CN103671291A - Micro-pressure air exhaust device - Google Patents
Micro-pressure air exhaust device Download PDFInfo
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- CN103671291A CN103671291A CN201310666933.XA CN201310666933A CN103671291A CN 103671291 A CN103671291 A CN 103671291A CN 201310666933 A CN201310666933 A CN 201310666933A CN 103671291 A CN103671291 A CN 103671291A
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- air exhaust
- pressure air
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Abstract
The invention belongs to the field of aircraft fuel systems, and particularly relates to a micro-pressure air exhaust device. The micro-pressure air exhaust device comprises an air collecting sediment barrel arranged at the bottom, wherein the bottom of the air collecting sediment barrel is provided with a drain outlet, the upper portion of the air collecting sediment barrel is provided with an air exhaust port, a venting port and a pressure measuring port, the air exhaust port is connected with detected equipment, the venting port is connected with a compressed air pipeline, and the pressure measuring port is connected with a U-shaped pipe meter. The micro-pressure air exhaust device is formed by assembling multiple simple parts, compressed air which is frequently used in a laboratory is used as power, air flow of an inlet is regulated through a hand switch, and the purpose of micro-pressure air exhaust can be achieved. The micro-pressure air exhaust device has the advantages of being simple in structure, low in cost, convenient to use, accurate to control, free of maintaining and the like, and is particularly suitable for the field of aircraft fuel. A method for generating micro pressure air exhaust can be used in the micro-negative-pressure and low-cost operation environment of industry, medical treatment, environment protection and other industries.
Description
Technical field
The invention belongs to Aviation Fuel system field, be specifically related to a kind of micro-pressure air extractor.
Background technique
Aircraft fuel system DC electropump is driven by direct current generator, in motor, there are the parts such as commutator, carbon brush, in the course of the work, the carbon dust that carbon brush abrasion gets off can accumulate in inner chamber, if got rid of not in time, will affect the conductive capability of commutator, accelerate carbon brush wearing and tearing, affect life-span of motor, in the time of seriously, can have influence on the fuel feeding of fuel pump and completing of aircraft task.Aboard, conventionally the low pressure port of motor cavity is placed in to the low pressure area of aircraft, is beneficial to flowing of air the carbon dust of inner chamber is sucked out, guarantee the normal use of product.But under ground condition, in the life test of fuel pump and direct current generator, also need simulated aircraft working environment, to causing a small negative pressure in the vented cavity of pump, the carbon dust that accumulates in motor cavity is sucked out, be conducive to the work of product, because this negative pressure only has the pressure of 50mm water column, the modes such as the industrial conventional vacuum pump that vacuumizes use, extraction pump are all difficult to realize or control.
Summary of the invention
Object of the present invention: propose a kind of slight pressure air extractor, utilizing the conventional pressurized air of test room is power, regulates the size of inlet air flow rate by hand switch, just can reach the object that micro-pressure is bled.
Technical solution of the present invention is: a kind of micro-pressure air extractor, comprise the gas collection precipitation cylinder 1 that is arranged on bottom, the bottom of gas collection precipitation cylinder 1 is provided with sewage draining exit 2, and top is respectively arranged with and the bleeding point 3 that is detected equipment connection, the relief opening 5 being connected with compressed air line 4, the pressure measurement mouth 7 that is connected with U-shaped pipe measuring meter 6.
On compressed air line 4, be provided with by-pass cock 8.
The advantage that the present invention has and beneficial effect: the device that the present invention is combined into by several simple parts, utilizing the conventional pressurized air of test room is power, by hand switch, regulate the size of inlet air flow rate, just can reach the object that micro-pressure is bled, there is simple in structure, with low cost, easy to use, precise control, do not need the advantages such as maintenance, be particularly suitable for and Aviation Fuel field.The device that designs production by the present invention, for the life test of certain product, substitutes the function of vacuum pump and regulating system thereof, has reached good effect, has saved a large amount of user costs and maintenance cost.In the present invention, producing the method that micro-pressure bleeds can use in the environment of small negative pressure, low cost movement in the industries such as industry, medical treatment, environmental protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.Refer to Fig. 1.
The present invention adopts the principle of air ejection suction, utilizing the conventional pressurized air of test room is power, by air extractor and inlet flow rate, regulate, realized the function of gas bleeding, regulate the size of inlet air flow rate, reach the object that micro-pressure is bled, there is simple in structure, easy to use, precise control, do not need the advantages such as maintenance.
Be specially: a kind of micro-pressure air extractor, comprise the gas collection precipitation cylinder 1 that is arranged on bottom, the bottom of gas collection precipitation cylinder 1 is provided with sewage draining exit 2, and top is respectively arranged with and the bleeding point 3 that is detected equipment connection, the relief opening 5 being connected with compressed air line 4, the pressure measurement mouth 7 that is connected with U-shaped pipe measuring meter 6.
On compressed air line 4, be provided with by-pass cock 8.
After this device access pressurized air, by jet, spray the low pressure forming, realized the function of gas bleeding, by regulating the size of inlet air flow rate, reach the object that micro-pressure is bled.Compressed air inlet access source of the gas on compressed air line, it is rear from relief opening 5 outflows that pressurized air enters compressed air line 4, at inner chamber, form low pressure area, the relative atmospheric pressure of pressure in gas collection precipitation cylinder 6 is negative pressure, and by the pressure of the bleeding point 3 of trial product also lower than atmospheric pressure, can suck gas from bleeding point 3, receive the U-shaped pipe measuring meter 6 of pressure measurement mouth 7 for measuring the pressure of bleeding point 3, when pressure does not meet the demands, can regulate force value by the by-pass cock 8 on compressed air line 4, make it in the scope of usage requirement, be generally 20～50mm water column.
After device work a period of time, the pollutants such as the carbon dust that is sucked out can be deposited in gas collection precipitation cylinder 1, can regularly discharge from being arranged on the sewage draining exit 2 of bottom.
The device that the present invention is combined into by several simple parts, utilizing the conventional pressurized air of test room is power, by hand switch, regulate the size of inlet air flow rate, just can reach the object that micro-pressure is bled, there is simple in structure, with low cost, easy to use, precise control, do not need the advantages such as maintenance, be particularly suitable for and Aviation Fuel field.The device that designs production by the present invention, for the life test of certain product, substitutes the function of vacuum pump and regulating system thereof, has reached good effect, has saved a large amount of user costs and maintenance cost.In the present invention, producing the method that micro-pressure bleeds can use in the environment of small negative pressure, low cost movement in the industries such as industry, medical treatment, environmental protection.
Claims (2)
1. a micro-pressure air extractor, it is characterized in that, comprise the gas collection precipitation cylinder [1] that is arranged on bottom, the bottom of gas collection precipitation cylinder [1] is provided with sewage draining exit [2], and top is respectively arranged with and the bleeding point that is detected equipment connection [3], the relief opening [5] being connected with compressed air line [4], the pressure measurement mouth [7] that is connected with U-shaped pipe measuring meter [6].
2. a kind of micro-pressure air extractor according to claim 1, is characterized in that, is provided with by-pass cock [8] on compressed air line [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666933.XA CN103671291A (en) | 2013-12-10 | 2013-12-10 | Micro-pressure air exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666933.XA CN103671291A (en) | 2013-12-10 | 2013-12-10 | Micro-pressure air exhaust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103671291A true CN103671291A (en) | 2014-03-26 |
Family
ID=50309811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310666933.XA Pending CN103671291A (en) | 2013-12-10 | 2013-12-10 | Micro-pressure air exhaust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040672A (en) * | 2016-06-23 | 2016-10-26 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device for sucking carbon powder in motor |
| CN107243485A (en) * | 2016-08-29 | 2017-10-13 | 中国航空工业集团公司金城南京机电液压工程研究中心 | The device of carbon dust in a kind of suction motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52118211U (en) * | 1976-03-06 | 1977-09-07 | ||
| CN1202581A (en) * | 1997-06-18 | 1998-12-23 | 金川有色金属公司 | Method and device for removing oil mist and oil smoke |
| CN1232939A (en) * | 1998-04-18 | 1999-10-27 | 田国华 | Injection type kitchen ventilator |
| CN101798518A (en) * | 2010-03-19 | 2010-08-11 | 中国石油天然气集团公司 | Top gas confluence method and device of atmospheric and vacuum distillation tower |
| CN201815655U (en) * | 2010-09-13 | 2011-05-04 | 宁波日锋模具制造有限公司 | Metal mould negative pressure air extractor |
-
2013
- 2013-12-10 CN CN201310666933.XA patent/CN103671291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52118211U (en) * | 1976-03-06 | 1977-09-07 | ||
| CN1202581A (en) * | 1997-06-18 | 1998-12-23 | 金川有色金属公司 | Method and device for removing oil mist and oil smoke |
| CN1232939A (en) * | 1998-04-18 | 1999-10-27 | 田国华 | Injection type kitchen ventilator |
| CN101798518A (en) * | 2010-03-19 | 2010-08-11 | 中国石油天然气集团公司 | Top gas confluence method and device of atmospheric and vacuum distillation tower |
| CN201815655U (en) * | 2010-09-13 | 2011-05-04 | 宁波日锋模具制造有限公司 | Metal mould negative pressure air extractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040672A (en) * | 2016-06-23 | 2016-10-26 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device for sucking carbon powder in motor |
| CN107243485A (en) * | 2016-08-29 | 2017-10-13 | 中国航空工业集团公司金城南京机电液压工程研究中心 | The device of carbon dust in a kind of suction motor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |