CN105628505B - A kind of weld seam pressure testing device and its application method - Google Patents
A kind of weld seam pressure testing device and its application method Download PDFInfo
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- CN105628505B CN105628505B CN201510995994.XA CN201510995994A CN105628505B CN 105628505 B CN105628505 B CN 105628505B CN 201510995994 A CN201510995994 A CN 201510995994A CN 105628505 B CN105628505 B CN 105628505B
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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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Abstract
The present invention relates to a kind of weld seam pressure testing device and its application methods, including main component, the hydraulic package being arranged inside main component, two rubber seal being set on main component and the pressure testing tube assembly being arranged on main component；Described two rubber seal interval settings；The hydraulic package includes cylinder body, piston rod and the hydraulic oil being arranged in cylinder body；The cylinder body is connected to external hydraulic pump by the first pipe fitting；One end of piston rod is arranged in cylinder body, and the other end is stretched out outside main component and can be moved back and forth in cylinder body；By the way that the supported flange in hydraulic package both sides is arranged, hydraulic package is fixedly mounted on body interior；It is connected inside pressure testing tube assembly and main component, pressure testing tube assembly includes the pressure testing hole being mounted on main component and relief hole.It has many advantages, such as that simple structure and reasonable design, performance safety are reliable, detection cycle is short, easy to operate, accuracy of detection is high, effective saving testing cost, has preferable applicability.
Description
Technical field
The present invention relates to welding quality inspection technical field more particularly to a kind of weld seam pressure testing device and its application method,
The pressure testing device can carry out pressure testing detection to the commissure of underwater flange, pipe fitting etc., to ensure welding quality.
Background technology
For the weld seam occurred in pipeline, the quality of welding quality has important shadow to the use of pipeline entirety
It rings, thus for the pipeline of specific use, needs to carry out stringent detection to weld seam to prevent from leaving security risk；Existing skill
Weld inspection method in art common are nondestructive inspection, the water pressure test or gas pressure test, however use above-mentioned detection method
There is complicated for operation, testing cost is expensive, detection cycle is long, need professional to operate the defects of.Thus research one
Kind simple structure and reasonable design, weld seam pressure testing/detecting device easy to detect have important research significance.
Invention content
For detection device in the prior art there are above-mentioned deficiency, it is an object of the invention to：A kind of weld seam is provided
Pressure testing device and its application method, with simple structure and reasonable design, performance safety is reliable, detection cycle is short, operation side
Just, accuracy of detection is high, effectively saves the advantages that testing cost, has preferable applicability.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of weld seam pressure testing device, which includes main component, the hydraulic package that is arranged inside main component,
Two rubber seal being set on main component and the pressure testing tube assembly being arranged on main component；Wherein：Described two rubber
Sealing ring interval is arranged；The hydraulic package includes cylinder body, piston rod and the hydraulic oil being arranged in cylinder body；The cylinder body passes through first
Pipe fitting is connected to external hydraulic pump；One end of piston rod is arranged in cylinder body, and the other end stretches out main component outside and can be in cylinder body
It moves back and forth；By the way that the supported flange in hydraulic package both sides is arranged, hydraulic package is fixedly mounted on body interior；Pressure testing pipe
It is connected inside component and main component, pressure testing tube assembly includes the pressure testing hole being mounted on main component and relief hole, the pressure testing hole
With relief hole external hydraulic test pump is connected to by the way that the pressure-testing valve on the second pipe fitting and relief valve is arranged respectively.
As advanced optimizing for above-mentioned technical proposal, second pipe fitting includes pressure testing pipe and relief tube, wherein pressure testing
It is provided with three-way component on pipe, is connected respectively with pressure-testing valve, pressure gauge and pressure testing pipe on the three-way component.
As advanced optimizing for above-mentioned technical proposal, second pipe fitting includes pressure testing pipe and relief tube, wherein pressure testing
Pressure sensor is provided on pipe, which connect with external controller data-signal, external controller and pressure-testing valve
Control connection；The external controller include display apparatus assembly, storage device component, input equipment component, PLC control unit,
Comparing unit, pressure prewarning unit；The PLC control unit respectively by data line with display apparatus assembly, storage device component,
Input equipment component, comparing unit, the control connection of pressure prewarning unit；Input equipment is also connect with pressure testing pump signal；Compare list
Member is compared by the pressure testing pipe pressure value for detecting pressure sensor with the pressure preset being arranged in storage device component
Compared with, and comparison result is sent to PLC control unit；PLC control unit according to comparison result control pressure-testing valve energization or
It disconnects and control pressure prewarning unit sends out early warning sound.
As advanced optimizing for above-mentioned technical proposal, the external hydraulic test pump is air pump or hydraulic pump.
As advanced optimizing for above-mentioned technical proposal, each rubber seal is by being arranged in rubber seal both sides
Snap ring and baffle ring be fixed and be arranged on the outer wall of main component.
As advanced optimizing for above-mentioned technical proposal, the spacing of two rubber seal is at least more than weld width；It is main
It is additionally provided with roll wheel assembly on the both sides of body part.
As advanced optimizing for above-mentioned technical proposal, it is both provided with pipe fitting conversion on the first pipe fitting and the second pipe fitting and connects
Head；It is additionally provided with quick coupling on first pipe fitting.
The application method of the above-mentioned weld seam pressure testing device of the present invention includes the following steps：
1) preparation stage：Check face of weld to be measured, it, should be by weld seam when having coating or splash for weld seam both sides
Surface carries out grinding process；Weld seam pressure testing device is mounted on to the detection position of pipeline to be measured, and ensures that weld seam to be measured is in two
Between a rubber seal；
2) the pressure testing stage：Start the external hydraulic pump being arranged on the first pipe fitting and injects hydraulic pressure into the cylinder body of hydraulic package
Oil, piston rod is under the action of hydraulic oil so that rubber seal receives crimp, finally by weld seam both sides sealing；It is to be sealed
Later, start the external hydraulic test pump being arranged on the second pipe fitting and open pressure-testing valve, pressurize into pressure testing hole, in pressure process,
The pressure testing value that maximal force controls external hydraulic test pump should be born according to weld seam, and pressure testing value is avoided to bear maximal force more than weld seam；
Judge weldquality according to pressure testing pore pressure force situation of change；
3) stop phase：It after to be detected, close pressure-testing valve and stops pressurizeing into pressure testing hole, open pressure-relief valve and carry out
Release takes out weld seam pressure testing device when rubber seal is restored to original shape.
As advanced optimizing for above-mentioned technical proposal, further include whether detection rubber seal has slight crack, if having
Slight crack should be replaced；Whether the hydraulic package pipeline inside detection main component has blocking or oil leak, if occurring blocking or oil leak
It should be dredged and be replaced in time.
Further include uniformly being coated with profit in the outer surface of two rubber seal as advanced optimizing for above-mentioned technical proposal
Lubricating oil.
Compared with detection device in the prior art, weld seam pressure testing device using the present invention and its application method tool
It has the following advantages：
(1) simple structure and reasonable design pressurizes to pressure test plug by the way of hydraulic pressure, more equal with stress
It is even, and pressure more easily controls in pressure process, while the design of roll wheel assembly can reduce pressure test plug and pipeline inner wall
Frictional force, improve the service life of pressure test plug.
(2) easy for installation, it is easy to operate；After operating personnel install device, it only need to manipulate hydraulic system and pressurize
, while pressure changing can be observed in real time, accuracy of detection is relatively high.
(3) testing cost effectively reduces, while later maintenance cost also decreases, and has preferable economic benefit.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of weld seam pressure testing device of the present invention.
Attached drawing 2 is schematic cross-section of the weld seam pressure testing device of the present invention when installing and using.
Specific implementation mode
1-2 is described in detail the structure and its application method of weld seam pressure testing device of the present invention below in conjunction with the accompanying drawings.
A kind of weld seam pressure testing device, which includes main component 1, the hydraulic pressure group that is arranged inside main component
Part, two rubber seal 2,3 being set on main component and the pressure testing tube assembly being arranged on main component；Wherein：Described two
A rubber seal interval setting；The hydraulic package includes cylinder body 4, piston rod 5 and the hydraulic oil being arranged in cylinder body；The cylinder body
It is connected to external hydraulic pump 7 by the first pipe fitting 6；One end of piston rod is arranged in cylinder body, and the other end stretches out outside main component simultaneously
It can be moved back and forth in cylinder body；By the way that the supported flange 8,9 in hydraulic package both sides is arranged, hydraulic package is fixedly mounted on master
Internal portion；It is connected inside pressure testing tube assembly and main component, pressure testing tube assembly includes 10 He of pressure testing hole being mounted on main component
Relief hole 11, the pressure testing hole and relief hole are connected to by the way that the pressure-testing valve 13 on the second pipe fitting 12 and relief valve 14 is arranged respectively
External hydraulic test pump 15.Second pipe fitting includes pressure testing pipe and relief tube, is wherein provided with three-way component on pressure testing pipe, the threeway
It is connected respectively with pressure-testing valve, pressure gauge and pressure testing pipe on component.Second pipe fitting includes pressure testing pipe and relief tube, pilot scale
Pressure sensor is provided in pressure pipe, which connect with external controller data-signal, external controller and pressure testing
Valve control connection；The external controller includes display apparatus assembly, storage device component, input equipment component, PLC control lists
Member, comparing unit, pressure prewarning unit；The PLC control unit passes through data line and display apparatus assembly, storage device group respectively
Part, input equipment component, comparing unit, the control connection of pressure prewarning unit；Input equipment is also connect with pressure testing pump signal；Compare
Unit is carried out by the pressure testing pipe pressure value for detecting pressure sensor and the pressure preset being arranged in storage device component
Compare, and comparison result is sent to PLC control unit；PLC control unit according to comparison result control pressure-testing valve energization or
Person disconnects and control pressure prewarning unit sends out early warning sound.The external hydraulic test pump is air pump or hydraulic pump.Each
Rubber seal, which is fixed by the way that the snap ring 16 in rubber seal both sides and baffle ring 17 is arranged, to be arranged in the outer of main component
On wall.The spacing of two rubber seal is at least more than weld width；Roll wheel assembly 18 is additionally provided on the both sides of main component.The
It is both provided with pipe fitting crossover sub 19 on one pipe fitting and the second pipe fitting；Quick coupling 20 is additionally provided on first pipe fitting.
A kind of above-mentioned application method of weld seam pressure testing device of the present invention includes the following steps：
1) preparation stage：Check face of weld to be measured, it, should be by weld seam when having coating or splash for weld seam both sides
Surface carries out grinding process；Weld seam pressure testing device is mounted on to the detection position of pipeline to be measured, and ensures that weld seam to be measured is in two
Between a rubber seal；
2) the pressure testing stage：Start the external hydraulic pump being arranged on the first pipe fitting and injects hydraulic pressure into the cylinder body of hydraulic package
Oil, piston rod is under the action of hydraulic oil so that rubber seal receives crimp, finally by weld seam both sides sealing；It is to be sealed
Later, start the external hydraulic test pump being arranged on the second pipe fitting and open pressure-testing valve, pressurize into pressure testing hole, in pressure process,
The pressure testing value that maximal force controls external hydraulic test pump should be born according to weld seam, and pressure testing value is avoided to bear maximal force more than weld seam；
Judge weldquality according to pressure testing pore pressure force situation of change；
3) stop phase：It after to be detected, close pressure-testing valve and stops pressurizeing into pressure testing hole, open pressure-relief valve and carry out
Release takes out weld seam pressure testing device when rubber seal is restored to original shape.
In step 1), further include whether detection rubber seal has slight crack, if having slight crack should be replaced；Detection
Whether the hydraulic package pipeline inside main component has blocking or oil leak, if occurring blocking or oil leak should carry out dredging and more in time
It changes.Further include uniformly being coated with lubricating oil in the outer surface of two rubber seal in step 1).
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (5)
1. a kind of weld seam pressure testing device, it is characterised in that：The weld seam pressure testing device includes main component (1), is arranged in main component
The hydraulic package in portion, two rubber seal (2,3) being set on main component and the pressure testing tube assembly being arranged on main component；
Wherein：Described two rubber seal interval settings；The hydraulic package includes cylinder body (4), piston rod (5) and is arranged in cylinder body
Hydraulic oil；The cylinder body is connected to external hydraulic pump (7) by the first pipe fitting (6)；One end of piston rod is arranged in cylinder body, separately
One end is stretched out outside main component and can be moved back and forth in cylinder body；It, will by the way that the supported flange (8,9) in hydraulic package both sides is arranged
Hydraulic package is fixedly mounted on body interior；It is connected inside pressure testing tube assembly and main component, pressure testing tube assembly includes being mounted on
Pressure testing hole (10) on main component and relief hole (11), the pressure testing hole and relief hole are respectively by being arranged on the second pipe fitting (12)
Pressure-testing valve (13) and relief valve (14) be connected to external hydraulic test pump (15)；
Second pipe fitting includes pressure testing pipe and relief tube, is wherein provided with pressure sensor on pressure testing pipe, the pressure sensor
It is connect with external controller data-signal, external controller is connected with pressure-testing valve control；The external controller includes display equipment
Component, storage device component, input equipment component, PLC control unit, comparing unit, pressure prewarning unit；PLC controls are single
Member passes through data line and display apparatus assembly, storage device component, input equipment component, comparing unit, pressure early warning list respectively
Member control connection；Input equipment is also connect with pressure testing pump signal；Comparing unit passes through the pressure testing pipe pressure that detects pressure sensor
Force value is compared with the pressure preset being arranged in storage device component, and comparison result is sent to PLC control unit；
PLC control unit sends out early warning according to the energization or disconnection of comparison result control pressure-testing valve and control pressure prewarning unit
Prompt tone；
The spacing of two rubber seal is at least more than weld width；Roll wheel assembly (18) is additionally provided on the both sides of main component；
The application method of the weld seam pressure testing device includes the following steps：
1) preparation stage：Check face of weld to be measured, it, should be by face of weld when having coating or splash for weld seam both sides
Carry out grinding process；Weld seam pressure testing device is mounted on to the detection position of pipeline to be measured, and ensures that weld seam to be measured is in two rubbers
Between glue sealing ring；
2) the pressure testing stage：Start the external hydraulic pump being arranged on the first pipe fitting and inject hydraulic oil into the cylinder body of hydraulic package,
Piston rod is under the action of hydraulic oil so that rubber seal receives crimp, finally by weld seam both sides sealing；It is to be sealed it
Afterwards, start the external hydraulic test pump being arranged on the second pipe fitting and open pressure-testing valve, pressurize into pressure testing hole, in pressure process, answer
The pressure testing value that maximal force controls external hydraulic test pump is born according to weld seam, pressure testing value is avoided to bear maximal force more than weld seam；Root
Judge weldquality according to pressure testing pore pressure force situation of change；
3) stop phase；It after to be detected, close pressure-testing valve and stops pressurizeing into pressure testing hole, open pressure-relief valve and unloaded
Pressure takes out weld seam pressure testing device when rubber seal is restored to original shape；
In step 1), further include whether detection rubber seal has slight crack, if having slight crack should be replaced；Detect main body
Whether the hydraulic package pipeline inside part has blocking or oil leak, if occurring blocking or oil leak should be dredged and be replaced in time；
Further include uniformly being coated with lubricating oil in the outer surface of two rubber seal in step 1).
2. a kind of weld seam pressure testing device according to claim 1, it is characterised in that：Second pipe fitting include pressure testing pipe and
Relief tube is wherein provided with three-way component on pressure testing pipe, is connected respectively with pressure-testing valve, pressure gauge and pressure testing pipe on the three-way component
It connects.
3. a kind of weld seam pressure testing device according to any one of claim 1-2, it is characterised in that：The external hydraulic test pump
For air pump or hydraulic pump.
4. a kind of weld seam pressure testing device according to claim 1, it is characterised in that：Each rubber seal passes through setting
Snap ring (16) in rubber seal both sides is fixed with baffle ring (17) to be arranged on the outer wall of main component.
5. a kind of weld seam pressure testing device according to claim 1, it is characterised in that：It is all provided on first pipe fitting and the second pipe fitting
It is equipped with pipe fitting crossover sub (19)；Quick coupling (20) is additionally provided on first pipe fitting.
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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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| 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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| CN105628505A CN105628505A (en) | 2016-06-01 |
| CN105628505B true CN105628505B (en) | 2018-11-09 |
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Citations (3)
| 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 |
| 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178020A (en) * | 1977-12-15 | 1979-12-11 | Big-Inch Marine Systems, Inc. | Locking slip joint and method of use |
| JPH09233862A (en) * | 1995-12-18 | 1997-09-05 | Seiko Epson Corp | Method and device for generating power using piezoelectric body, and electronic equipment |
| CN202066751U (en) * | 2011-01-25 | 2011-12-07 | 中国石油大学(北京) | Pressure testing device for flange weld joints |
| CN103912758B (en) * | 2014-04-22 | 2016-01-27 | 钊田 | A kind of on-line production expansion duct closing type 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 (3)
| 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 |
| 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 |
| 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 |
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| CN105628505A (en) | 2016-06-01 |
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Inventor after: Zhou Qingtao Inventor after: Zhou Qingbing Inventor after: Zhou Chunxu Inventor after: Zhang Wanbing Inventor after: Wang Hebo Inventor after: Liu Lihui Inventor before: Zhou Qingtao Inventor before: Zhou Qingbing Inventor before: Zhou Chunxu |
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