CN110411843A - A kind of pressure vessel or pipe test by air-pressurizing system and test method - Google Patents
A kind of pressure vessel or pipe test by air-pressurizing system and test method Download PDFInfo
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- CN110411843A CN110411843A CN201910712767.XA CN201910712767A CN110411843A CN 110411843 A CN110411843 A CN 110411843A CN 201910712767 A CN201910712767 A CN 201910712767A CN 110411843 A CN110411843 A CN 110411843A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of pressure vessel or pipe test by air-pressurizing system and test method, the system includes generating hydraulic pressure module occurs, pressure conduction module, control module, pressure conduction module includes vacuum tank, the bottom of vacuum tank is provided with the fluid pressure line of hydraulic medium input and output to vacuum tank, top is provided with the pneumatic circuit connecting with testing pressure container or pipeline and keeps the air inlet pipeline of upper chamber air pressure balance, the output end that module occurs for pressure is connect with fluid pressure line, fluid pressure line and pneumatic tube road are provided with multiple sensors, the controlled component for controlling hydraulic on-off size is additionally provided on fluid pressure line, controlled component is connected with control module respectively with sensor.Module occurs for pressure using liquid as medium, only uses gas as medium in test section, reduces equipment and technology difficulty and cost, reduce gas equivalent volume, save test period, reduce failure damage danger coefficient.
Description
Technical field
The present invention relates to the technical field more particularly to a kind of pressure vessel of pressure vessel or pipe test by air-pressurizing or pipelines
Gas pressure test system and test method.
Background technique
With the development of industry, the application of the bearing devices such as pressure vessel and pressure pipeline is all the more extensive, and equipment court
Enlargement, high parameter direction develop.It is the pressure vessel and pressure pipeline of gaseous state or gas-liquid mixed state for interior media
For equipment, once occur leaking or rupturing will lead to serious consequence, therefore it generally requires progress resistance in the design and manufacture stage
Pressure or fatigue test, verify its integral strength.Currently, for the pressure-resistant or tired of pressure vessel and pressure pipeline in national and foreign standards
Labor test is seldom to carry out pressure using gas (especially active gases) using liquid medium, such as water or hydraulic oil mostly
Test.In view of the penetrability of gas is more stronger than liquid, and the practical splendid attire medium of bearing device can during equipment is on active service
It can affect to the performance of equipment and materials (such as corrode), therefore, gas pressure test compares hydraulic test more can be from
The practical duty status of technical standpoint reaction bearing device.But gas pressure test has apparent limitation: firstly, uniform pressure parameter
In the case of, the supercharging device and its pipe valve attachment of air pressure compared to it is hydraulic costly, it is living especially for hydrogen and hydrogen sulfide etc.
Property or corrosive gas medium, the technology of supercharging device realize that difficulty is huge, with high costs；Secondly, the compressibility of gas compared with
Cause pressurization time of the same testing equipment under same pressure parameter long by force, causes the test period more obvious than hydraulic test
Increase；Again, when the volume of gas is larger, the risk that gas pressure test is destroyed is huge, in particular by active gases
When, a possibility that there are also chemical explosions, to testing crew, testing equipment and ambient enviroment bring immeasurable security risk and
Economic loss.Due to above-mentioned limitation, the pressure resistance or fatigue test of the bearing devices such as pressure vessel and piping use gas conduct
The application of pressure medium still not enough extensively, and uses liquid medium progress pressure resistance or fatigue test true occasionally there are being not enough to
The case where reflecting the actual use situation of bearing device, therefore, for the bearing devices such as pressure vessel and pressure pipeline, design is opened
Sending out one kind higher gas pressure test system and method for relatively inexpensive practical and safety coefficient seems particularly necessary.
Summary of the invention
In order to overcome the shortcomings of the prior art described above, for this purpose, the present invention provides a kind of pressure vessel or pipeline air pressure
Pilot system and test method.
The invention adopts the following technical scheme:
Including generating hydraulic pressure module, pressure conduction mould occur for a kind of pressure vessel or pipe test by air-pressurizing system
Block, control module, the pressure conduction module includes vacuum tank, the bottom of the vacuum tank be provided with hydraulic medium is inputted it is defeated
The fluid pressure line of vacuum tank is arrived out, and top is provided with the pneumatic circuit connecting with testing pressure container or pipeline and keeps upper chambers
The air inlet pipeline of body air pressure balance, the output end that module occurs for the pressure are connect with fluid pressure line, and the fluid pressure line is gentle
Pressure pipe road is provided with multiple sensors, and the controlled component for controlling hydraulic on-off size is additionally provided on the fluid pressure line,
The controlled component is connected with control module respectively with sensor.
Optimization, it is provided with inlet pipe on the side of the vacuum tank on the lower, is provided with down in the inlet pipe
Shut-off valve.
Optimization, air inlet pipeline is set on vacuum tank side against the top, is provided with and cuts on the air inlet pipeline
Only valve.
Optimization, the end that the fluid pressure line is located at below vacuum tank separates drain line, is provided in drain line
Tapping valve.
Optimization, be provided with drier, middle shut-off valve on the pneumatic circuit, pneumatic circuit respectively with pressure vessel or pipe
The pipeline be connected with atmosphere is also stretched out in road, vacuum tank junction respectively, is respectively arranged with pressure-relief valve and blow valve thereon.
Optimization, the controlled component includes the pressurization pump group being arranged on fluid pressure line by hydraulic medium flow direction, three
Four way solenoid valve is additionally provided with filter and check valve, the pressurization pump group and three position four-way electromagnetic valve on the fluid pressure line
Controlled end connect respectively with the corresponding controling end of control module.
Optimization, the sensor includes temperature sensor, hydrostatic sensor, baroceptor, the hydrostatic sensor
Fluid pressure line is separately positioned at the position of output end with the test side of temperature sensor, and baroceptor is arranged in air pressure
Pipeline is at the position of testing pressure container or pipe outlet.
Use above-mentioned pressure vessel or the test method of pipe test by air-pressurizing system, comprising the following steps:
The volume V and air pressure test pressure P of S1, foundation testing pressure container or pipeline, select suitable vacuum tank, described
The volume of vacuum tank is (15~20) PV；
S2, hydraulic medium is filled into vacuum tank, the liquid level to hydraulic medium is higher than fluid pressure line and connect with vacuum tank
Place is aboutWhen stop filling liquid, wherein A indicate vacuum tank inside cross-sectional area；
S3, the air displacement in pneumatic circuit, in vacuum tank, in testing pressure container or pipeline is situated between at the gas of setting
Matter, until the air pressure in testing pressure container or pipeline is zero, all pipes that control module control pressure pipeline is connected with atmosphere
The valve of road is closed；
S4, when using system carry out air pressure pressure test when, in control module be arranged pneumatic test pressure, boosting speed
Rate, dwell time and alarm temperature parameter；When carrying out air pressure fatigue test using system, fatigue examination is set in control module
Test pressure, frequency, cycle-index and alarm temperature parameter；
Pressurization pump group work in S5, the controlled component of control, is gradually increasing the liquid medium liquid level in vacuum tank, compresses
Gas medium in vacuum tank, and pressure is transferred in testing container or pipeline in communication, it is subjected to air pressure pressure resistance
Experiment and air pressure fatigue test；
S6, after the test opens the valve on all pipelines be connected on pneumatic circuit with atmosphere, make testing container or
Inside pipeline, the release of the pressure of vacuum tank, open the tapping valve below vacuum tank in drain line, the liquid in vacuum tank be situated between
Matter discharge is clean.
Optimization, be by opening the lower shut-off valve in inlet pipe, from inlet pipe into vacuum tank in step s 2
Input liquid medium.
The present invention has the advantages that
(1) module occurs for the pressure in the present invention using hydraulic, that is, use liquid (water or normal hydraulic oil) as
Medium is tested, and pressure conduction using gas is as test medium, and since gas compression is bigger, molecular weight is small, penetrability
By force, and certain active gases there is also risk, cause the compression difficulty of pneumatic compression devices bigger, technical requirements are higher, therefore select
A possibility that being saved a large amount of equipment cost with hydraulic equipment and component, be shortened the test period, reduce leakage, reduces peace
Full hidden danger.
(2) the pressure conduction module in the present invention can replace air pressure Jie at any time according to different gas test medium requirements
Matter, without making more change to bulk testing system, furthermore, it is only necessary to lower replacement be done to solenoid valve, gas pressure resistance can be carried out
Or fatigue test, this makes practical application of the invention more extensive and flexibility.
(3) this pilot system and method can using gas as medium to the structural member of testing pressure container or pipeline into
The pressure resistance of promoting the circulation of qi pressure or air pressure fatigue test, bearing capacity of the structural member of testing pressure container or pipeline under gas pressure and tired
Labor performance；The configuration of the present invention is simple, test result is accurate and reliable, and the pressurization pressure such as pump group and pipe valve occur module and use liquid
It as medium, only uses gas as medium in test section, reduces equipment and technology difficulty and cost, reduce gas equivalent appearance
Product, saves test period, reduces failure damage danger coefficient, and can in the case where pressure occurs module and remains unchanged,
It replaces other gas mediums to be tested, improves utilization rate of equipment and installations, saved resource, reduce costs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pilot system in the present invention.
Fig. 2 is the structural schematic diagram of each pipeline and valve on vacuum tank and vacuum tank.
The meaning of label symbol is as follows in figure:
1- water tank 2- filter 3- is pressurized pump group 4- check valve 5- three position four-way electromagnetic valve
6- fluid pressure line 7- controls route 8- temperature sensor 9- hydrostatic sensor
Shut-off valve 14- blow valve in 10- control module 11- baroceptor 12- drier 13-
15- pneumatic circuit
16- vacuum tank 161- air inlet pipeline 162- gas medium 163- liquid medium
164- inlet pipe 165- the first air pressure balance pipeline 166- the second air pressure balance pipeline
167- drain line
Shut-off valve 19- tapping valve under the upper shut-off valve 18- of 17-
21-pressure-relief valve of 20-testing containers or pipeline
Specific embodiment
Embodiment 1
As shown in Figs. 1-2, including generating hydraulic pressure mould occurs for a kind of pressure vessel or pipe test by air-pressurizing system
Block, pressure conduction module, control module 10.
The pressure conduction module includes vacuum tank 16, the bottom of the vacuum tank 16 be provided with hydraulic medium is inputted it is defeated
The fluid pressure line 6 of vacuum tank 16 is arrived out, top is provided with the pneumatic circuit 15 connecting with testing pressure container or pipeline and keeps
The air inlet pipeline 161 of upper chamber air pressure balance, the output end that module occurs for the pressure are connect with fluid pressure line 6, the liquid
It is provided with multiple sensors on pressure pipe road 6 and pneumatic circuit 15, it is big that the hydraulic on-off of control is additionally provided on the fluid pressure line 6
Small controlled component, the controlled component and sensor pass through respectively controls route 7 and the connection of control module 10 accordingly.
It is provided with inlet pipe 164 on the side of the vacuum tank 16 on the lower, is provided with down in the inlet pipe 164
Shut-off valve 18.Air inlet pipeline 161 is set on the vacuum tank 16 side against the top, is provided on the air inlet pipeline 161
Shut-off valve 17.The end that the fluid pressure line 6 is located at 16 lower section of vacuum tank separates drain line, is provided with drain in drain line
Valve 19.
Be provided with drier 12, middle shut-off valve 13 on the pneumatic circuit 15, pneumatic circuit 15 respectively with pressure vessel or
The first air pressure balance pipeline 165, the second air pressure balance pipeline be connected with atmosphere is also stretched out in pipeline, 16 junction of vacuum tank respectively
166, it is respectively arranged with pressure-relief valve 21 and blow valve 14 thereon.
The controlled component includes the pressurization pump group 3 being arranged on fluid pressure line 6 by hydraulic medium flow direction, 3-position 4-way electricity
Magnet valve 5 is additionally provided with filter 2 and check valve 4, the pressurization pump group 3 and three position four-way electromagnetic valve 5 on the fluid pressure line 6
Controlled end connect respectively with the corresponding controling end of control module 10.In this embodiment, the power that pressure occurs in module is set
The components such as standby, pipeline, valve and instrument can select hydraulic mostly, in this liquid medium 163 by taking water as an example.Fluid pressure line 6
Input terminal extend in water tank, filter 2, check valve 4, pressurization pump group 3, three position four-way electromagnetic valve 5 is along 6 liquid of fluid pressure line
Flow direction is set gradually.In the direct reflux to water tank of another output end of three position four-way electromagnetic valve 5.
The sensor includes temperature sensor 8, hydrostatic sensor 9, baroceptor 11,9 He of hydrostatic sensor
The test side of temperature sensor 8 is separately positioned on fluid pressure line 6 at the position of output end, and baroceptor 11 is arranged in gas
Pressure pipe road 15 is at the position of testing pressure container or pipe outlet.
Embodiment 2
Use pressure vessel described in embodiment 1 or the test method of pipe test by air-pressurizing system, comprising the following steps:
The volume V and air pressure test pressure P of S1, foundation testing pressure container or pipeline, select suitable vacuum tank 16, institute
The volume for stating vacuum tank 16 is (15~20) PV；
S2, hydraulic medium is filled into vacuum tank 16, the liquid level to hydraulic medium is higher than fluid pressure line 6 and vacuum tank 16
Junction liquid level isWhen stop filling liquid, wherein A indicate vacuum tank 16 inside cross-sectional area；
S3, by the air displacement in pneumatic circuit 15, in vacuum tank 16, in testing pressure container or pipeline at the gas of setting
Body medium 162, until the air pressure in testing pressure container or pipeline is zero, 10 control pressure pipeline 15 of control module and big conductance
Valve on logical all pipelines is closed；
S4, when using system carry out air pressure pressure test when, in control module 10 be arranged pneumatic test pressure, boosting speed
Rate, dwell time and alarm temperature parameter；When carrying out air pressure fatigue test using system, fatigue is set in control module 10
Test pressure, frequency, cycle-index and alarm temperature parameter；
Pressurization pump group 3 in S5, the controlled component of control works, make 163 liquid level of liquid medium in vacuum tank 16 gradually on
It rises, compresses the gas medium 162 in vacuum tank 16, and pressure is transferred in testing container or pipeline 20 in communication, make
Be subjected to air pressure pressure resistance experiment and air pressure fatigue test；
S6, after the test opens the valve on all pipelines be connected on pneumatic circuit 15 with atmosphere, makes testing container
Or inside pipeline 20, the pressure of vacuum tank 16 release, open 16 lower section drain line of vacuum tank on tapping valve 19, by vacuum tank
Liquid medium 163 in 16 discharges completely.
In step s 2, including two schemes, the first be by opening the lower shut-off valve 18 in inlet pipe 164, from
Inlet pipe 164 inputs liquid medium 163 into vacuum tank 16.In this kind of scheme, inlet pipe 164 can directly and the fire hose
Head connection facilitates operation there is no need to adjust the numerical value of pressurization pump group 3.Second scheme is to work as to be not provided with inlet pipe 164
When, can by adjust pressurization pump group 3 pressure, water is pumped into vacuum tank 16 from water tank, the program there is no need into
Liquid pipeline 164 and lower shut-off valve 18.
The above is only the preferred embodiments of the invention, are not intended to limit the invention creation, all in the present invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the invention within the spirit and principle of creation
Within the scope of shield.
Claims (9)
1. a kind of pressure vessel or pipe test by air-pressurizing system, which is characterized in that module, pressure occurs including generating hydraulic pressure
Power conducts module, control module (10), and the pressure conduction module includes vacuum tank (16), and the bottom of the vacuum tank (16) is set
It is equipped with and is provided on the fluid pressure line (6) of hydraulic medium input and output to vacuum tank (16), top and testing pressure container or pipe
Module occurs for the pneumatic circuit (15) of road connection and the air inlet pipeline (161) for keeping upper chamber air pressure balance, the pressure
Output end is connect with fluid pressure line (6), is provided with multiple sensors on the fluid pressure line (6) and pneumatic circuit (15), institute
State the controlled component for being additionally provided on fluid pressure line (6) and controlling hydraulic on-off size, the controlled component and sensor respectively and
Control module (10) connection.
2. a kind of pressure vessel according to claim 1 or pipe test by air-pressurizing system, which is characterized in that the vacuum tank
(16) it is provided on side on the lower inlet pipe (164), is provided with lower shut-off valve (18) on the inlet pipe (164).
3. a kind of pressure vessel according to claim 1 or 2 or pipe test by air-pressurizing system, which is characterized in that described steady
Air inlet pipeline (161) are set on the side for pressing tank (16) against the top, are provided with shut-off valve on the air inlet pipeline (161)
(17)。
4. a kind of pressure vessel according to claim 1 or pipe test by air-pressurizing system, which is characterized in that the hydraulic tube
The end that road (6) is located at below vacuum tank (16) separates drain line (167), and drain line is provided with tapping valve on (167)
(19)。
5. a kind of pressure vessel according to claim 1 or pipe test by air-pressurizing system, which is characterized in that the pneumatic tube
Be provided with drier (12), middle shut-off valve (13) on road (15), pneumatic circuit (15) respectively with pressure vessel or pipeline, vacuum tank
(16) pipeline be connected with atmosphere is also stretched out in junction respectively, is respectively arranged with pressure-relief valve (21) and blow valve (14) thereon.
6. a kind of pressure vessel according to claim 1 or pipe test by air-pressurizing system, which is characterized in that the controlled group
Part includes the pressurization pump group (3) being arranged on fluid pressure line (6) by hydraulic medium flow direction, three position four-way electromagnetic valve (5), the liquid
Filter (2) and check valve (4) are additionally provided on pressure pipe road (6), it is described to be pressurized pump group (3) and three position four-way electromagnetic valve (5)
Controlled end is connect with the corresponding controling end of control module (10) respectively.
7. a kind of pressure vessel according to claim 6 or pipe test by air-pressurizing system, which is characterized in that the sensor
Including temperature sensor (8), hydrostatic sensor (9), baroceptor (11), the hydrostatic sensor (9) and temperature sensor
(8) test side is separately positioned on fluid pressure line (6) at the position of output end, and baroceptor (11) is arranged in pneumatic tube
Road (15) is at the position of testing pressure container or pipe outlet.
8. special using the test method of pressure vessel or pipe test by air-pressurizing system described in claim 1-7 any one
Sign is, comprising the following steps:
The volume V and air pressure test pressure P of S1, foundation testing pressure container or pipeline, select suitable vacuum tank (16), described
The volume of vacuum tank (16) is (15~20) PV；
S2, hydraulic medium is filled into vacuum tank (16), the liquid level to hydraulic medium is higher than fluid pressure line (6) and vacuum tank
(16) junction is aboutWhen stop filling liquid, wherein A indicates vacuum tank (16) internal cross-sectional area；
S3, by the air displacement in pneumatic circuit (15), in vacuum tank (16), in testing pressure container or pipeline at the gas of setting
Body medium (162), until the air pressure in testing pressure container or pipeline is zero, control module (10) control pressure pipeline (15) with
Valve on all pipelines of atmosphere conducting is closed；
S4, when using system carry out air pressure pressure test when, on control module (10) be arranged pneumatic test pressure, boosting speed
Rate, dwell time and alarm temperature parameter；When carrying out air pressure fatigue test using system, it is arranged on control module (10) tired
Labor test pressure, frequency, cycle-index and alarm temperature parameter；
Pressurization pump group (3) work in S5, the controlled component of control makes liquid medium (163) liquid level in vacuum tank (16) gradually
Rise, the gas medium (162) in compression vacuum tank (16), and pressure is transferred to testing container or pipeline in communication
(20) in, air pressure pressure resistance experiment and air pressure fatigue test are subjected to；
S6, after the test opens the valve on all pipelines be connected on pneumatic circuit (15) with atmosphere, make testing container or
The pressure release of pipeline (20) inside, vacuum tank (16), opens the tapping valve below vacuum tank (16) in drain line (167)
(19), the liquid medium (163) in vacuum tank (16) is discharged clean.
9. test method according to claim 8, which is characterized in that be by opening inlet pipe in step s 2
(164) the lower shut-off valve (18) on, it is interior from inlet pipe (164) to vacuum tank (16) to input liquid medium (163).
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| CN201910712767.XA CN110411843B (en) | 2019-08-02 | 2019-08-02 | Pressure container or pipeline air pressure test system and test method |
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|---|---|---|---|
| CN201910712767.XA CN110411843B (en) | 2019-08-02 | 2019-08-02 | Pressure container or pipeline air pressure test system and test method |
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| CN110411843B CN110411843B (en) | 2022-07-15 |
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| CN111413053A (en) * | 2020-04-24 | 2020-07-14 | 中国铁建重工集团股份有限公司 | Shield constructs quick-witted articulated sealing test device |
| CN111982723A (en) * | 2020-07-22 | 2020-11-24 | 中联重科股份有限公司 | Pressure vessel pulse fatigue test device |
| CN113090756A (en) * | 2019-12-23 | 2021-07-09 | 深圳市发利机械设备结构有限公司 | Pressure container with buffer device for offshore oil engineering |
| CN113640127A (en) * | 2020-05-11 | 2021-11-12 | 国家能源投资集团有限责任公司 | Method for testing gas filling equipment |
| CN113776949A (en) * | 2021-08-12 | 2021-12-10 | 北京航天控制仪器研究所 | Pressure resistance testing device and method for glass bulb of atomic gas chamber |
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