thus on detected pipeline 80(particularly many siphunculus road) use before detect, the vacuum effectiveness of detected pipeline 80 can be guaranteed, thus effectively can ensure product quality and work efficiency in follow-up use, effectively avoid the problem that cannot vacuumize, and improve detection level and quality.In the example of air-conditioning assembling, detect qualified detected pipeline 80 through device for detecting air tightness of pipeline and be applied in system and vacuumize middle use, the refrigerant purity of the system that is fed into and the Energy Efficiency Ratio of air-conditioning can be ensured.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device for detecting air tightness of pipeline, is characterized in that, comprising:
For sealing the portion of blocking up (10) of the gas outlet of detected pipeline (80);
Water tank (20), described in block up portion (10) and described detected pipeline (80) be positioned at below the liquid level of described water tank (20);
Draft tube (30), is communicated with the air intake opening of described detected pipeline (80).
2. device for detecting air tightness of pipeline according to claim 1, is characterized in that, described device for detecting air tightness of pipeline also comprises gas supply part (40), and described gas supply part (40) is communicated with described draft tube (30).
3. device for detecting air tightness of pipeline according to claim 2, is characterized in that, described device for detecting air tightness of pipeline also comprises switch valve (50), and described switch valve (50) is arranged between described gas supply part (40) and described draft tube (30).
4. device for detecting air tightness of pipeline according to claim 2, is characterized in that, described gas supply part (40) is air pump.
5. device for detecting air tightness of pipeline according to claim 2, is characterized in that, described gas supply part (40) is compressed gas cylinder.
6. device for detecting air tightness of pipeline according to claim 1, is characterized in that, described in portion (10) of blocking up comprising:
O-ring seal (11), described O-ring seal (11) is arranged on the opening part of the gas outlet of described detected pipeline (80);
Gland bonnet (12), described gland bonnet (12) is located at the gas outlet place of described detected pipeline (80), and described O-ring seal (11) is positioned between described gland bonnet (12) and described detected pipeline (80);
For the first fixed cover (13) described detected pipeline (80) and described gland bonnet (12) fixed, described first fixed cover (13) is set in the outside of described gland bonnet (12).
7. device for detecting air tightness of pipeline according to claim 6, is characterized in that, described first fixed cover (13) comprising:
First holder (13a);
Second holder, the first end of described first holder (13a) is connected pivotly with the first end of described second holder, and forms the grasping part being used for fixing described detected pipeline (80) and described gland bonnet (12) between described first holder (13a) and described second holder;
Web member (13b), the second end of described first holder (13a) is connected by described web member (13b) with the second end of described second holder.
8. device for detecting air tightness of pipeline according to claim 1, is characterized in that, described in portion (10) of blocking up be rubber plug.
9. device for detecting air tightness of pipeline according to claim 1, it is characterized in that, described device for detecting air tightness of pipeline also comprises compressed air joint (60), and described draft tube (30) is communicated with by the air intake opening of described compressed air joint (60) with described detected pipeline (80).
10. device for detecting air tightness of pipeline according to claim 9, is characterized in that, described device for detecting air tightness of pipeline also comprises the second fixed cover (70) for described detected pipeline (80) and described compressed air joint (60) being fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659620.1A CN104697722A (en) | 2013-12-05 | 2013-12-05 | Pipeline air tightness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659620.1A CN104697722A (en) | 2013-12-05 | 2013-12-05 | Pipeline air tightness detection device |
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| CN104697722A true CN104697722A (en) | 2015-06-10 |
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| CN201310659620.1A Pending CN104697722A (en) | 2013-12-05 | 2013-12-05 | Pipeline air tightness detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525638A (en) * | 2017-08-23 | 2017-12-29 | 凯迈（洛阳）气源有限公司 | A kind of air-tightness detection device |
| CN107655632A (en) * | 2017-10-31 | 2018-02-02 | 电子科技大学中山学院 | Battery case sealing detection equipment for lithium battery production |
| CN108088029A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of leakage detection method of air-conditioning copper pipe |
| CN108225682A (en) * | 2018-04-11 | 2018-06-29 | 四川澳维采油设备有限公司 | A kind of valve secondary sealing detection device and detection method |
| CN108593219A (en) * | 2018-05-16 | 2018-09-28 | 珠海格力电器股份有限公司 | The sealing state detection method of air-conditioning duct, apparatus and system |
| CN109712843A (en) * | 2017-10-25 | 2019-05-03 | 惠州市沃特科尔电器有限公司 | Water purifier compression refrigerating system device for detecting gas tightness leakage |
| CN111811757A (en) * | 2020-07-22 | 2020-10-23 | 海信（山东）冰箱有限公司 | Method and structure for inspecting vacuum pipeline system for refrigerator |
| CN113092025A (en) * | 2021-05-10 | 2021-07-09 | 弥尔佩乐慈保健用品(苏州)有限公司 | Permeability and air tightness inspection device for plastic hose |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107525638A (en) * | 2017-08-23 | 2017-12-29 | 凯迈（洛阳）气源有限公司 | A kind of air-tightness detection device |
| CN109712843A (en) * | 2017-10-25 | 2019-05-03 | 惠州市沃特科尔电器有限公司 | Water purifier compression refrigerating system device for detecting gas tightness leakage |
| CN107655632A (en) * | 2017-10-31 | 2018-02-02 | 电子科技大学中山学院 | Battery case sealing detection equipment for lithium battery production |
| CN108088029A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of leakage detection method of air-conditioning copper pipe |
| CN108225682A (en) * | 2018-04-11 | 2018-06-29 | 四川澳维采油设备有限公司 | A kind of valve secondary sealing detection device and detection method |
| CN108593219A (en) * | 2018-05-16 | 2018-09-28 | 珠海格力电器股份有限公司 | The sealing state detection method of air-conditioning duct, apparatus and system |
| CN111811757A (en) * | 2020-07-22 | 2020-10-23 | 海信（山东）冰箱有限公司 | Method and structure for inspecting vacuum pipeline system for refrigerator |
| CN113092025A (en) * | 2021-05-10 | 2021-07-09 | 弥尔佩乐慈保健用品(苏州)有限公司 | Permeability and air tightness inspection device for plastic hose |
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Application publication date: 20150610 |
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| RJ01 | Rejection of invention patent application after publication |