CN109975128A - A kind of tubing Strength test method - Google Patents
A kind of tubing Strength test method Download PDFInfo
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- CN109975128A CN109975128A CN201910261140.7A CN201910261140A CN109975128A CN 109975128 A CN109975128 A CN 109975128A CN 201910261140 A CN201910261140 A CN 201910261140A CN 109975128 A CN109975128 A CN 109975128A
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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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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of tubing Strength test methods, belong to tubing intensity detection technical field；A kind of tubing Strength test method, pressure testing is carried out using pressure testing device, pressure testing device includes that pipeline places shell, intake pump, suction pump, hydraulic test pump, pressure gauge, hydraulic test pump is connected with one end sealing that pipeline places shell, intake pump and suction pump pass through water pipe to be connected with the other end sealing that pipeline places shell, it places shell and is equipped with testing tube sealing ring, pressure gauge is mounted on pipeline and places on shell, and is connected respectively with hydraulic test pump and pressure testing pipe；The present invention observes the residual compression of pressure testing pipe when pressure is on the rise by pressure gauge and then observing step 8 when differentiating to experimental result, then experimental result is qualified, if the residual compression of the pressure testing pipe in step 8 is without ascendant trend, at continuous observation 60-80 minutes, when the pressure decline in pressure testing pipe is no more than 0.03MPa, then hydrostatic test result is qualified, otherwise unqualified.
Description
Technical field
The present invention relates to tubing intensity detection technical field more particularly to a kind of tubing Strength test methods.
Background technique
Pipeline is connected into pipe, pipe connector and valve etc. for conveying gas, liquid or with solid particle
Fluid device.Pipeline is because of its own unique feature, extensive use and conglomerate, and multi-field, having many uses for pipeline is general,
It is used primarily in water supply, draining, heat supply, gives gas, long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various
In commercial plant.
Tubing in the actual use process because use environment is varied, in order to enable tubing in rugged environment
In remain to normally use, just need to carry out the quality of tubing harsh detection before factory, and tubing intensity detection belongs to pair
The most important ring of pipe workpiece quality control, traditional detection method detection accuracy is low, thus a kind of our tubing Strength test sides
Method improves detection efficiency and precision.
Summary of the invention
The purpose of the present invention is to solve deficiencies in the prior art, and a kind of tubing Strength test method proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of tubing Strength test method carries out pressure testing using pressure testing device, and the pressure testing device includes that pipeline places shell
Body, intake pump, suction pump, hydraulic test pump, pressure gauge, one end sealing that the hydraulic test pump and pipeline place shell are connected, it is described into
Water pump and suction pump pass through water pipe to be connected with the other end sealing that pipeline places shell, and it is close that the placement shell is equipped with testing tube
Seal, the pressure gauge is mounted on pipeline and places on shell, and is connected respectively with hydraulic test pump and pressure testing pipe.
Preferably, the pipeline places shell and is connected with sealing flange, the water close to one end of intake pump and suction pump
It manages one end far from intake pump and suction pump and is connected by sealing flange with pipeline placement shell.
Preferably, the junction of two water pipes and sealing flange is respectively connected with valve member.
Preferably, it is made of following steps:
Step 1: first by pressure testing pipe be mounted on pipeline place shell in, by pressure testing pipe and pipeline placement shell in it is each
Water distribution point is blocked；
Step 2: it is slowly filled the water after pressure testing pipe is installed by intake pump, while the air in the tube is exhausted；
Step 3: after pressure testing pipe is full of water, water tightness inspection is carried out；
Step 4: it after inspection after No leakage, is pulled water out by suction pump；
Step 5: continuing step 4, by hydraulic test pump by the near atmospheric pressure of pressure in pressure testing pipe, and continues 40-60 points
Clock；
Step 6: continue step 5 by the way that hydraulic test pump is adjusted and the pressure in pressure testing pipe is slowly boosted into 1-
1.5MPa, pressure stabilizing 40 minutes；
Step 7: continuing step 6, carries out sluicing decompression by suction pump, decompression amount is the 15-20% of experimental pressure；
Step 8: continuity step 7, the residual compression of pressure testing pipe of each 5 minutes records, totally 50 minutes.
Step 9: observation experiment data, it was therefore concluded that.
Preferably, pressure testing pipe pressure declines during step 6, can carry out water filling ftercompction by intake pump.
Preferably, stop after filling the water simultaneously pressure stabilizing 40-60 minutes.
Preferably, the pressurization gap of the hydraulic test pump cannot be less than 10min.
Preferably, after the hydraulic test pump boosts to regulation experimental pressure, pressure drop be must not exceed in pressure stabilizing 1 hour
0.1MPa。
Preferably, pressure drop must not exceed the hydraulic test pump in pressure stabilizing 2 hours under 1.2 times of states of operating pressure
0.03MPa。
Preferably, the pressure testing device further includes pedestal, the pipeline place shell, intake pump, suction pump, hydraulic test pump according to
It is secondary to be connected on pedestal.
Compared with prior art, the present invention provides a kind of tubing Strength test method, have it is following the utility model has the advantages that
1, the tubing Strength test method, by when differentiating to experimental result by step 8 observed into
And through the residual compression of pressure gauge observation pressure testing pipe when pressure is on the rise, then experimental result is qualified, if in step
The residual compression of pressure testing pipe in eight is without ascendant trend, at continuous observation 60-80 minutes, when the pressure decline in pressure testing pipe does not surpass
0.03MPa is crossed, then hydrostatic test result is qualified, otherwise unqualified.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of device for exerting used in a kind of tubing Strength test method proposed by the present invention；
Fig. 2 is the structural schematic diagram two of device for exerting used in a kind of tubing Strength test method proposed by the present invention；
In figure: 1, pedestal；2, pipeline places shell；201, pressure gauge；3, hydraulic test pump；4, intake pump；401, water pipe；5, it takes out
Water pump；6, sealing flange.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
Referring to Fig.1-2, a kind of tubing Strength test method carries out pressure testing using pressure testing device, and pressure testing device includes pipeline
Shell 2, intake pump 4, suction pump 5, hydraulic test pump 3, pressure gauge 201 are placed, one end that hydraulic test pump 3 and pipeline place shell 2 seals
It is connected, intake pump 4 and suction pump 5 are connected by water pipe 401 with the other end sealing that pipeline places shell 2, are placed shell 2 and are set
There is testing tube sealing ring, pressure gauge 201 is mounted on pipeline and places on shell 2, and is connected respectively with hydraulic test pump 3 and pressure testing pipe.
Pipeline places shell 2 and is connected with sealing flange 6 close to one end of intake pump 4 and suction pump 5, water pipe 401 far from into
Shell 2 is placed with pipeline by sealing flange 6 and is connected in one end of water pump 4 and suction pump 5.
The junction of two water pipes 401 and sealing flange 6 is respectively connected with valve member 501.
It is made of following steps:
Step 1: being mounted on pipeline for pressure testing pipe first and place in shell 2, pressure testing pipe and pipeline is placed each in shell 2
A water distribution point is blocked；
Step 2: it is slowly filled the water after pressure testing pipe is installed by intake pump 4, while the air in the tube is exhausted；
Step 3: after pressure testing pipe is full of water, water tightness inspection is carried out；
Step 4: it after inspection after No leakage, is pulled water out by suction pump 5；
Step 5: continuing step 4, by hydraulic test pump 3 by the near atmospheric pressure of pressure in pressure testing pipe, and continues 40-60 points
Clock；
Step 6: continue step 5 and slowly boosted to the pressure in pressure testing pipe by the way that hydraulic test pump 3 is adjusted
1MPa, pressure stabilizing 40 minutes；
Step 7: continuing step 6, carries out sluicing decompression by suction pump 5, decompression amount is the 15% of experimental pressure；
Step 8: continuity step 7, the residual compression of pressure testing pipe of each 5 minutes records, totally 50 minutes.
Step 9: observation experiment data, it was therefore concluded that.
Pressure testing pipe pressure declines during step 6, can carry out water filling ftercompction by intake pump 4.
Stop after filling the water simultaneously pressure stabilizing 40-60 minutes.
The pressurization gap of hydraulic test pump 3 cannot be less than 10min.
After hydraulic test pump 3 boosts to regulation experimental pressure, pressure drop must not exceed 0.1MPa in pressure stabilizing 1 hour.
Pressure drop must not exceed 0.03MPa to hydraulic test pump 3 in pressure stabilizing 2 hours under 1.2 times of states of operating pressure.
Pressure testing device further includes pedestal 1, and pipeline places shell 2, intake pump 4, suction pump 5, hydraulic test pump 3 and is connected to bottom in turn
On seat 1.
Pressure testing pipe is observed by pressure gauge 201 and then observing step 8 when differentiating to experimental result
Residual compression when pressure is on the rise, then experimental result is qualified, if the residual compression of the pressure testing pipe in step 8
Without ascendant trend, at continuous observation 60-80 minutes, it is no more than 0.03MPa when the pressure in pressure testing pipe declines, then hydrostatic test knot
Fruit is qualified, otherwise unqualified.
Embodiment 2:
Referring to Fig.1-2, a kind of tubing Strength test method carries out pressure testing using pressure testing device, and pressure testing device includes pipeline
Shell 2, intake pump 4, suction pump 5, hydraulic test pump 3, pressure gauge 201 are placed, one end that hydraulic test pump 3 and pipeline place shell 2 seals
It is connected, intake pump 4 and suction pump 5 are connected by water pipe 401 with the other end sealing that pipeline places shell 2, are placed shell 2 and are set
There is testing tube sealing ring, pressure gauge 201 is mounted on pipeline and places on shell 2, and is connected respectively with hydraulic test pump 3 and pressure testing pipe.
Pipeline places shell 2 and is connected with sealing flange 6 close to one end of intake pump 4 and suction pump 5, water pipe 401 far from into
Shell 2 is placed with pipeline by sealing flange 6 and is connected in one end of water pump 4 and suction pump 5.
The junction of two water pipes 401 and sealing flange 6 is respectively connected with valve member 501.
It is made of following steps:
Step 1: being mounted on pipeline for pressure testing pipe first and place in shell 2, pressure testing pipe and pipeline is placed each in shell 2
A water distribution point is blocked；
Step 2: it is slowly filled the water after pressure testing pipe is installed by intake pump 4, while the air in the tube is exhausted；
Step 3: after pressure testing pipe is full of water, water tightness inspection is carried out；
Step 4: it after inspection after No leakage, is pulled water out by suction pump 5；
Step 5: continuing step 4, by hydraulic test pump 3 by the near atmospheric pressure of pressure in pressure testing pipe, and continues 40-60 points
Clock；
Step 6: continue step 5 and slowly boosted to the pressure in pressure testing pipe by the way that hydraulic test pump 3 is adjusted
1-1.2MPa, pressure stabilizing 40 minutes；
Step 7: continuing step 6, carries out sluicing decompression by suction pump 5, decompression amount is the 15-20% of experimental pressure；
Step 8: continuity step 7, the residual compression of pressure testing pipe of each 5 minutes records, totally 50 minutes.
Step 9: observation experiment data, it was therefore concluded that.
Pressure testing pipe pressure declines during step 6, can carry out water filling ftercompction by intake pump 4.
Stop after filling the water simultaneously pressure stabilizing 40-60 minutes.
The pressurization gap of hydraulic test pump 3 cannot be less than 10min.
After hydraulic test pump 3 boosts to regulation experimental pressure, pressure drop must not exceed 0.1MPa in pressure stabilizing 1 hour.
Pressure drop must not exceed 0.03MPa to hydraulic test pump 3 in pressure stabilizing 2 hours under 1.2 times of states of operating pressure.
Pressure testing device further includes pedestal 1, and pipeline places shell 2, intake pump 4, suction pump 5, hydraulic test pump 3 and is connected to bottom in turn
On seat 1.
Pressure testing pipe is observed by pressure gauge 201 and then observing step 8 when differentiating to experimental result
Residual compression when pressure is on the rise, then experimental result is qualified, if the residual compression of the pressure testing pipe in step 8
Without ascendant trend, at continuous observation 60-80 minutes, it is no more than 0.03MPa when the pressure in pressure testing pipe declines, then hydrostatic test knot
Fruit is qualified, otherwise unqualified.
Embodiment 3:
Referring to Fig.1-2, a kind of tubing Strength test method carries out pressure testing using pressure testing device, and pressure testing device includes pipeline
Shell 2, intake pump 4, suction pump 5, hydraulic test pump 3, pressure gauge 201 are placed, one end that hydraulic test pump 3 and pipeline place shell 2 seals
It is connected, intake pump 4 and suction pump 5 are connected by water pipe 401 with the other end sealing that pipeline places shell 2, are placed shell 2 and are set
There is testing tube sealing ring, pressure gauge 201 is mounted on pipeline and places on shell 2, and is connected respectively with hydraulic test pump 3 and pressure testing pipe.
Pipeline places shell 2 and is connected with sealing flange 6 close to one end of intake pump 4 and suction pump 5, water pipe 401 far from into
Shell 2 is placed with pipeline by sealing flange 6 and is connected in one end of water pump 4 and suction pump 5.
The junction of two water pipes 401 and sealing flange 6 is respectively connected with valve member 501.
It is made of following steps:
Step 1: being mounted on pipeline for pressure testing pipe first and place in shell 2, pressure testing pipe and pipeline is placed each in shell 2
A water distribution point is blocked；
Step 2: it is slowly filled the water after pressure testing pipe is installed by intake pump 4, while the air in the tube is exhausted；
Step 3: after pressure testing pipe is full of water, water tightness inspection is carried out；
Step 4: it after inspection after No leakage, is pulled water out by suction pump 5；
Step 5: continuing step 4, by hydraulic test pump 3 by the near atmospheric pressure of pressure in pressure testing pipe, and continues 40-60 points
Clock；
Step 6: continue step 5 and slowly boosted to the pressure in pressure testing pipe by the way that hydraulic test pump 3 is adjusted
1.5MPa, pressure stabilizing 40 minutes；
Step 7: continuing step 6, carries out sluicing decompression by suction pump 5, decompression amount is the 15-20% of experimental pressure；
Step 8: continuity step 7, the residual compression of pressure testing pipe of each 5 minutes records, totally 50 minutes.
Step 9: observation experiment data, it was therefore concluded that.
Pressure testing pipe pressure declines during step 6, can carry out water filling ftercompction by intake pump 4.
Stop after filling the water simultaneously pressure stabilizing 40-60 minutes.
The pressurization gap of hydraulic test pump 3 cannot be less than 10min.
After hydraulic test pump 3 boosts to regulation experimental pressure, pressure drop must not exceed 0.1MPa in pressure stabilizing 1 hour.
Pressure drop must not exceed 0.03MPa to hydraulic test pump 3 in pressure stabilizing 2 hours under 1.2 times of states of operating pressure.
Pressure testing device further includes pedestal 1, and pipeline places shell 2, intake pump 4, suction pump 5, hydraulic test pump 3 and is connected to bottom in turn
On seat 1.
Pressure testing pipe is observed by pressure gauge 201 and then observing step 8 when differentiating to experimental result
Residual compression when pressure is on the rise, then experimental result is qualified, if the residual compression of the pressure testing pipe in step 8
Without ascendant trend, at continuous observation 60-80 minutes, it is no more than 0.03MPa when the pressure in pressure testing pipe declines, then hydrostatic test knot
Fruit is qualified, otherwise unqualified.
Experimental record table is as follows:
| Minute/min | Pressure value 1MPa | Pressure value 1.2MPa | Pressure value 1.5MPa |
| 5min | 0.17 | 0.2 | 0.2 |
| 10min | 0.18 | 0.197 | 0.23 |
| 15min | 0.2 | 0.2 | 0.22 |
| 20min | 0.22 | 0.198 | 0.22 |
| 25min | 0.23 | 0.198 | 0.21 |
| 30min | 0.25 | 0.2 | 0.2 |
| 35min | 0.25 | 0.2 | 0.21 |
| 40min | 0.26 | 0.198 | 0.22 |
| 45min | 0.25 | 0.199 | 0.23 |
| 50min | 0.255 | 0.2 | 0.22 |
By above-mentioned table as it can be seen that the method is suitable for the pressure detecting to pipeline, and precision and efficiency of detecting has been accomplished comprehensively
It is promoted.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of tubing Strength test method carries out pressure testing using pressure testing device, the pressure testing device includes that pipeline places shell
(2), intake pump (4), suction pump (5), hydraulic test pump (3), pressure gauge (201), which is characterized in that the hydraulic test pump (3) and pipeline
One end sealing for placing shell (2) is connected, and the intake pump (4) and suction pump (5) place shell by water pipe (401) and pipeline
The other end sealing of body (2) is connected, and the placement shell (2) is equipped with testing tube sealing ring, and the pressure gauge (201) is mounted on pipe
Road is placed on shell (2), and is connected respectively with hydraulic test pump (3) and pressure testing pipe.
2. a kind of tubing Strength test method according to claim 1, which is characterized in that the pipeline places shell (2)
One end close to intake pump (4) and suction pump (5) is connected with sealing flange (6), the water pipe (401) separate intake pump (4) and
Shell (2) are placed with pipeline by sealing flange (6) and are connected in one end of suction pump (5).
3. a kind of tubing Strength test method according to claim 2, which is characterized in that two water pipes (401) with
The junction of sealing flange (6) is respectively connected with valve member (501).
4. a kind of tubing Strength test method according to claim 3, which is characterized in that using following steps system
Make:
Step 1: being mounted on pipeline for pressure testing pipe first and place in shell (2), pressure testing pipe and pipeline is placed each in shell (2)
A water distribution point is blocked；
Step 2: it is slowly filled the water after pressure testing pipe is installed by intake pump (4), while the air in the tube is exhausted；
Step 3: after pressure testing pipe is full of water, water tightness inspection is carried out；
Step 4: it after inspection after No leakage, is pulled water out by suction pump (5)；
Step 5: continuing step 4, by hydraulic test pump (3) by the near atmospheric pressure of pressure in pressure testing pipe, and continues 40-60 points
Clock；
Step 6: continue step 5 by the way that hydraulic test pump (3) is adjusted and the pressure in pressure testing pipe is slowly boosted into 1-
1.5MPa, pressure stabilizing 40 minutes；
Step 7: continuing step 6, carries out sluicing decompression by suction pump (5), decompression amount is the 15-20% of experimental pressure；
Step 8: continuity step 7, the residual compression of pressure testing pipe of each 5 minutes records, totally 50 minutes.
Step 9: observation experiment data, it was therefore concluded that.
5. a kind of tubing Strength test method according to claim 4, which is characterized in that the pressure testing pipe pressure during step 6
Power decline, can carry out water filling ftercompction by intake pump (4).
6. a kind of tubing Strength test method according to claim 5, which is characterized in that stop water filling after and pressure stabilizing 40-
60 minutes.
7. a kind of tubing Strength test method according to claim 4, which is characterized in that the pressurization of the hydraulic test pump (3)
Gap cannot be less than 10min.
8. a kind of tubing Strength test method according to claim 7, which is characterized in that the hydraulic test pump (3) boosts to
After providing experimental pressure, pressure drop must not exceed 0.1MPa in pressure stabilizing 1 hour.
9. a kind of tubing Strength test method according to claim 8, which is characterized in that the hydraulic test pump (3) is working
Pressure drop must not exceed 0.03MPa in pressure stabilizing 2 hours under 1.2 times of states of pressure.
10. a kind of tubing Strength test method according to claim 1, which is characterized in that the pressure testing device further includes
Pedestal (1), pipeline placement shell (2), intake pump (4), suction pump (5), hydraulic test pump (3) are connected in turn on pedestal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261140.7A CN109975128A (en) | 2019-04-02 | 2019-04-02 | A kind of tubing Strength test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261140.7A CN109975128A (en) | 2019-04-02 | 2019-04-02 | A kind of tubing Strength test method |
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| Publication Number | Publication Date |
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| CN109975128A true CN109975128A (en) | 2019-07-05 |
Family
ID=67082327
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| CN201910261140.7A Withdrawn CN109975128A (en) | 2019-04-02 | 2019-04-02 | A kind of tubing Strength test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243693A (en) * | 2019-07-09 | 2019-09-17 | 张大练 | A kind of pipeline strength detection device of pressure vessel |
| CN114324108A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Internally-inserted pipeline gas permeation detection device and operation method |
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| CN109163850A (en) * | 2018-09-21 | 2019-01-08 | 江苏金门能源装备有限公司 | A kind of heat exchange pipe head pressure testing device and its pressure-measuring method |
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2019
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| CN2630835Y (en) * | 2003-06-30 | 2004-08-04 | 卢灿彬 | Large-diameter steel pipe water pressure testing device |
| CN103091174A (en) * | 2013-01-17 | 2013-05-08 | 唐山三友化工股份有限公司 | Method for testing pressure of large-diameter extra-long PE pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243693A (en) * | 2019-07-09 | 2019-09-17 | 张大练 | A kind of pipeline strength detection device of pressure vessel |
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| CN114324108A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Internally-inserted pipeline gas permeation detection device and operation method |
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Application publication date: 20190705 |