CN103868665A - Airtight detection method of high-pressure gas circuit in fuel system - Google Patents
Airtight detection method of high-pressure gas circuit in fuel system Download PDFInfo
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- CN103868665A CN103868665A CN201410131282.9A CN201410131282A CN103868665A CN 103868665 A CN103868665 A CN 103868665A CN 201410131282 A CN201410131282 A CN 201410131282A CN 103868665 A CN103868665 A CN 103868665A
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Abstract
The invention relates to an airtight detection method of a high-pressure gas circuit in a fuel system, and belongs to the technical field of high-pressure gas circuit detection. According to the airtight detection method of the high-pressure gas circuit in the fuel system, a differential pressure method is used for conducting high-pressure airtight detection, before a high-pressure pipeline is inflated in the detection process, an inflation buffer device is connected to an inflation port, and the danger caused by too high instantaneous pressure due to improper operation in high-pressure inflation is avoided. Meanwhile, a step-by-step pressurization method is used for inflating, and the safety of the inflation process is further guaranteed.
Description
Technical field
The present invention relates to high-pressure gas circuit and check technical field, be specifically related to a kind of airtight inspection method of fuel system mesohigh gas circuit.
Background technology
The airtight inspection of high pressure is the last detection after guided missile fuel system has been assembled.The fundamental purpose of the airtight inspection of high pressure is the reliability that guarantees guided missile high-pressure gas circuit oil circuit abutting joint, guarantees that guided missile fuel system impermeability under the operating mode of high-pressure work is intact.The pressure duct charge pressure of general guided missile fuel system is 1Mpa-36Mpa, and main conduit line is the relevant oil circuit being connected with engine to relevant gas circuit or the fuel tank of gas cylinder connection.
The method of the airtight inspection of guided missile high pressure is at present mainly pressure differential method, the main operating process of this measuring method is that pressure duct is forced into specified pressure, carry out again the pressurize of certain hour, make fuel system internal pressure keep stablizing constant, enter again the voltage stabilizing period, within the voltage stabilizing time, pressure is set and changes requirement, to judge that whether high-pressure gas circuit impermeability is qualified.Utilize pressure differential method to carry out the airtight inspection of high pressure, although consistent with common low pressure inspection in principle, in high pressure checking process, there is certain security risk, therefore, except specifying factory building region to carry out, meet skill and pacify outside three provisioning requests, also need to improve the technological procedure of the airtight inspection of whole high pressure.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: how to improve the security in the checking process of fuel system mesohigh gas circuit.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of airtight inspection method of fuel system mesohigh gas circuit, comprise the following steps:
S1, between the inflation port of pressure duct and airtight inspecting equipment, be connected inflation snubber assembly;
S2, start described airtight inspecting equipment, to the inflation of pressurizeing step by step of described pressure duct;
S3, voltage stabilizing a period of time, judge whether pressure in pressure duct and the difference Δ P of external air pressure meet preset requirement, if do not meet, first bleed off pressure-air in the pressure duct investigation of leaking gas again, after investigation, return to step S1, until Δ P meets preset requirement; If meet preset requirement, check process finishes.
Preferably, described in step S2, pressurization inflation is specially step by step: divide and inflate for three times, be inflated to for the first time
, be inflated to for the second time
, be inflated to for the third time the airtight detected pressures of high pressure
Preferably, described a period of time is 10 minutes.
Preferably, described inflation snubber assembly comprises interconnective the first ventilating part and the second ventilating part, the diameter of described the first ventilating part is less than the diameter of the second ventilating part, and described the first ventilating part is connected with the inflation port of described pressure duct, described the second ventilating part is connected with described airtight inspecting equipment.
Preferably, the diameter of the second ventilating part is 12 times of diameter of the first ventilating part.
(3) beneficial effect
The present invention utilizes pressure differential method to carry out the airtight inspection of high pressure, and before pressure duct being inflated in checking process, connect inflation snubber assembly in inflation port, avoid when high-pressure aerated, due to misoperation, cause instantaneous pressure too high and produce danger, take pressurization step by step to inflate simultaneously, further ensured the security of gas replenishment process.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention;
Annexation schematic diagram between inflation snubber assembly and pressure duct and airtight detecting apparatus that Fig. 2 uses for method of the present invention;
The inflation snubber assembly inflation mathematical model schematic diagram that Fig. 3 uses for method of the present invention.
Embodiment
For making object of the present invention, content and advantage clearer, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the airtight inspection method that the invention provides a kind of fuel system mesohigh gas circuit adopts inflation snubber assembly, and checks in conjunction with pressurization step by step, comprises the following steps:
S1, is as shown in Figure 2 connected inflation snubber assembly 1 between the inflation port of the pressure duct 2 of test product and airtight inspecting equipment 3, guarantees the safety inflated speed to pressure duct 2;
Obtain mathematical model that safety inflated speed uses as shown in Figure 3.Gas replenishment process is an accelerator, can utilize the Bernoulli equation in circulation
calculate the safety inflated speed V of pressure duct
0, in formula
v
0be the speed of air-flow in pressure duct, V
1represent the speed of air-flow in snubber assembly.Therefore, while inflation to pressure duct, this inflation snubber assembly can protect test product not by the destruction of transient pressure well.
Described airtight inspecting equipment 3 is existing equipment.
S2, start described airtight inspecting equipment 3, to the inflation of pressurizeing step by step of described pressure duct 2; In the present embodiment, be inflated to for the first time
(representing the scope of 4MPa to 6MPa), be inflated to for the second time
(representing the scope of 19MPa to 21MPa), be inflated to for the third time the airtight detected pressures of high pressure
(representing the scope of 33MPa to 35MPa).
S3, voltage stabilizing 10 minutes, judge whether pressure in pressure duct 2 and the difference Δ P of external air pressure meet preset requirement, if do not meet, explanation has gas leakage, first bleed off pressure-air in pressure duct 2 investigation of leaking gas again, after investigation, return to step S1 and re-start airtight inspection, until Δ P meets preset requirement; If meet preset requirement, check process finishes.
As shown in Figure 3, described inflation snubber assembly 1 comprises interconnective the first ventilating part 101 and the second ventilating part 102, the diameter of described the first ventilating part 101 is less than the diameter of the second ventilating part 102, and described the first ventilating part 101 is connected with the inflation port of described pressure duct 2, described the second ventilating part 102 is connected with described airtight inspecting equipment 3.When the diameter of the second ventilating part 102 is 12 times of diameter of the first ventilating part 101, buffering effect is best.
As can be seen from the above embodiments, the present invention utilizes pressure differential method to carry out the airtight inspection of high pressure, and before pressure duct being inflated in checking process, connect inflation snubber assembly in inflation port, avoid when high-pressure aerated, due to misoperation, caused the too high and danger that produces of instantaneous pressure, take pressurization step by step to inflate simultaneously, further ensured the security of gas replenishment process.When the invention solves pressure duct and utilizing pressure differential method to detect, the security control measure of gases at high pressure gas replenishment processes, has guaranteed to utilize pressure reduction to send out the technological feasibility that detects pressure duct.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (5)
1. an airtight inspection method for fuel system mesohigh gas circuit, is characterized in that, comprises the following steps:
S1, between the inflation port of pressure duct and airtight inspecting equipment, be connected inflation snubber assembly;
S2, start described airtight inspecting equipment, to the inflation of pressurizeing step by step of described pressure duct;
S3, voltage stabilizing a period of time, judge whether pressure in pressure duct and the difference Δ P of external air pressure meet preset requirement, if do not meet preset requirement, first bleed off pressure-air in the pressure duct investigation of leaking gas again, after investigation, return to step S1, until Δ P meets preset requirement; If meet preset requirement, check process finishes.
2. the airtight inspection method of fuel system mesohigh gas circuit as claimed in claim 1, is characterized in that, described in step S2, pressurization inflation is specially step by step: divide and inflate for three times, be inflated to for the first time
, be inflated to for the second time
, be inflated to for the third time the airtight detected pressures of high pressure
.
3. the airtight inspection method of fuel system mesohigh gas circuit as claimed in claim 1, is characterized in that, described a period of time is 10 minutes.
4. the airtight inspection method of the fuel system mesohigh gas circuit as described in claim 1 or 2 or 3, it is characterized in that, described inflation snubber assembly comprises interconnective the first ventilating part and the second ventilating part, the diameter of described the first ventilating part is less than the diameter of the second ventilating part, and described the first ventilating part is connected with the inflation port of described pressure duct, described the second ventilating part is connected with described airtight inspecting equipment.
5. the airtight inspection method of fuel system mesohigh gas circuit as claimed in claim 4, is characterized in that, the diameter of the second ventilating part is 12 times of diameter of the first ventilating part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410131282.9A CN103868665B (en) | 2014-04-03 | 2014-04-03 | A kind of airtight inspection method of fuel system mesohigh gas circuit |
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| CN201410131282.9A CN103868665B (en) | 2014-04-03 | 2014-04-03 | A kind of airtight inspection method of fuel system mesohigh gas circuit |
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| CN103868665A true CN103868665A (en) | 2014-06-18 |
| CN103868665B CN103868665B (en) | 2017-04-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101469A (en) * | 2014-06-19 | 2014-10-15 | 佛山市美的清湖净水设备有限公司 | Leakage detection device of ultrafiltration water purification equipment and control method |
| CN106441933A (en) * | 2016-09-21 | 2017-02-22 | 奇瑞汽车股份有限公司 | Fuel oil system air permeability testing frame and its testing method |
| CN108562413A (en) * | 2018-06-13 | 2018-09-21 | 武汉金丰汽配有限公司 | A kind of air tightness of pipe fitting detection workbench |
| CN114323491A (en) * | 2021-12-22 | 2022-04-12 | 北京星航机电装备有限公司 | Automatic air tightness detection method for low-pressure system |
| CN114486100A (en) * | 2021-12-28 | 2022-05-13 | 盛瑞传动股份有限公司 | Method for detecting oil passage of brake outer hub |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437180A (en) * | 1993-11-19 | 1995-08-01 | Sowinski; Richard F. | Detection of natural gas within a customer's domain |
| CN201344854Y (en) * | 2008-09-28 | 2009-11-11 | 新泰市产品质量监督检验所 | Multifunctional air pressure and hydraulic pressure integrated testing machine |
| US20110132074A1 (en) * | 2004-03-02 | 2011-06-09 | Car-Ber Investments, Inc. | Apparatus and Method for Testing Lengths of Pipe |
| CN201974277U (en) * | 2011-02-16 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Air-tight testing device |
| CN202153199U (en) * | 2011-07-04 | 2012-02-29 | 中国化学工程第六建设有限公司 | Valve air pressure test device |
| CN203178140U (en) * | 2013-04-01 | 2013-09-04 | 嘉兴市美克斯机械制造有限公司 | Pressure test device |
-
2014
- 2014-04-03 CN CN201410131282.9A patent/CN103868665B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437180A (en) * | 1993-11-19 | 1995-08-01 | Sowinski; Richard F. | Detection of natural gas within a customer's domain |
| US20110132074A1 (en) * | 2004-03-02 | 2011-06-09 | Car-Ber Investments, Inc. | Apparatus and Method for Testing Lengths of Pipe |
| CN201344854Y (en) * | 2008-09-28 | 2009-11-11 | 新泰市产品质量监督检验所 | Multifunctional air pressure and hydraulic pressure integrated testing machine |
| CN201974277U (en) * | 2011-02-16 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Air-tight testing device |
| CN202153199U (en) * | 2011-07-04 | 2012-02-29 | 中国化学工程第六建设有限公司 | Valve air pressure test device |
| CN203178140U (en) * | 2013-04-01 | 2013-09-04 | 嘉兴市美克斯机械制造有限公司 | Pressure test device |
Non-Patent Citations (2)
| Title |
|---|
| 翁希旭等: "大型煤化工装置化工系统气密性试验总结", 《科技信息》, no. 5, 31 December 2011 (2011-12-31), pages 44 * |
| 黄耕农: "高温高压加氢装置工艺系统气密性试验", 《化工施工技术》, vol. 22, no. 3, 31 December 2000 (2000-12-31), pages 21 - 22 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101469A (en) * | 2014-06-19 | 2014-10-15 | 佛山市美的清湖净水设备有限公司 | Leakage detection device of ultrafiltration water purification equipment and control method |
| CN106441933A (en) * | 2016-09-21 | 2017-02-22 | 奇瑞汽车股份有限公司 | Fuel oil system air permeability testing frame and its testing method |
| CN108562413A (en) * | 2018-06-13 | 2018-09-21 | 武汉金丰汽配有限公司 | A kind of air tightness of pipe fitting detection workbench |
| CN114323491A (en) * | 2021-12-22 | 2022-04-12 | 北京星航机电装备有限公司 | Automatic air tightness detection method for low-pressure system |
| CN114323491B (en) * | 2021-12-22 | 2024-02-27 | 北京星航机电装备有限公司 | Automatic airtight detection method for low-voltage system |
| CN114486100A (en) * | 2021-12-28 | 2022-05-13 | 盛瑞传动股份有限公司 | Method for detecting oil passage of brake outer hub |
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|---|---|
| CN103868665B (en) | 2017-04-05 |
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