CN105628505A - Welded-seam pressure test device and application method thereof - Google Patents
Welded-seam pressure test device and application method thereof Download PDFInfo
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- CN105628505A CN105628505A CN201510995994.XA CN201510995994A CN105628505A CN 105628505 A CN105628505 A CN 105628505A CN 201510995994 A CN201510995994 A CN 201510995994A CN 105628505 A CN105628505 A CN 105628505A
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- 238000012360 testing method Methods 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 abstract 1
- 238000005457 optimization Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a welded-seam pressure test device and an application method thereof. The welded-seam pressure test device comprises a body piece, a hydraulic assembly arranged inside the body piece, two rubber seal rings arranged on the body piece in a sleeving mode and a pressure test tube assembly arranged on the body piece. The two rubber seal rings are arranged in a spaced mode. The hydraulic assembly comprises a cylinder, a piston rod and hydraulic oil arranged in the cylinder; the cylinder is connected to an external-connection hydraulic pump through a first tube; one end of the piston rod is arranged in the cylinder, and the other end of the piston rod extends out of the body piece and can reciprocate in the cylinder; the hydraulic assembly is fixedly installed inside the body piece through pressing flanges arranged on the two sides of the hydraulic assembly; the pressure test tube assembly is communicated with the inside of the body piece, and comprises a pressure test hole and a decompression hole formed in the body piece. The welded-seam pressure test device has the advantages that the structure is simple, design is reasonable, the performance is safe and reliable, the detection period is short, operation is convenient, the detection accuracy is high, and detection cost is effectively saved; good applicability is achieved.
Description
Technical field
The present invention relates to welding quality inspection technical field, particularly relate to a kind of weld seam pressure testing device and using method thereof, the commissure of pipeline flange, pipe fitting etc. can be carried out pressure testing detection by this pressure testing device, to guarantee welding quality.
Background technology
For the weld seam occurred in pipeline, the use of pipeline entirety is had important impact by the quality of its welding quality, thus for the pipeline of special purpose, it is necessary to weld seam is carried out strict detection to prevent leaving potential safety hazard; Weld inspection method of the prior art common are non-destructive test(ing)(NDT), the water test or pneumatic testing, but adopts above-mentioned detection method to there is complicated operation, testing cost costliness, sense cycle length, need professional to carry out the defects such as operation. Thus the weld seam pressure testing/detecting device studying a kind of structure simple, reasonable in design, easy to detect has important Research Significance.
Summary of the invention
Above-mentioned deficiency is there is for detection device in prior art, it is an object of the invention to: a kind of weld seam pressure testing device and using method thereof are provided, it has that structure is simple, reasonable in design, performance safety is reliable, sense cycle is short, easy to operate, accuracy of detection height, effectively save the advantages such as testing cost, has good suitability.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of weld seam pressure testing device, this weld seam pressure testing device comprises main component, be arranged on the hydraulic pressure assembly of main component inside, two rubber seal being set on main component and the pressure testing pipe assembly being arranged on main component; Wherein: described two rubber seal intervals are arranged; The hydraulic efficiency oil that this hydraulic pressure assembly comprises cylinder body, piston rod and is arranged in cylinder body; This cylinder body is connected to external hydro-pump by the first pipe fitting; One end of piston rod is arranged in cylinder body, outside the other end stretches out main component and can to-and-fro movement in cylinder body; By being arranged on the compression flange of hydraulic pressure assembly both sides, hydraulic pressure assembly is fixedly mounted on body interior; Pressure testing pipe assembly is connected with main component inside, and pressure testing pipe assembly comprises the pressure testing hole and relief hole being arranged on main component, this pressure testing hole and relief hole respectively pressure testing valve and pressure release valve by being arranged on the 2nd pipe fitting be connected to external test pump.
As the further optimization of technique scheme, described 2nd pipe fitting comprises pressure testing pipe and relief tube, is wherein provided with three-way component on pressure testing pipe, and this three-way component is connected with pressure testing pipe with pressure testing valve, tensimeter respectively.
As the further optimization of technique scheme, described 2nd pipe fitting comprises pressure testing pipe and relief tube, is wherein provided with pressure transmitter on pressure testing pipe, and this pressure transmitter is connected with external controller data signal, external controller and pressure testing valve control linkage; This external controller comprises display equipment assembly, storing device assembly, input unit assembly, PLC control unit, compares unit, pressure prewarning unit; This PLC control unit respectively by data line and display equipment assembly, storing device assembly, input unit assembly, compare unit, pressure prewarning unit control linkage; Input unit is also connected with test pump signal; Relatively unit is compared with the pressure preset being arranged in storing device assembly by the pressure testing pipe pressure value detected by pressure transmitter, and comparative result is sent to PLC control unit; PLC control unit controls energising or the disconnection of pressure testing valve according to comparative result, and control pressure prewarning unit sends early warning sound.
As the further optimization of technique scheme, described external test pump is air pump or hydro-pump.
As the further optimization of technique scheme, each rubber seal is all fixed on the outer wall being arranged on main component with gear ring by being arranged on the snap ring of rubber seal both sides.
As the further optimization of technique scheme, the spacing of two rubber seal is at least greater than weld width; The both sides of main component are also provided with roll wheel assembly.
As the further optimization of technique scheme, the first pipe fitting and the 2nd pipe fitting are provided with pipe fitting X-over; First pipe fitting is also provided with rapid-acting coupling.
The using method of the above-mentioned weld seam pressure testing device of the present invention comprises the steps:
1), when there are medicine skin or splash the preparatory stage: check weld face to be measured, it should weld face is carried out grinding process for weld seam both sides; The detection position that weld seam pressure testing device is arranged on pipeline to be measured, and guarantee that weld seam to be measured is between two rubber seal;
2) in the pressure testing stage: start the external hydro-pump being arranged on the first pipe fitting to injection liquid force feed in the cylinder body of hydraulic pressure assembly, piston rod makes rubber seal receive extruding distortion, weld seam both sides sealing the most at last under the effect of hydraulic efficiency oil; After to be sealed, start the external test pump being arranged on the 2nd pipe fitting and open pressure testing valve, pressurize in pressure testing hole, in pressure process, should bear, according to weld seam, the pressure testing value that maximal force controls external test pump, avoid pressure testing value to exceed weld seam and bear maximal force; Weldquality is judged according to pressure testing hole pressure changing;
3) stop phase: after end to be detected, closes pressure testing valve and stops pressurizeing in pressure testing hole, open relief valve and carry out release, when rubber seal returns to original shape, take out weld seam pressure testing device.
As the further optimization of technique scheme, also comprising whether detection rubber seal has slight crack, should change if having slight crack; Whether the hydraulic pressure component pipeline of detection main component inside has blocking or leakage of oil, if occurring, blocking or leakage of oil should carry out dredging and changing in time.
As the further optimization of technique scheme, the outside surface being also included in two rubber seal is evenly coated with lubricating oil.
Compared with detection device of the prior art, the weld seam pressure testing device of the present invention and using method tool thereof is adopted to have the following advantages:
(1) structure is simple, reasonable in design, the mode of hydraulic pressure is adopted to be pressurizeed by pressure test plug, it has by power more even, and pressure is easy to control more in pressure process, the simultaneously design of roll wheel assembly can reduce pressure test plug and the frictional force of pipeline inwall, it is to increase the work-ing life of pressure test plug.
(2) easy for installation, easy and simple to handle; After device is installed by operator, only need to manipulate hydraulic efficiency system and carry out pressurizeing, while can Real Time Observation pressure changing, accuracy of detection is relatively high.
(3) testing cost effectively reduces, and later maintenance cost also decreases simultaneously, has good economic benefit.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of weld seam pressure testing device of the present invention.
Accompanying drawing 2 is the schematic cross-section of weld seam pressure testing device of the present invention when installing and using.
Embodiment
Below in conjunction with accompanying drawing 1-2, the structure of weld seam pressure testing device of the present invention and using method thereof are described in detail.
A kind of weld seam pressure testing device, this weld seam pressure testing device comprises main component 1, be arranged on the hydraulic pressure assembly of main component inside, two rubber seal 2,3 being set on main component and the pressure testing pipe assembly being arranged on main component; Wherein: described two rubber seal intervals are arranged; The hydraulic efficiency oil that this hydraulic pressure assembly comprises cylinder body 4, piston rod 5 and is arranged in cylinder body; This cylinder body is connected to external hydro-pump 7 by the first pipe fitting 6; One end of piston rod is arranged in cylinder body, outside the other end stretches out main component and can to-and-fro movement in cylinder body; By being arranged on the compression flange 8,9 of hydraulic pressure assembly both sides, hydraulic pressure assembly is fixedly mounted on body interior; Pressure testing pipe assembly is connected with main component inside, pressure testing pipe assembly comprises the pressure testing hole 10 and relief hole 11 being arranged on main component, this pressure testing hole and relief hole respectively pressure testing valve 13 and pressure release valve 14 by being arranged on the 2nd pipe fitting 12 be connected to external test pump 15. Described 2nd pipe fitting comprises pressure testing pipe and relief tube, is wherein provided with three-way component on pressure testing pipe, and this three-way component is connected with pressure testing pipe with pressure testing valve, tensimeter respectively. Described 2nd pipe fitting comprises pressure testing pipe and relief tube, is wherein provided with pressure transmitter on pressure testing pipe, and this pressure transmitter is connected with external controller data signal, external controller and pressure testing valve control linkage; This external controller comprises display equipment assembly, storing device assembly, input unit assembly, PLC control unit, compares unit, pressure prewarning unit; This PLC control unit respectively by data line and display equipment assembly, storing device assembly, input unit assembly, compare unit, pressure prewarning unit control linkage; Input unit is also connected with test pump signal; Relatively unit is compared with the pressure preset being arranged in storing device assembly by the pressure testing pipe pressure value detected by pressure transmitter, and comparative result is sent to PLC control unit; PLC control unit controls energising or the disconnection of pressure testing valve according to comparative result, and control pressure prewarning unit sends early warning sound. Described external test pump is air pump or hydro-pump. Each rubber seal is all fixed on the outer wall being arranged on main component with gear ring 17 by being arranged on the snap ring 16 of rubber seal both sides. The spacing of two rubber seal is at least greater than weld width; The both sides of main component are also provided with roll wheel assembly 18. First pipe fitting and the 2nd pipe fitting are provided with pipe fitting X-over 19; First pipe fitting is also provided with rapid-acting coupling 20.
The using method of the above-mentioned a kind of weld seam pressure testing device of the present invention comprises the steps:
1), when there are medicine skin or splash the preparatory stage: check weld face to be measured, it should weld face is carried out grinding process for weld seam both sides; The detection position that weld seam pressure testing device is arranged on pipeline to be measured, and guarantee that weld seam to be measured is between two rubber seal;
2) in the pressure testing stage: start the external hydro-pump being arranged on the first pipe fitting to injection liquid force feed in the cylinder body of hydraulic pressure assembly, piston rod makes rubber seal receive extruding distortion, weld seam both sides sealing the most at last under the effect of hydraulic efficiency oil; After to be sealed, start the external test pump being arranged on the 2nd pipe fitting and open pressure testing valve, pressurize in pressure testing hole, in pressure process, should bear, according to weld seam, the pressure testing value that maximal force controls external test pump, avoid pressure testing value to exceed weld seam and bear maximal force; Weldquality is judged according to pressure testing hole pressure changing;
3) stop phase: after end to be detected, closes pressure testing valve and stops pressurizeing in pressure testing hole, open relief valve and carry out release, when rubber seal returns to original shape, take out weld seam pressure testing device.
In step 1) in, also comprising whether detection rubber seal has slight crack, should change if having slight crack; Whether the hydraulic pressure component pipeline of detection main component inside has blocking or leakage of oil, if occurring, blocking or leakage of oil should carry out dredging and changing in time. In step 1) in, the outside surface being also included in two rubber seal is evenly coated with lubricating oil.
The above-mentioned description to embodiment can understand and apply the invention for ease of those skilled in the art. These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein are applied in other embodiments and need not pass through creative work. Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to the announcement of the present invention, do not depart from improvement that category of the present invention makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a weld seam pressure testing device, it is characterised in that: this weld seam pressure testing device comprises main component 1, be arranged on the hydraulic pressure assembly of main component inside, two rubber seal 2,3 being set on main component and the pressure testing pipe assembly being arranged on main component; Wherein: described two rubber seal intervals are arranged; The hydraulic efficiency oil that this hydraulic pressure assembly comprises cylinder body 4, piston rod 5 and is arranged in cylinder body; This cylinder body is connected to external hydro-pump 7 by the first pipe fitting 6; One end of piston rod is arranged in cylinder body, outside the other end stretches out main component and can to-and-fro movement in cylinder body; By being arranged on the compression flange 8,9 of hydraulic pressure assembly both sides, hydraulic pressure assembly is fixedly mounted on body interior; Pressure testing pipe assembly is connected with main component inside, pressure testing pipe assembly comprises the pressure testing hole 10 and relief hole 11 being arranged on main component, this pressure testing hole and relief hole respectively pressure testing valve 13 and pressure release valve 14 by being arranged on the 2nd pipe fitting 12 be connected to external test pump 15.
2. a kind of weld seam pressure testing device according to claim 1, it is characterised in that: described 2nd pipe fitting comprises pressure testing pipe and relief tube, is wherein provided with three-way component on pressure testing pipe, and this three-way component is connected with pressure testing pipe with pressure testing valve, tensimeter respectively.
3. a kind of weld seam pressure testing device according to claim 1, it is characterized in that: described 2nd pipe fitting comprises pressure testing pipe and relief tube, wherein being provided with pressure transmitter on pressure testing pipe, this pressure transmitter is connected with external controller data signal, external controller and pressure testing valve control linkage; This external controller comprises display equipment assembly, storing device assembly, input unit assembly, PLC control unit, compares unit, pressure prewarning unit; This PLC control unit respectively by data line and display equipment assembly, storing device assembly, input unit assembly, compare unit, pressure prewarning unit control linkage; Input unit is also connected with test pump signal; Relatively unit is compared with the pressure preset being arranged in storing device assembly by the pressure testing pipe pressure value detected by pressure transmitter, and comparative result is sent to PLC control unit; PLC control unit controls energising or the disconnection of pressure testing valve according to comparative result, and control pressure prewarning unit sends early warning sound.
4. a kind of weld seam pressure testing device according to any one of claim 1-3, it is characterised in that: described external test pump is air pump or hydro-pump.
5. a kind of weld seam pressure testing device according to claim 1, it is characterised in that: each rubber seal is all fixed on the outer wall being arranged on main component with gear ring 17 by being arranged on the snap ring 16 of rubber seal both sides.
6. a kind of weld seam pressure testing device according to claim 1, it is characterised in that: the spacing of two rubber seal is at least greater than weld width; The both sides of main component are also provided with roll wheel assembly 18.
7. a kind of weld seam pressure testing device according to claim 1, it is characterised in that: the first pipe fitting and the 2nd pipe fitting are provided with pipe fitting X-over 19; First pipe fitting is also provided with rapid-acting coupling 20.
8. the using method of an a kind of weld seam pressure testing device according to any one of claim 1-7, it is characterised in that, this using method comprises the steps:
1), when there are medicine skin or splash the preparatory stage: check weld face to be measured, it should weld face is carried out grinding process for weld seam both sides; The detection position that weld seam pressure testing device is arranged on pipeline to be measured, and guarantee that weld seam to be measured is between two rubber seal;
2) in the pressure testing stage: start the external hydro-pump being arranged on the first pipe fitting to injection liquid force feed in the cylinder body of hydraulic pressure assembly, piston rod makes rubber seal receive extruding distortion, weld seam both sides sealing the most at last under the effect of hydraulic efficiency oil; After to be sealed, start the external test pump being arranged on the 2nd pipe fitting and open pressure testing valve, pressurize in pressure testing hole, in pressure process, should bear, according to weld seam, the pressure testing value that maximal force controls external test pump, avoid pressure testing value to exceed weld seam and bear maximal force; Weldquality is judged according to pressure testing hole pressure changing;
3) stop phase; After end to be detected, close pressure testing valve and stop pressurizeing in pressure testing hole, open relief valve and carry out release, when rubber seal returns to original shape, take out weld seam pressure testing device.
9. using method according to claim 8, it is characterised in that: in step 1) in, also comprising whether detection rubber seal has slight crack, should change if having slight crack; Whether the hydraulic pressure component pipeline of detection main component inside has blocking or leakage of oil, if occurring, blocking or leakage of oil should carry out dredging and changing in time.
10. using method according to claim 9, it is characterised in that: in step 1) in, the outside surface being also included in two rubber seal is evenly coated with lubricating oil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995994.XA CN105628505B (en) | 2015-12-29 | 2015-12-29 | A kind of weld seam pressure testing device and its application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510995994.XA CN105628505B (en) | 2015-12-29 | 2015-12-29 | A kind of weld seam pressure testing device and its application method |
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| CN105628505A true CN105628505A (en) | 2016-06-01 |
| CN105628505B CN105628505B (en) | 2018-11-09 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2446743A1 (en) * | 1974-09-12 | 1976-04-08 | Hans Braun | Tube testing device by pressure - uses hydraulic pressure to test strength and tightness of welded seams and of tubes themselves |
| US4178020A (en) * | 1977-12-15 | 1979-12-11 | Big-Inch Marine Systems, Inc. | Locking slip joint and method of use |
| CN1165407A (en) * | 1995-12-18 | 1997-11-19 | 精工爱普生株式会社 | Power generation method, power generation device and electronic equipment using piezoelectric body |
| CN202066751U (en) * | 2011-01-25 | 2011-12-07 | 中国石油大学(北京) | Pressure testing device for flange weld joints |
| CN203628136U (en) * | 2013-12-18 | 2014-06-04 | 天津绿清管道科技股份有限公司 | Pipe fitting pressure testing device |
| CN103912758A (en) * | 2014-04-22 | 2014-07-09 | 钊田 | High-performance online pipeline plugging device and plugging method thereof |
| CN104930296A (en) * | 2015-06-12 | 2015-09-23 | 美钻能源科技(上海)有限公司 | Hydraulic bidirectional pipe sealing device |
| CN205449686U (en) * | 2015-12-29 | 2016-08-10 | 周庆涛 | Welding seam pressure testing device |
-
2015
- 2015-12-29 CN CN201510995994.XA patent/CN105628505B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2446743A1 (en) * | 1974-09-12 | 1976-04-08 | Hans Braun | Tube testing device by pressure - uses hydraulic pressure to test strength and tightness of welded seams and of tubes themselves |
| US4178020A (en) * | 1977-12-15 | 1979-12-11 | Big-Inch Marine Systems, Inc. | Locking slip joint and method of use |
| CN1165407A (en) * | 1995-12-18 | 1997-11-19 | 精工爱普生株式会社 | Power generation method, power generation device and electronic equipment using piezoelectric body |
| CN202066751U (en) * | 2011-01-25 | 2011-12-07 | 中国石油大学(北京) | Pressure testing device for flange weld joints |
| CN203628136U (en) * | 2013-12-18 | 2014-06-04 | 天津绿清管道科技股份有限公司 | Pipe fitting pressure testing device |
| CN103912758A (en) * | 2014-04-22 | 2014-07-09 | 钊田 | High-performance online pipeline plugging device and plugging method thereof |
| CN104930296A (en) * | 2015-06-12 | 2015-09-23 | 美钻能源科技(上海)有限公司 | Hydraulic bidirectional pipe sealing device |
| CN205449686U (en) * | 2015-12-29 | 2016-08-10 | 周庆涛 | Welding seam pressure testing device |
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| CN105628505B (en) | 2018-11-09 |
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