CN106996901A - Girth joint pressure test tool and pressure-measuring method in pipe - Google Patents
Girth joint pressure test tool and pressure-measuring method in pipe Download PDFInfo
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- CN106996901A CN106996901A CN201710176195.9A CN201710176195A CN106996901A CN 106996901 A CN106996901 A CN 106996901A CN 201710176195 A CN201710176195 A CN 201710176195A CN 106996901 A CN106996901 A CN 106996901A
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- pressure testing
- pressure
- main body
- test tool
- rubber seal
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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
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses girth joint pressure test tool in one kind pipe, including columned pressure testing main body (4), the periphery at pressure testing main body (4) two ends is circumferentially spaced respectively to be provided with several assembly pulleys (5), the periphery of the pressure testing main body (4) is axially spaced to be provided with two rubber seal (3), rubber seal (3) is internally provided with toroidal cavity, one end of pressure testing main body is provided with the hydraulic line for being communicated to rubber seal (3) inner annular cavity, the exhaust line and waterflood-transmission line in one section of pressure testing body outer wall face being communicated between two rubber seal (3).The invention also discloses girth joint pressure-measuring method in one kind pipe.The present invention is relative to the overall pressure-measuring method of conventional pipeline, and water injection rate needed for pressure testing scope and pressure testing is greatly reduced, improves weld seam work pressure test efficiency, enhance weld seam pressure testing security reliability.Solve the problem for being difficult to that overall pressure testing is carried out to the girth joint that new welding is produced in the pipeline maintainance operation put into production.
Description
Technical field
The invention belongs to the technical field of weld seam pressure test tool, and in particular to girth joint pressure test tool and pressure testing in one kind pipe
Method.
Background technology
Conventional girth joint pressure testing is to install overall hammering method in blind plate or pipe cap, pipe by pipeline two ends to carry out, should
Method pressure testing scope is big, and water injection rate needed for pressure testing is big, thus pressure testing efficiency is low, pressure testing risk high.
Above-mentioned discussion content purpose be to reader introduce may be described below and/or advocate it is of the invention each
The various aspects of the related technology of individual aspect, it is believed that the discussion content contributes to as reader with background's information, to be conducive to more
Understand various aspects of the invention well, it is therefore to be understood that be that these discussions are read with this angle, it is existing without being to recognize that
Technology.
The content of the invention
Girth joint pressure test tool and examination in a kind of pipe are provided it is an object of the invention to avoid of the prior art not enough
Pressure method, it disclosure satisfy that the demand that independent pressure testing inspection is carried out to the girth joint in pipe, and pressure testing scope significantly reduces, and improve
Pressure testing efficiency, reduces pressure testing risk.
The purpose of the present invention is achieved through the following technical solutions：
On the one hand there is provided girth joint pressure test tool in one kind pipe, including columned pressure testing main body, the pressure testing main body two
The periphery at end is circumferentially spaced respectively to be provided with several assembly pulleys, and the periphery of the pressure testing main body is axially spaced to be provided with two
Individual rubber seal, the rubber seal is internally provided with toroidal cavity, and one end of the pressure testing main body, which is provided with, to be communicated to
The hydraulic line of rubber seal inner annular cavity, one section of pressure testing body outer wall face being communicated between two rubber seal
Exhaust line and waterflood-transmission line.
As a further improvement, the periphery of the pressure testing main body forms fluted, and the rubber seal is arranged on recessed
In groove.
As a further improvement, the pressure testing main body includes being respectively arranged at its front end, the front shroud of rear end, bonnet
The assembly pulley is set respectively on plate, the front shroud, back shroud, the groove close to pressure testing body end side cell wall by
Front shroud, back shroud are formed.
As a further improvement, the groove is provided with hold-down ring close to the side of pressure testing body end.
As a further improvement, being provided between the wheel shaft of the assembly pulley and pressure testing main body makes assembly pulley radially outer
The elastic component of expansion.
As a further improvement, in addition to hydraulic trolley, the hydraulic trolley is connected with the rear end of pressure testing main body.
As a further improvement, the hydraulic trolley include main frame and be arranged on main frame hydraulic motor, after
Wheel, front vehicle wheel, the first travelling gear, the second travelling gear, worm gear, worm screw, output shaft, power transmission shaft, the main frame and examination
It is hinged between pressure main body by connecting rod, the output shaft of the hydraulic motor is connected with worm screw, worm and wheel transmission coordinates, snail
Wheel drives the first travelling gear coaxial rotating, and the first travelling gear is engaged with the second travelling gear, before the second travelling gear drives
Vehicle wheel rotation.
As a further improvement, top wheel is provided with above the main frame, between the wheel shaft and main frame of the top wheel
It is provided with the elastic component for making top wheel push up upwards.
As a further improvement, the main frame afterbody is provided with tail rope hole.
Girth joint pressure test tool in the pipe that the present invention is provided, including columned pressure testing main body, the pressure testing main body two ends
Periphery it is circumferentially spaced respectively be provided with several assembly pulleys, the periphery of the pressure testing main body is axially spaced to be provided with two
Rubber seal, the rubber seal is internally provided with toroidal cavity, and one end of the pressure testing main body, which is provided with, is communicated to rubber
The hydraulic line of glue sealing ring inner annular cavity, one section of pressure testing body outer wall face being communicated between two rubber seal
Exhaust line and waterflood-transmission line.Pressure test tool is sent into pipeline, girth joint position is moved to, by hydraulic line toward rubber seal
The internal injection high pressure liquid force feed of circle makes its dilatancy, thus formed on girth joint periphery can independent pressure testing small range closed chamber
Body.The water filling drawn from pressure testing seal cavity and exhaust line have been preset in pressure testing main body, it is closed toward pressure testing by waterflood-transmission line
Cavity water filling, chamber air is drained by exhaust line.Illustrate that chamber air has been discharged when the stable discharge water of exhaust line dry
Only, then by waterflood-transmission line toward pressure testing airtight cavity water filling suppress the pressure testing realized to the wall scroll girth joint in pipe.Pressure testing terminates
Afterwards, eliminate rubber seal by hydraulic oil of releasing to expand, reclaim pressure test tool.The present invention is integrally tried relative to conventional pipeline
Pressure method, water injection rate needed for pressure testing scope and pressure testing is greatly reduced, and improves weld seam work pressure test efficiency, enhances weld seam examination
Security reliability is pressed, and it is whole to solve the girth joint progress for being difficult to produce in the pipeline maintainance operation put into production to new welding
The problem of body pressure testing.
On the other hand, present invention also offers girth joint pressure-measuring method in one kind pipe, using pressure test tool as described above
Weld seam pressure testing operation is carried out, is comprised the following steps：
Step 1, pressure test tool is pulled in inside pipeline or using push rod or hydraulic trolley by pressure test tool using rope
It is pushed into inside pipeline；
Step 2, mobile pressure test tool adjust the position of its in-line, the girth joint position of pipeline is placed in pressure test tool
Two rubber seal between；The position of pressure test tool in-line can be by measuring rope or push rod or hydraulic trolley
Determined into the length in pipe；
Step 3, by hydraulic line to rubber seal inner annular cavity inject hydraulic oil, rubber seal radially it is swollen
Extrude between pipeline inwall, the pipe string inwall and pressure testing body outer wall between two rubber seal and formed after bulging deformation
Can independent pressure testing airtight cavity；
Step 4, opening exhaust line and waterflood-transmission line, by waterflood-transmission line in the water filling into airtight cavity, airtight cavity
Gas discharged by exhaust line, close exhaust line when the stable discharge water of exhaust line, pass through waterflood-transmission line toward sealing
The pressure testing realized to the wall scroll girth joint in pipe is suppressed in cavity water filling；
After step 5, pressure testing terminate, the expansion for hydraulic oil elimination rubber seal of being released by hydraulic line；
Step 6, using rope or push rod or hydraulic trolley from pipeline internal recovering pressure test tool.
The pressure-measuring method of the present invention is relative to the overall pressure-measuring method of conventional pipeline, water injection rate needed for pressure testing scope and pressure testing
It is greatly reduced, improves weld seam work pressure test efficiency, enhances weld seam pressure testing security reliability.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not constitute any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is the structural representation of girth joint pressure test tool in pipe.
Fig. 2 is the structural representation of hydraulic trolley.
Fig. 3 is Fig. 2 left view.
Fig. 4 is the structural representation of girth joint pressure test tool in the pipe comprising hydraulic trolley.
Embodiment
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
Apply example the present invention is described in further detail, it is necessary to explanation, in the case where not conflicting, embodiments herein and
Feature in embodiment can be mutually combined.
As shown in figure 1, the embodiment of the present invention provides girth joint pressure test tool in a kind of pipe, including columned pressure testing main body
4, the periphery at the two ends of pressure testing main body 4 is circumferentially spaced respectively to be provided with outside several assembly pulleys 5, the pressure testing main body 4
Week is axially spaced to be provided with two rubber seal 3, and the distance between two rubber seal are than girth joint and its heat affecting
The width in area is bigger and considers certain surplus, to adapt to the error in place of pressure test tool；The rubber seal 3 is internally provided with
Toroidal cavity, rubber seal has the characteristics of hardness is high, shrinkage factor is small, and it is hollow structure, injection high pressure liquid force feed that it is internal
Afterwards, its radial deformation can make rubber seal extrude the formation sealing of pipeline inwall.One end of the pressure testing main body 4 is provided with company
One section of pressure testing main body for pass to the hydraulic line of the inner annular cavity of rubber seal 3, being communicated between two rubber seal 3
The exhaust line and waterflood-transmission line of 4 outside wall surfaces.Waterflood-transmission line, exhaust line, hydraulic line and hydraulic trolley hydraulic line will be logical
The unity of form for crossing umbilical cables is provided, and prevents different pipelines from being wound in operation process.
As further preferred embodiment, the periphery of the pressure testing main body 4 forms fluted, the rubber seal
3 are set in a groove.Groove can be limited when rubber seal 3 expands and axially extended out, it is ensured that the radial direction of rubber seal 3 is extended out.
As further preferred embodiment, the pressure testing main body 4 includes being respectively arranged at the protecgulum of its front end, rear end
The assembly pulley 5 is set respectively on plate 1, back shroud 6, the front shroud 1, back shroud 6, and the groove is close to the end of pressure testing main body 4
The side cell wall in portion is formed by front shroud 1, back shroud 6.
As further preferred embodiment, the groove is provided with hold-down ring close to the side of the end of pressure testing main body 4
2.Hold-down ring has enough height to prevent during rubber seal dilatancy to both sides gap protrusion.
As further preferred embodiment, being provided between the wheel shaft and pressure testing main body 4 of the assembly pulley 5 makes pulley
The elastic component that group 5 is radially extended out.Assembly pulley 5 is contacted with pipeline inwall all the time by the elastic force of elastic component, it is ensured that pressure test tool
When in-line is moved, pressure testing main body 4, rubber seal 3 will not produce direct friction with pipeline inwall.
As shown in figure 4, also including hydraulic trolley, the hydraulic trolley is connected with the rear end of pressure testing main body 4.Pressure test tool can
Pipeline is sent into by hydraulic trolley.
As shown in Figures 2 and 3, the hydraulic trolley includes main frame 10 and the hydraulic motor being arranged on main frame 10
13rd, rear wheel 12, front vehicle wheel 16, the first travelling gear 17, the second travelling gear 21, worm gear 9, worm screw 15, output shaft 14, transmission
Axle 19, is hinged, the mode being hinged is easy to pressure test tool can be curved between the main frame 10 and pressure testing main body 4 by connecting rod 7
Moved in bent pipeline.The output shaft of the hydraulic motor 13 is connected with worm screw 15, and worm screw 15 is driven with worm gear 9 to be coordinated, worm gear 9
The coaxial rotating of the first travelling gear 17 is driven, the first travelling gear 17 is engaged with the second travelling gear 21, the second travelling gear 21
Front vehicle wheel 16 is driven to rotate.The power source of hydraulic trolley is come from hydraulic motor, the output shaft and transmission mechanism of hydraulic motor
Worm gear is connected, and worm gear coordinates with worm-drive, and worm screw drives the first travelling gear coaxial rotating, the first travelling gear and second to pass
Moving gear is engaged, and the power transmission shaft of the second travelling gear makes Plantago minuta vehicle wheel rotation, and Plantago minuta vehicle wheel rotation makes dolly be moved in pipe
It is dynamic.Dolly head is by the connection of connecting rod and pressure test tool, so as to realize in-line portion push-in and reclaim pressure test tool
Function.
As further preferred embodiment, the top of main frame 10 is provided with top wheel 8, the wheel shaft of the top wheel 8
Being provided between main frame 10 makes top take turns 8 elastic components pushed up upwards.Top wheel by elastic component elastic force all the time with pipeline inwall
Contact, elastic force ensures that hydraulic trolley front-wheel and pipeline inwall have enough frictional force.
As further preferred embodiment, the afterbody of main frame 10 is provided with tail rope hole 11.Tail rope hole 11 can be tied up
There is rope, the position of pressure test tool main body in-line is confirmed by measuring rope length；Pass through rope when hydraulic trolley fails
Son reclaims pressure test tool.
During present invention work, girth joint pressure test tool sends into pipeline by hydraulic trolley, girth joint position is moved to, by past
Injection high pressure liquid force feed makes its dilatancy inside rubber seal, thus formed on girth joint periphery can independent pressure testing small model
Enclose airtight cavity.The water filling drawn from pressure testing seal cavity and exhaust line have been preset in pressure testing main body, it is past by waterflood-transmission line
Pressure testing airtight cavity water filling, chamber air is drained by exhaust line.Illustrate chamber air when the stable discharge water of exhaust line
Discharge clean, then the pressure testing realized to the wall scroll girth joint in pipe toward pressure testing airtight cavity water filling is suppressed by waterflood-transmission line.
After pressure testing terminates, rubber seal is eliminated by hydraulic oil of releasing and expanded, pressure test tool body is reclaimed by hydraulic trolley.This hair
The overall pressure-measuring method of the bright pipeline relative to routine, water injection rate needed for pressure testing scope and pressure testing is greatly reduced, and improves weld seam
Work pressure test efficiency, enhances weld seam pressure testing security reliability, and solves and be difficult in the pipeline maintainance operation put into production
The problem of overall pressure testing is carried out to the girth joint that new welding is produced.
The embodiment of the present invention additionally provides girth joint pressure-measuring method in a kind of pipe, is carried out using pressure test tool as described above
Weld seam pressure testing operation, comprises the following steps：
Step 1, pressure test tool is pulled in inside pipeline or using push rod or hydraulic trolley by pressure test tool using rope
It is pushed into inside pipeline；
Step 2, mobile pressure test tool adjust the position of its in-line, the girth joint position of pipeline is placed in pressure test tool
Two rubber seal 3 between；The position of pressure test tool in-line can be small by measuring rope or push rod or hydraulic pressure
Car is determined into the length in pipe；
Step 3, hydraulic oil to the inner annular cavity of rubber seal 3 injected by hydraulic line, rubber seal 3 is radially
Extruded after dilatancy between pipeline inwall, the pipe string inwall and the outer wall of pressure testing main body 4 between two rubber seal 3
Formed can independent pressure testing airtight cavity；
Step 4, opening exhaust line and waterflood-transmission line, by waterflood-transmission line in the water filling into airtight cavity, airtight cavity
Gas discharged by exhaust line, close exhaust line when the stable discharge water of exhaust line, pass through waterflood-transmission line toward sealing
The pressure testing realized to the wall scroll girth joint in pipe is suppressed in cavity water filling；
After step 5, pressure testing terminate, the expansion for hydraulic oil elimination rubber seal 3 of being released by hydraulic line；
Step 6, using rope or push rod or hydraulic trolley from pipeline internal recovering pressure test tool.
Many details are elaborated in above description to facilitate a thorough understanding of the present invention, still, the present invention can be with
It is different from other modes described here to implement using other, it is thus impossible to be interpreted as limiting the scope of the invention.
In a word, although the present invention lists above-mentioned preferred embodiment, although it should be noted that those skilled in the art
Member can carry out various change and remodeling, unless such change and remodeling deviate from the scope of the present invention, otherwise should all wrap
Include within the scope of the present invention.
Claims (10)
1. girth joint pressure test tool in one kind pipe, it is characterised in that：Including columned pressure testing main body (4), the pressure testing main body
(4) periphery at two ends is circumferentially spaced respectively is provided with several assembly pulleys (5), and the periphery of the pressure testing main body (4) is vertically
Two rubber seal (3) are arranged at intervals with, the rubber seal (3) is internally provided with toroidal cavity, the pressure testing main body
(4) one end, which is provided with, to be communicated to the hydraulic line of rubber seal (3) inner annular cavity, is communicated to two rubber seal
(3) exhaust line and waterflood-transmission line of one section of pressure testing main body (4) outside wall surface between.
2. girth joint pressure test tool in pipe according to claim 1, it is characterised in that：The periphery of the pressure testing main body (4)
Form fluted, the rubber seal (3) is set in a groove.
3. girth joint pressure test tool in pipe according to claim 2, it is characterised in that：The pressure testing main body (4) includes dividing
Its front end, the front shroud (1) of rear end, back shroud (6) are not arranged at, and the front shroud (1), back shroud set institute respectively on (6)
Assembly pulley (5) is stated, side cell wall of the groove close to pressure testing main body (4) end is formed by front shroud (1), back shroud (6).
4. girth joint pressure test tool in pipe according to claim 3, it is characterised in that：The groove is close to pressure testing main body
(4) side of end is provided with hold-down ring (2).
5. girth joint pressure test tool in pipe according to claim 1, it is characterised in that：The wheel shaft of the assembly pulley (5) with
The elastic component for making assembly pulley (5) radially extend out is provided between pressure testing main body (4).
6. girth joint pressure test tool in pipe according to any one of claim 1 to 5, it is characterised in that：Also include hydraulic pressure
Dolly, the hydraulic trolley is connected with the rear end of pressure testing main body (4).
7. girth joint pressure test tool in pipe according to claim 6, it is characterised in that：The hydraulic trolley includes main frame
And the hydraulic motor (13), rear wheel (12), front vehicle wheel (16), the first travelling gear that are arranged on main frame (10) (10)
(17), the second travelling gear (21), worm gear (9), worm screw (15), output shaft (14), power transmission shaft (19), the main frame (10) and
It is hinged between pressure testing main body (4) by connecting rod (7), the output shaft of the hydraulic motor (13) is connected with worm screw (15), worm screw
(15) with worm gear (9) be driven coordinate, worm gear (9) drive the first travelling gear (17) coaxial rotating, the first travelling gear (17) with
Second travelling gear (21) is engaged, and the second travelling gear (21) drives front vehicle wheel (16) to rotate.
8. girth joint pressure test tool in pipe according to claim 7, it is characterised in that：Set above the main frame (10)
There is top wheel (8), being provided between the wheel shaft and main frame (10) of the top wheel (8) makes top take turns the elastic component that (8) are pushed up upwards.
9. girth joint pressure test tool in pipe according to claim 7, it is characterised in that：Main frame (10) afterbody is set
There is tail rope hole (11).
10. girth joint pressure-measuring method in one kind pipe, using girth joint pressure testing in pipe as claimed in any one of claims 1-9 wherein
Instrument carries out weld seam pressure testing operation, comprises the following steps：
Step 1, pressure test tool is pulled in inside pipeline using rope or pressure test tool is pushed into using push rod or hydraulic trolley
Inside pipeline；
Step 2, mobile pressure test tool adjust the position of its in-line, the girth joint position of pipeline is placed in the two of pressure test tool
Between individual rubber seal (3)；The position of pressure test tool in-line can be by measuring rope or push rod or hydraulic trolley
Determined into the length in pipe；
Step 3, by hydraulic line to rubber seal (3) inner annular cavity inject hydraulic oil, rubber seal (3) radially
Pipeline inwall is extruded after dilatancy, the pipe string inwall between two rubber seal (3) and pressure testing main body (4) outer wall
Between formed can independent pressure testing airtight cavity；
Step 4, opening exhaust line and waterflood-transmission line, the gas by waterflood-transmission line in the water filling into airtight cavity, airtight cavity
Body is discharged by exhaust line, and exhaust line is closed when the stable discharge water of exhaust line, by waterflood-transmission line toward seal cavity
The pressure testing realized to the wall scroll girth joint in pipe is suppressed in water filling；
After step 5, pressure testing terminate, the expansion for hydraulic oil elimination rubber seal (3) of being released by hydraulic line；
Step 6, using rope or push rod or hydraulic trolley from pipeline internal recovering pressure test tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176195.9A CN106996901A (en) | 2017-03-23 | 2017-03-23 | Girth joint pressure test tool and pressure-measuring method in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176195.9A CN106996901A (en) | 2017-03-23 | 2017-03-23 | Girth joint pressure test tool and pressure-measuring method in pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106996901A true CN106996901A (en) | 2017-08-01 |
Family
ID=59431894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710176195.9A Pending CN106996901A (en) | 2017-03-23 | 2017-03-23 | Girth joint pressure test tool and pressure-measuring method in pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106996901A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907427A (en) * | 2017-12-29 | 2018-04-13 | 河南省第二建设集团有限公司 | A kind of pipeline pressure testing device and application method |
| CN108458971A (en) * | 2018-01-08 | 2018-08-28 | 国电锅炉压力容器检验中心 | Position while welding lookup method |
| CN108895224A (en) * | 2018-07-09 | 2018-11-27 | 叶泽航 | A kind of glass reinforced plastic push pipe joint pressure testing device |
| CN115326534A (en) * | 2021-05-10 | 2022-11-11 | 湖北建研科峰工程质量检测有限公司 | Quick installation device for pipe pressing test |
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| CN108458971A (en) * | 2018-01-08 | 2018-08-28 | 国电锅炉压力容器检验中心 | Position while welding lookup method |
| CN108895224A (en) * | 2018-07-09 | 2018-11-27 | 叶泽航 | A kind of glass reinforced plastic push pipe joint pressure testing device |
| CN115326534A (en) * | 2021-05-10 | 2022-11-11 | 湖北建研科峰工程质量检测有限公司 | Quick installation device for pipe pressing test |
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Application publication date: 20170801 |
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