CN105865718A - Sealing performance testing apparatus of sealing structure - Google Patents

Sealing performance testing apparatus of sealing structure Download PDF

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Publication number
CN105865718A
CN105865718A CN201610182315.1A CN201610182315A CN105865718A CN 105865718 A CN105865718 A CN 105865718A CN 201610182315 A CN201610182315 A CN 201610182315A CN 105865718 A CN105865718 A CN 105865718A
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CN
China
Prior art keywords
pressure
sealing
regulator valve
pressure regulator
reserve tank
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CN201610182315.1A
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Chinese (zh)
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CN105865718B (en
Inventor
丁晓宇
张飞凯
刘检华
刘少丽
杨志猛
巩浩
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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Publication of CN105865718A publication Critical patent/CN105865718A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum

Abstract

The invention provides a sealing performance testing apparatus of a sealing structure, and relates to the field of mechanical engineering, aiming at addressing the problem of expensive prices and safety hazards of current some testing platforms established by researches. The apparatus includes: a high-pressure air output mechanism; a pressure regulating mechanism; an oil reserving tank which reserves a liquid sealing medium; a switch tool which is provided with a sealing cavity which is connected to the oil reserving tank, the sealing cavity being provided with an opening structure which cooperates with a to-be-measured static seal structure which is in cooperation connection to the sealing cavity through the opening structure; the high-pressure air output mechanism outputting an air of a first pressure to the pressure regulating mechanism, the pressure regulating mechanism regulating the air of the first pressure to an air of a second pressure and outputting the air of the second pressure to the oil reserving tank so as to pressure the liquid sealing medium inside the oil reserving tank to the inside of the sealing cavity. According to the invention, the technical solution can accurately measure sealing performances of the static seal structure, and is characterized by rapid assembling, low cost and safety and reliability.

Description

A kind of sealing property experimental provision sealing structure
Technical field
The present invention relates to mechanical engineering technical field, particularly to a kind of sealing property experiment dress sealing structure Put.
Background technology
Static seal structure is widely used in engineering, the automobile of either living closely bound up with people, aircraft Deng traffic machinery, still represent the Aero-Space machinery of Environment Science, use plane static seal structure the most in a large number. And the inefficacy of plane static seal often brings huge potential safety hazard, economic loss and environmental pollution.In order to Ensureing the sealing property of static seal structure, a large amount of scholars carry out experimentation to it, probe into sealing sealing structure The influence factor of performance.
Although experimentation has the biggest advantage in the research and application of static seal structure, but for testing Research provides the static seal structure sealing property experimental apparatus for testing supported less.Overwhelming majority research worker is all Being the experiment porch oneself built, some experiment porch is expensive, and some exists unstable properties very To being the problem with potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sealing property experimental provision sealing structure, solves Prior art lacks the experimental provision to the test of static seal structure sealing property, and some investigators oneself The experiment porch built is expensive, the problem even with potential safety hazard.
For solving above-mentioned technical problem, embodiments of the invention provide a kind of sealing property experiment sealing structure Device, including:
Gases at high pressure output mechanism;
The pressure regulating device being connected with described gases at high pressure output mechanism;
The fuel reserve tank being connected with described pressure regulating device, stores liquid seal medium in described fuel reserve tank;
Switching tooling, described switching tooling has a sealing cavity being connected with described fuel reserve tank, described sealing Cavity has the hatch frame matched with static seal structure to be measured, and described static seal structure to be measured passes through Described hatch frame is connected with described sealing cavity;
Described gases at high pressure output mechanism exports the gas of the first pressure, described pressure regulator to described pressure regulating device The gas that gas regulation is the second pressure of described first pressure is exported to described fuel reserve tank by structure so that described Liquid seal medium in fuel reserve tank is pressed in the annular seal space body of described switching tooling.
Wherein, described pressure regulating device includes: the first pressure regulator valve and the second tune being connected with described first pressure regulator valve Pressure valve;
Described first pressure regulator valve connects with described gases at high pressure output mechanism away from one end of described second pressure regulator valve Connecing, described second pressure regulator valve is connected with described fuel reserve tank away from one end of described first pressure regulator valve.
Wherein, the range of regulation of described first pressure regulator valve is more than the range of regulation of described second pressure regulator valve.
Wherein, the regulation precision of described second pressure regulator valve is more than the regulation precision of described first pressure regulator valve.
Wherein, described gases at high pressure output mechanism includes high-pressure nitrogen bottle.
Wherein, described liquid seal medium is water, lubricating oil, hydraulic oil, gasoline or ethanol.
Wherein, it is connected by flexible pipe and snap joint between described pressure regulating device with described fuel reserve tank.
Wherein, it is connected by flexible pipe and snap joint between described fuel reserve tank with described switching tooling.
Wherein, connected by flexible pipe and snap joint between described pressure regulating device and described gases at high pressure output mechanism Connect.
Wherein, it is connected by flexible pipe and snap joint between described first pressure regulator valve with described second pressure regulator valve.
Having the beneficial effect that of the technique scheme of the present invention:
The sealing property experimental provision of the sealing structure of the embodiment of the present invention, including: gases at high pressure output mechanism; The pressure regulating device being connected with gases at high pressure output mechanism;The fuel reserve tank being connected with pressure regulating device, storage in fuel reserve tank There is liquid seal medium;Switching tooling, switching tooling has a sealing cavity being connected with fuel reserve tank, close Envelope cavity has the hatch frame matched with static seal structure to be measured, and static seal structure to be measured is by opening Mouth structure is assembled to seal on cavity;Gases at high pressure output mechanism exports the gas of the first pressure to pressure regulating device, The gas that gas regulation is the second pressure of the first pressure is exported to fuel reserve tank by pressure regulating device so that fuel reserve tank Interior liquid seal medium is pressed in the annular seal space body of switching tooling.Close by liquid at detection hatch frame The amount of leakage of envelope medium, it is possible to accurately measure the sealing property of static seal structure.This device has can be quick Assemble, advantage with low cost and safe and reliable, it is possible to for major part static seal structure sealing property experiment Used, solve and prior art lacks the experimental provision testing static seal structure sealing property, and portion Point experiment porch that research worker oneself is built is expensive, the problem even with potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention seals the sealing property experimental provision of structure.
Description of reference numerals:
1-gases at high pressure output mechanism, 2-pressure regulating device, 21-the first air relief valve, 22-the second air relief valve, 3- Fuel reserve tank, 4-liquid seal medium, 5-switching tooling, 6-static seal structure to be measured, 61-hollow bolt, 62-pad, 63-swivel joint.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached Figure and specific embodiment are described in detail.
As it is shown in figure 1, the sealing property experimental provision of the sealing structure of the embodiment of the present invention, including:
Gases at high pressure output mechanism 1;
The pressure regulating device 2 being connected with described gases at high pressure output mechanism 1;
The fuel reserve tank 3 being connected with described pressure regulating device 2, stores liquid seal medium in described fuel reserve tank 3 4;
Switching tooling 5, described switching tooling 5 has a sealing cavity being connected with described fuel reserve tank 3, institute State sealing cavity and there is the hatch frame matched with static seal structure 6 to be measured, described static seal to be measured Structure 6 is connected with described sealing cavity by described hatch frame;
Described gases at high pressure output mechanism 1 exports the gas of the first pressure, described tune to described pressure regulating device 2 The gas that gas regulation is the second pressure of described first pressure is exported to described fuel reserve tank 3 by press mechanism 2, Liquid seal medium 4 in described fuel reserve tank 3 is pressed in the annular seal space body of described switching tooling 5.
The sealing property experimental provision of the sealing structure of the embodiment of the present invention, by liquid at detection hatch frame The amount of leakage of sealing medium 4, it is possible to accurately measure the sealing property of static seal structure.This device has can Quickly assemble, advantage with low cost and safe and reliable, it is possible to for major part static seal structure sealing property Experiment is used, and solves the experimental provision lacked in prior art the test of static seal structure sealing property, And experiment porch that some investigators oneself builds is expensive, the problem even with potential safety hazard.
Concrete, volume or the quality of leak liquid at hatch frame can be detected, observe different assembling pre- The leakage rate of the static seal structure under clamp force.
Preferably, described pressure regulating device 2 includes: the first pressure regulator valve 21 and with described first pressure regulator valve 21 The second pressure regulator valve 22 connected;
Described first pressure regulator valve 21 exports machine away from one end of described second pressure regulator valve 22 with described gases at high pressure Structure 1 connects, and described second pressure regulator valve 22 is away from one end and the described fuel reserve tank 3 of described first pressure regulator valve 21 Connect.
Now, by two pressure regulator valve mating reactions, it is possible to be precisely controlled the output of pressure.
Preferably, the range of regulation of described first pressure regulator valve 21 is more than the pressure regulation model of described second pressure regulator valve 22 Enclose.The regulation precision of described second pressure regulator valve 22 is more than the regulation precision of described first pressure regulator valve 21.
Now, two pressure regulator valves select respectively range of regulation wide and regulation precision high, it is possible to essence further Really control the output of pressure, facilitate regulation and use.
Preferably, described gases at high pressure output mechanism 1 includes high-pressure nitrogen bottle.
The pressure of general static seal structure sealing medium is less, is often below 1MPa, and high-pressure nitrogen bottle Pressure up to 15MPa, have the ability to provide enough pressure into whole experiment.Relative to air compressor For (maximum generally 0.8MPa) etc. provide the equipment of pressure, high-pressure nitrogen bottle can provide bigger model The pressure enclosed.Meanwhile, high-pressure nitrogen bottle need not the input of electric power equal energy source, is used conveniently and safely and its price Cheap, buy and aerating is convenient.
Now, by using high-pressure nitrogen bottle, it is possible to provide enough and large range of pressure for whole experiment, It is used conveniently and safely and cheap.
Concrete, described liquid seal medium 4 can be water, lubricating oil, hydraulic oil, gasoline or ethanol.
Certainly, the most by way of example only, other has and does not corrodes experiment equipment performance aforesaid liquid sealing medium Liquid seal medium can also apply to, in the present invention, illustrate the most one by one at this.
Preferably, it is connected by flexible pipe and snap joint between described pressure regulating device 2 with described fuel reserve tank 3. It is connected also by flexible pipe and snap joint between described fuel reserve tank 3 with described switching tooling 5.
Same, by flexible pipe and quick between described pressure regulating device 2 and described gases at high pressure output mechanism 1 Joint connects.Also by flexible pipe and quickly connect between described first pressure regulator valve 21 and described second pressure regulator valve 22 Head connects.
Now, quickly changed by what flexible pipe and adapter were capable of between equipment, facilitate assembling and Dismounting.
Further, owing to the device of the embodiment of the present invention is used to measure static seal structure sealing property, So need not the biggest fluid flow at static seal structure, therefore the volume of fuel reserve tank 3 need not too big, According to sealing structure slip 1e-3Ml/s calculates, and during work experiment once a length of 8 hours continuously, then connects The volume that continuous work once leaks is 0.0288L, in order to ensure being smoothed out of experiment, it is preferred that described The volume of fuel reserve tank 3 can be 1-2L.
Certainly, for different sealing leak rate requirements, bigger or less leakage rate can be produced, then need The fuel reserve tank of different size to be used, illustrates the most one by one at this.
Sealing as a example by structure by detection hollow bolt, the device of the embodiment of the present invention is as it is shown in figure 1, this device Be by through flexible pipe, snap joint connect high-pressure nitrogen bottle, first pressure regulator valve the 21, second pressure regulator valve 22, Fuel reserve tank 3, switching tooling 5 and hollow bolt seal structure composition.Fuel reserve tank 3 stores lubricating oil. Hollow bolt seals structure and includes hollow bolt 61, pad 62 and swivel joint 63.In high-pressure nitrogen bottle The high pressure nitrogen of output reduces pressure through two pressure regulator valves, and the nitrogen of stable pressure is input to fuel reserve tank 3, and warp Cross fuel reserve tank 3, the lubricating oil of high pressure is squeezed into switching tooling 5 and seals structure with hollow bolt.By measuring The volume of leak liquid or quality, it is possible to the hollow bolt under the different assembly pretightening power of observation seals structure Leakage rate.
To sum up, the sealing property experimental provision of the sealing structure of the embodiment of the present invention, by detection hatch frame The amount of leakage of place's liquid seal medium, it is possible to accurately measure the sealing property of static seal structure.Having can be fast Speed assembles, advantage with low cost and safe and reliable, it is possible to real for major part static seal structure sealing property Test and used, solve the experimental provision lacked in prior art the test of static seal structure sealing property, and The experiment porch that some investigators oneself builds is expensive, the problem even with potential safety hazard.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications, These improvements and modifications also should be regarded as protection scope of the present invention.

Claims (10)

1. the sealing property experimental provision sealing structure, it is characterised in that including:
Gases at high pressure output mechanism;
The pressure regulating device being connected with described gases at high pressure output mechanism;
The fuel reserve tank being connected with described pressure regulating device, stores liquid seal medium in described fuel reserve tank;
Switching tooling, described switching tooling has a sealing cavity being connected with described fuel reserve tank, described sealing Cavity has the hatch frame matched with static seal structure to be measured, and described static seal structure to be measured passes through Described hatch frame is connected with described sealing cavity;
Described gases at high pressure output mechanism exports the gas of the first pressure, described pressure regulator to described pressure regulating device The gas that gas regulation is the second pressure of described first pressure is exported to described fuel reserve tank by structure so that described Liquid seal medium in fuel reserve tank is pressed in the annular seal space body of described switching tooling.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that Described pressure regulating device includes: the first pressure regulator valve and the second pressure regulator valve being connected with described first pressure regulator valve;
Described first pressure regulator valve connects with described gases at high pressure output mechanism away from one end of described second pressure regulator valve Connecing, described second pressure regulator valve is connected with described fuel reserve tank away from one end of described first pressure regulator valve.
The sealing property experimental provision of sealing structure the most according to claim 2, it is characterised in that The range of regulation of described first pressure regulator valve is more than the range of regulation of described second pressure regulator valve.
The sealing property experimental provision of sealing structure the most according to claim 2, it is characterised in that The regulation precision of described second pressure regulator valve is more than the regulation precision of described first pressure regulator valve.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that Described gases at high pressure output mechanism includes high-pressure nitrogen bottle.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that Described liquid seal medium is water, lubricating oil, hydraulic oil, gasoline or ethanol.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that It is connected by flexible pipe and snap joint between described pressure regulating device with described fuel reserve tank.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that It is connected by flexible pipe and snap joint between described fuel reserve tank with described switching tooling.
The sealing property experimental provision of sealing structure the most according to claim 1, it is characterised in that It is connected by flexible pipe and snap joint between described pressure regulating device with described gases at high pressure output mechanism.
The sealing property experimental provision of sealing structure the most according to claim 2, it is characterised in that It is connected by flexible pipe and snap joint between described first pressure regulator valve with described second pressure regulator valve.
CN201610182315.1A 2016-03-28 2016-03-28 A kind of sealing performance experimental provision of sealing structure Active CN105865718B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029845A (en) * 2018-07-17 2018-12-18 内蒙古第机械集团股份有限公司 A kind of test device and test method of hollow bolt sealing performance

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US20080110245A1 (en) * 2003-10-29 2008-05-15 Gabriel Keita Methods Relating to Molding Optical Lenses
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CN104132783A (en) * 2014-08-28 2014-11-05 河南柴油机重工有限责任公司 Water pressure testing tool fast to disassemble or assemble
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029845A (en) * 2018-07-17 2018-12-18 内蒙古第机械集团股份有限公司 A kind of test device and test method of hollow bolt sealing performance

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