CN203350135U - Internal pressure-bending load testing device for polyolefin pipe and polyolefin composite pipe - Google Patents
Internal pressure-bending load testing device for polyolefin pipe and polyolefin composite pipe Download PDFInfo
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- CN203350135U CN203350135U CN 201320387845 CN201320387845U CN203350135U CN 203350135 U CN203350135 U CN 203350135U CN 201320387845 CN201320387845 CN 201320387845 CN 201320387845 U CN201320387845 U CN 201320387845U CN 203350135 U CN203350135 U CN 203350135U
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Abstract
The utility model relates to a load testing device for a polyolefin pipe, a polyolefin composite pipe and the like, and aims at providing an internal pressure-bending load testing device for a polyolefin pipe and a polyolefin composite pipe. The device comprises an internal pressure loading device and a bending loading device, wherein sealing devices are arranged at two ends of a pipe to be detected, and the internal pressure loading device is connected to the sealing device at one end; the bending loading device comprises a loading mechanism and a transmission device, and the transmission device is arranged on a truss; a hoop of a middle suspension column is connected with the loading mechanism through a rod piece and the transmission device; the loading mechanism is connected with a controller; the controller is used for regulating a load and a loading velocity through control on the bending loading device, and force and displacement of the middle section of the pipe in a testing pressure are recorded in real time. The load testing device can simultaneously apply a composite load of an internal pressure load and a bending static load or a bending fatigue load to a pipeline at different temperatures so as to perform mechanical behavior or safety performance testing on the polyolefin pipe and the polyolefin composite pipe under a multi-load coupling effect.
Description
Technical field
The utility model is the load test device about polyolefin and complex pipe thereof etc., particularly pressure-bending load proving installation in a kind of polyolefin pipe and polyolefin complex pipe.
Background technology
Plastic tube and complex pipe thereof have good toughness, shock resistance, corrosion resistant characteristic of property, and long service life, so such tubing is applied to the fields such as oil, chemical industry, municipal administration more and more.As far back as the forties in 20th century, the developed countries such as the U.S. just bring into use plastic tube, and to the nineties in 20th century, PE pipe proportion in all gas supply pipes surpasses 90%.According to the plastic conduit database PPDC of the council (Plastic Pipe Database Committee), add up, within 2008, the whole America plastics Trunk Line increased by 55655 km than 2006, plastics facility sum has increased by 2,300,000, the plastic tube use amount is ascendant trend year by year, and at home, the PE pipe was brought into use from the nineties in 20th century, and use amount constantly rose in recent years.According to statistics, within 2009, plastic conduit output is 580.4 ten thousand tons, increases by 18.9% on a year-on-year basis, and wherein the PE pipe accounts for 29% of total amount; 1～September in 2010, the plastic conduit turnout was 552.81 ten thousand tons, increased by 28.23% on a year-on-year basis.Reinforced plastic pipe, as emerging pipeline, has kept swift and violent growth momentum equally.By statistics both domestic and external, can be seen, usage quantity and the scale of plastics and composite pipe thereof enlarge gradually, but then, plastics and complex pipe constructing operation personnel technological literacy thereof have much room for improvement, the management maintenance personnel are not enough to the understanding of plastics and Composite pipe properties characteristics, it is not strong that the attention of pipeline maintenance is reached to management regulation not, so the accident that plastics and complex pipe occurred in construction and application stage is not rarely seen.According to researchist's finding, show, the failure cause of plastics and complex pipe thereof can be divided into again according to the load classification: bending load, extrusion load and point load etc.These load are polyolefin pipe and the complex pipe thereof of independent role or coupling pressure in carrying separately, has just formed the complex load stand under load of pipeline.
For the research of plastic tube and complex pipe mechanical property thereof for some time, but mechanical property when traditional research is mainly paid close attention to tubing, pipe fitting and born single inner pressuring load, as explosion bulge test in short-term research, hydrostatic test research etc. when long, and do not consider extrusion load, bending load and the point load that may bear in the pipeline real work, and the pipeline failure risk caused by these load.Wherein a major reason is owing to lacking corresponding method of testing and equipment, causes the Performance Characteristics research under complex load of plastic tube and complex pipe thereof to be difficult to carry out.Therefore, can make up the vacancy of existing testing equipment, the device demand of plastic tube and complex pipe thereof being done to load test is strong.
The utility model content
The technical problems to be solved in the utility model is, overcomes deficiency of the prior art, and pressure-bending load proving installation in a kind of polyolefin pipe that can be tested under the different temperatures environment and polyolefin complex pipe is provided.
For solving the problems of the technologies described above, solution of the present utility model is:
Pressure-bending load proving installation in a kind of polyolefin pipe and polyolefin complex pipe is provided, comprises for maintaining the interior pressure charger of tubing inside water pressure to be measured, and crooked charger; Packoff is established at the two ends of tubing to be measured, and described interior pressure charger is connected with the packoff of an end wherein; This testing machine also comprises truss and Water Tank with Temp.-controlled, and the carrier bar of truss is positioned at Water Tank with Temp.-controlled top and in parallel; A suspention post straight down is equipped with respectively at the two ends of carrier bar, in suspention post bottom, respectively is provided with a circular clip for fixing tubing to be measured, and the connecting line in the clip center of circle is mutually vertical and coplanar with the axis of two suspention posts; On the carrier bar between two ends suspentions post, also be provided with one straight down in the middle of the suspention post, the axis of three suspention posts is coplanar, and between middle suspention post and two ends suspention post apart from equating; The bottom of middle suspention post is equipped with circular clip; The center of circle conllinear of three clips, disc are parallel to each other; Crooked charger comprises load maintainer and gearing, and gearing is arranged on truss; The clip of middle suspention post is connected with load maintainer by rod member, gearing, and load maintainer provides power to make clip drive pipe fitting to be measured and realizes the vertical direction to-and-fro movement; In described rod member, load-measuring device is housed, for recording power load or the displacement load applied; Load maintainer also connects a controller, regulates size and the loading speed of load by the control to crooked charger, and the power that bear in real time record tubing stage casing in process of the test and the displacement of generation.
In the utility model, in the bottom of two ends suspention post, be oppositely arranged two suspension arms that protrude downwards, a triangular support bracket is respectively established in its inboard; A pin-and-hole is all offered in the end of each suspension arm, and two pin-and-holes have identical internal diameter, and its center of circle conllinear and disc are parallel to each other; Set up fixture separately in the described circular clip both sides for fixing tubing to be measured, the distance between two end face is less than the spacing of two suspension arm inboards; Establish coaxial pin-and-hole on two end faces of clip fixture, its internal diameter is identical with the internal diameter of suspension arm end pin-and-hole, and realizes the installation in the suspension arm end by pin; The structure of circular clip is divided into upper and lower two parts, and two-part structure is identical and about the divisional plane symmetry; Stiff end in the clip both sides also provides vertical bolt hole, and realizes the fastening of clip and pin by set bolt.
In the utility model, the end of establishing tubing to be measured is L to distance between the circular clip for fixing tubing to be measured
0, L
0value is taken as 2～5 times of pipe diameter to be measured.
In the utility model, the distance of establishing between the clip of tubing to be measured two ends is L
1, reduce the squeezing action that the two ends clip is treated the test tube material when in the tubing stage casing, carrying out fatigue loading, avoid tubing to be measured at two ends clip constraint place failure, L
1value is taken as 4～10 times of pipe diameter to be measured.
In the utility model, establishing clip disc minimum point is L to the distance of suspending the post bottom in midair
2, can rotate freely L for making clip
2value should be not less than the pipe diameter to be measured of 1.5 times.
In the utility model, described interior pressure charger comprises water pump and controller, and controller is connected with water pump by cable, and water pump is connected with the packoff of pipe end to be measured by flexible pipe.
In the utility model, the load maintainer of described crooked charger is motor or hydraulically operated equipment (HOE).
In the utility model, described truss has a kind of in following structure: truss is across the top of Water Tank with Temp.-controlled and forms cross structure with carrier bar; Perhaps truss is crossed over the setting of Water Tank with Temp.-controlled length direction, and spandrel girder and truss are integrated.
Compared with prior art, the beneficial effects of the utility model are:
Can under different temperatures, provide the complex load of inner pressuring load and crooked static load or bending fatigue load to pipeline simultaneously, realize mechanical behavior or the security performance test under the multi-load coupling of polyolefin and complex pipe thereof.
For improving rigidity and the stability of load carrier, the truss adopted in the utility model and carrier bar form cross structure, when Water Tank with Temp.-controlled can be taked the more simple carrier bar design proposal of a kind of structure more in short-term, only at the tank length direction, single truss is set and plays the effect of hanging test tubing.
The accompanying drawing explanation
The overall schematic that Fig. 1 is interior pressure-bending load testing machine in the utility model.
The front elevational schematic that Fig. 2 is interior pressure-bending load testing machine in the utility model.
Fig. 3 is I place partial enlarged drawing in Fig. 2.
The suspension arm that Fig. 4 is suspention post bottom and the schematic diagram after the clip combination.
Fig. 5 is the structural representation of the suspension arm for suspention post bottom.
Clip the first half structural representation that Fig. 6 uses for fixing tubing to be measured.
The clip assembling schematic diagram that Fig. 7 uses for fixing tubing to be measured.
Fig. 8 is front elevational schematic after suspension arm and clip combination.
The overall schematic that Fig. 9 is single truss-frame structure.
Reference numeral in figure is: 1 packoff; 2 tubing; 3 tanks; 4 suspention posts; 5 truss; 6 interior pressure chargers; 7 clips; 8 fastening bolts; 9 pins; 10 pin-and-holes; 11 suspension arms.
Embodiment
Below in conjunction with accompanying drawing and embodiment, pressure-bending load testing machine in polyolefin of the present utility model and complex pipe thereof is described in further detail:
This device comprises for maintaining the interior pressure charger 6 of tubing 2 inside water pressure to be measured, and crooked charger; Packoff 1 is established at the two ends of tubing 2 to be measured, and described interior pressure charger 6 is connected with the packoff 1 of an end wherein; Described interior pressure charger 6 comprises water pump and controller, and controller is connected with water pump by cable, and water pump is connected with the packoff 1 of tubing to be measured 2 ends by flexible pipe.This is because, when tubing 2 to be measured is tested, also should keep certain interior pressure in tubing 2 to be measured.Controller in interior pressure charger 6 can be controlled in interior pressure size real time record and press and change.
This device also comprises truss 5 and Water Tank with Temp.-controlled 3, and the carrier bar of truss 5 is positioned at Water Tank with Temp.-controlled 3 tops and in parallel; A suspention post 4 straight down is equipped with respectively at the two ends of carrier bar, in suspention post 4 bottoms, respectively is provided with a circular clip 7 for fixing tubing 2 to be measured, and the connecting line in clip 7 centers of circle is mutually vertical and coplanar with the axis of two suspention posts 4; On the carrier bar between two ends suspentions post 4, also be provided with one straight down in the middle of the axis of 4, three suspention posts 4 of suspention post coplanar, and between middle suspention post 4 and two ends suspention post 4 apart from equating; The bottom of middle suspention post 4 is equipped with circular clip 7; The center of circle conllinear of three clips 7, disc are parallel to each other; Crooked charger comprises load maintainer and gearing, and gearing is arranged on truss 5; The clip 7 of middle suspention post 4 is connected with load maintainer by rod member, gearing, and load maintainer provides power to make clip 7 drive pipe fitting to be measured and realizes the vertical direction to-and-fro movement, and this load maintainer can be motor or hydraulically operated equipment (HOE).In described rod member, load-measuring device is housed, for recording power load or the displacement load applied; Load maintainer also connects a controller, regulates size and the loading speed of load by the control to crooked charger, and the power that bear in real time record tubing 2 stage casings in process of the test and the displacement of generation.
Bottom at two ends suspention post 4 is oppositely arranged two suspension arms 11 that protrude downwards, and a triangular support bracket is respectively established in its inboard; The end of each suspension arm 11 is all offered 10, two pin-and-holes 10 of a pin-and-hole and is had identical internal diameter, and its center of circle conllinear and disc are parallel to each other; Set up fixture separately in described circular clip 7 both sides for fixing tubing 2 to be measured, the distance between two end face is less than the spacing of two suspension arm 11 inboards; Establish coaxial pin-and-hole 10 on two end faces of clip 7 fixtures, its internal diameter is identical with the internal diameter of suspension arm 11 end pin-and-holes 10, and the installation realized in suspension arm 11 ends by pin 9; The structure of circular clip 7 is divided into upper and lower two parts, and two-part structure is identical and about the divisional plane symmetry; Stiff end in clip 7 both sides also provides vertical bolt hole, and realizes the fastening of clip 7 and pin 9 by set bolt.
After the closure of two parts up and down of circular clip 7, tubing 2 to be measured is fixed in clip 7, and two clips 7 can be at its center of circle institute connecting shaft line and the determined rotation with in surface of two vertically depending post 4 axis.Two clips 7 can be dismantled, and the distance between two suspention posts 4 also can be regulated, to adapt to the testing requirements of different-diameter tubing 2.Clip 7 can be take pin 9 and is rotated as rotating shaft.On two pins 9, bolt hole is arranged, the bolt hole of pin 9 is aimed at clip 7 both sides bolts hole, inserts afterwards fastening bolt 8, and fastening bolt 8 has two effects: the one, make clip Shang Xia 7 two parts mutually compress, be assembled into one; The 2nd, make to assemble closed clip 7 and connect as one with pin 9, thereby make clip 7 can take in test pin 9, be rotated as axle.
If clip 7 disc minimum points are L to the distance of suspention post 4 bottoms
2, can rotate freely L for making clip 7
2value should be not less than tubing to be measured 2 diameters of 1.5 times.
For the packoff 1 of guaranteeing tubing 2 two ends can remain sealing in process of the test, tubing 2 ends should keep certain length.For the packoff 1 of guaranteeing tubing 2 two ends can remain sealing in process of the test, tubing 2 ends should keep certain length, i.e. the distance L of tubing 2 terminations and tubing 2 end clips 7
0should keep a certain higher value, if but L
0be worth excessively, when bending test is carried out, vibration and sway by a relatively large margin may occur in tubing 2 terminations, may cause that equally sealing property descends.Suggestion L
0value is taken as 2～5 times of test tubing 2 diameters.Making the distance between tubing 2 two ends clips 7 to be measured is L
1, reduce the squeezing action that two ends clip 7 is treated test tube material 2 when in tubing 2 stage casings, carrying out fatigue loading, avoid tubing 2 to be measured at two ends clip 7 constraint place failures, L
1value is taken as 4～10 times of tubing 2 diameters to be measured.
The steel wire winding complex pipe of DN200 of below take is specifically described the utility model as example.
It is 2000mm that DN200 tubing is got length, as shown in Figure 2, and clip 7 and tubing 2 termination distance L
0for 400mm, the internal diameter of clip 7 is all 200mm mutually with tubing 2, and clip 7 thickness are 10mm, and clip 7 constraints place in two ends are at a distance of L
1=1200mm.As shown in Figure 3, clip 7 is connected through the hinge with suspention post 4, and clip 7 can be at its disc axis and the determined rotation with in surface of suspention post 4 axis.Described tank 3 length are taken as 2400mm, and width is taken as 400mm, highly is taken as 1000mm.
DN200 tubing is put in clip 7, and the pin-and-hole 10 of closed clip 7 is aimed at the pin-and-hole 10 of suspension arm 11, inserts afterwards on 9, two pins 9 of pin bolt hole is arranged, and inserts afterwards fastening bolt 8.
Then just can adopt different steady temperature environment according to the different operating demand, DN200 tubing be carried out to the security performance test of crooked static load or bending fatigue load and inner pressuring load.
The cross truss bearing structure of take in above example is illustrated as example, but this patent is equally applicable to other truss-frame structures.When the test pipe length more in short-term can be only arranges single truss and plays the effect of hanging test tubing at the tank length direction, as shown in Figure 9.
Claims (8)
1. pressure-bending load proving installation in polyolefin pipe and polyolefin complex pipe, comprise for maintaining the interior pressure charger of tubing inside water pressure to be measured, and crooked charger; It is characterized in that, packoff is established at the two ends of tubing to be measured, and described interior pressure charger is connected with the packoff of an end wherein; This testing machine also comprises truss and Water Tank with Temp.-controlled, and the carrier bar of truss is positioned at Water Tank with Temp.-controlled top and in parallel; A suspention post straight down is equipped with respectively at the two ends of carrier bar, in suspention post bottom, respectively is provided with a circular clip for fixing tubing to be measured, and the connecting line in the clip center of circle is mutually vertical and coplanar with the axis of two suspention posts; On the carrier bar between two ends suspentions post, also be provided with one straight down in the middle of the suspention post, the axis of three suspention posts is coplanar, and between middle suspention post and two ends suspention post apart from equating; The bottom of middle suspention post is equipped with circular clip; The center of circle conllinear of three clips, disc are parallel to each other; Crooked charger comprises load maintainer and gearing, and gearing is arranged on truss; The clip of middle suspention post is connected with load maintainer by rod member, gearing, and load maintainer provides power to make clip drive pipe fitting to be measured and realizes the vertical direction to-and-fro movement; In described rod member, load-measuring device is housed, for recording power load or the displacement load applied; Load maintainer also connects a controller, regulates size and the loading speed of load by the control to crooked charger, and the power that bear in real time record tubing stage casing in process of the test and the displacement of generation.
2. device according to claim 1, is characterized in that, in the bottom of two ends suspention post, is oppositely arranged two suspension arms that protrude downwards, and a triangular support bracket is respectively established in its inboard; A pin-and-hole is all offered in the end of each suspension arm, and two pin-and-holes have identical internal diameter, and its center of circle conllinear and disc are parallel to each other; Set up fixture separately in the described circular clip both sides for fixing tubing to be measured, the distance between two end face is less than the spacing of two suspension arm inboards; Establish coaxial pin-and-hole on two end faces of clip fixture, its internal diameter is identical with the internal diameter of suspension arm end pin-and-hole, and realizes the installation in the suspension arm end by pin; The structure of circular clip is divided into upper and lower two parts, and two-part structure is identical and about the divisional plane symmetry; Stiff end in the clip both sides also provides vertical bolt hole, and realizes the fastening of clip and pin by set bolt.
3. device according to claim 2, is characterized in that, establishing clip disc minimum point is L to the distance of suspending the post bottom in midair
2, can rotate freely L for making clip
2value should be not less than the pipe diameter to be measured of 1.5 times.
4. according to the device described in the claims 1 to 3 any one, it is characterized in that, the end of establishing tubing to be measured is L to distance between the circular clip for fixing tubing to be measured
0, L
0value is taken as 2～5 times of pipe diameter to be measured.
5. according to the device described in the claims 1 to 3 any one, it is characterized in that, the distance of establishing between the clip of tubing to be measured two ends is L
1, reduce the squeezing action that the two ends clip is treated the test tube material when in the tubing stage casing, carrying out fatigue loading, avoid tubing to be measured at two ends clip constraint place failure, L
1value is taken as 4～10 times of pipe diameter to be measured.
6. according to the device described in the claims 1 to 3 any one, it is characterized in that, described interior pressure charger comprises water pump and controller, and controller is connected with water pump by cable, and water pump is connected with the packoff of pipe end to be measured by flexible pipe.
7. according to the device described in the claims 1 to 3 any one, it is characterized in that, the load maintainer of described crooked charger is motor or hydraulically operated equipment (HOE).
8. according to the device described in the claims 1 to 3 any one, it is characterized in that, described truss has a kind of in following structure: truss is across the top of Water Tank with Temp.-controlled and forms cross structure with carrier bar; Perhaps truss is crossed over the setting of Water Tank with Temp.-controlled length direction, and spandrel girder and truss are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320387845 CN203350135U (en) | 2013-06-30 | 2013-06-30 | Internal pressure-bending load testing device for polyolefin pipe and polyolefin composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320387845 CN203350135U (en) | 2013-06-30 | 2013-06-30 | Internal pressure-bending load testing device for polyolefin pipe and polyolefin composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203350135U true CN203350135U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320387845 Withdrawn - After Issue CN203350135U (en) | 2013-06-30 | 2013-06-30 | Internal pressure-bending load testing device for polyolefin pipe and polyolefin composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203350135U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353423A (en) * | 2013-06-30 | 2013-10-16 | 浙江大学 | Internal pressure-bending load testing apparatus for polyolefin pipe and polyolefin composite pipe |
| CN105136585A (en) * | 2015-08-14 | 2015-12-09 | 中国石油化工股份有限公司 | Testing apparatus and testing method for soft pipe aging testing |
| CN110501284A (en) * | 2019-08-30 | 2019-11-26 | 北京工业大学 | A kind of device and method for testing multiple tube bond strength under hot loading environment |
| CN113865992A (en) * | 2021-09-29 | 2021-12-31 | 沈阳工业大学 | Concrete beam carrying corrosion test device and method |
-
2013
- 2013-06-30 CN CN 201320387845 patent/CN203350135U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353423A (en) * | 2013-06-30 | 2013-10-16 | 浙江大学 | Internal pressure-bending load testing apparatus for polyolefin pipe and polyolefin composite pipe |
| CN103353423B (en) * | 2013-06-30 | 2015-04-15 | 浙江大学 | Internal pressure-bending load testing apparatus for polyolefin pipe and polyolefin composite pipe |
| CN105136585A (en) * | 2015-08-14 | 2015-12-09 | 中国石油化工股份有限公司 | Testing apparatus and testing method for soft pipe aging testing |
| CN105136585B (en) * | 2015-08-14 | 2018-01-19 | 中国石油化工股份有限公司青岛安全工程研究院 | A kind of test device and method of testing for flexible pipe burn-in test |
| CN110501284A (en) * | 2019-08-30 | 2019-11-26 | 北京工业大学 | A kind of device and method for testing multiple tube bond strength under hot loading environment |
| CN110501284B (en) * | 2019-08-30 | 2021-10-01 | 北京工业大学 | Device and method for testing bonding strength of composite pipe under thermal loading condition |
| CN113865992A (en) * | 2021-09-29 | 2021-12-31 | 沈阳工业大学 | Concrete beam carrying corrosion test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |