CN202305255U - Tester for underground pressure pipeline - Google Patents
Tester for underground pressure pipeline Download PDFInfo
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- CN202305255U CN202305255U CN2011204506349U CN201120450634U CN202305255U CN 202305255 U CN202305255 U CN 202305255U CN 2011204506349 U CN2011204506349 U CN 2011204506349U CN 201120450634 U CN201120450634 U CN 201120450634U CN 202305255 U CN202305255 U CN 202305255U
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Abstract
The utility model provides a tester for an underground pressure pipeline, which comprises a platform, wherein a framework is arranged on the platform, and the framework comprises a left vertical plate and a right vertical plate, which are arranged opposite to each other, and a horizontal plate connected with the top ends of the two vertical plates; the center of the lower side of the horizontal plate is provided with an air cylinder, the air cylinder is connected with a high-pressure air source by an air delivery pipe with a pressure adjusting valve, and a piston rod in the air cylinder penetrates through the lower end of the air cylinder and is connected with a counterforce loading plate; two pipeline fixers are respectively arranged on the left vertical plate and the right vertical plate, the two pipeline fixers correspond to each other, an air inlet hole is arranged in one of the pipeline fixers, and the air inlet hole is connected with the high-pressure air source through the air delivery pipe with the pressure adjusting valve; and a row of lifting jacks which are arranged with one another left and right is arranged on the platform under the horizontal plate, at least four lifting jacks are arranged, and the lifting jacks are symmetrically arranged left and right along the vertical axis of the air cylinder. According to the tester, the different modes of heterotaxis can be simulated, and the security feature parameters of the underground pressure pipeline can be measured based on an underground pressure pipeline test system.
Description
Technical field
The utility model belongs to underground works, pipework and municipal works technical field, relates to a kind of subsurface pressure pipeline dynamic characteristic test apparatus, and this device is used for the safety examination of subsurface pressure pipeline under the vertical deflection effect of stratum.
Background technology
Underground utilities often are described as lifeline, have highlighted its vital role in national economy and people's life.Under the background that Urbanization in China is constantly quickened; Underground utilities have become the leading role of engineering accident in the large-scale underground engineering constructions such as subway; Have a strong impact on the people's production and life; According to incompletely statistics, the economic loss that causes because of the City Buried Pipeline accident in China every year is up to 45,000,000,000 yuan; In addition; Larger hydrocarbon pipeline (such as engineerings such as transfering natural gas from the west to the east, Sino-Russian pipe layings) is when passing through growth zone, land subsidence district; Continuous accumulation along with land subsidence; The oil-gas pipeline security receives serious threat, and the long service performance that district's larger hydrocarbon pipeline is grown in how to evaluate land subsidence has become an important topic in the larger hydrocarbon pipeline construction.In sum, it is imperative to carry out under the vertical deflection effect of stratum subsurface pressure pipeline safety characteristic research.But; At present Chinese scholars only limits to the Theoretical Calculation that combines based on theory of elasticity and sedimentation development model for the research of subsurface pressure pipeline under the vertical deflection effect of stratum; And the actual grave fault of theoretical model assumed condition and engineering (for example, ignore pipeline rigidity, think pipeline and surrounding soil compatible deformation); Lack effective research technique and verify and improve existing theoretical result, perhaps new thinking is provided for the research of subsurface pressure pipeline under the vertical deflection effect of stratum.
The utility model content
Technical matters:The utility model provides a kind of subsurface pressure pipeline test unit that can truly reflect the subsurface pressure pipeline safety characteristic under the vertical deflection effect of stratum intuitively.
Technical scheme:The subsurface pressure pipeline test unit of the utility model, the platform of device is provided with framework, and said framework comprises left riser and the right riser that is oppositely arranged, and connects the leveling board on said two riser tops;
Said leveling board downside center is provided with cylinder, and said cylinder is connected with high-pressure air source through the gas piping that is provided with pressure regulator valve, and the piston rod in the cylinder passes the cylinder lower end, and the lower end of said piston rod is connected with the counter-force load plate;
Respectively be provided with a pipeline stationary installation on left side riser, the right riser, two pipeline stationary installations are corresponding, and one of them pipeline stationary installation is provided with air admission hole, and said air admission hole is connected with high-pressure air source through the gas piping that is provided with pressure regulator valve;
Platform below the leveling board is provided with the lifting jack of arranging about a row, and said lifting jack is at least four, arranges along the vertical axis left-right symmetric of cylinder.
In the utility model, the pipeline stationary installation is the pipe box of end sealing, and said pipe box week upwards evenly is provided with 2 ~ 5 and has the pipeline set bolt that scale indicates.
In the utility model, the upside of counter-force load plate is connected with the lower end of piston rod, and downside is the concave surface that matees with the test pipe outer wall.
The experimental provision of the utility model can be divided into three parts by function and structure: heterotaxis simulation system, line pressure loading system and test macro.
(1) heterotaxis simulation system.The heterotaxis simulation system mainly is made up of the lifting jack of a plurality of (minimum 4) diverse location, simulates different strata vertical deflection pattern through speed and the stroke that lifting jack advances is set.Must the deflection of each lifting jack be calculated according to preset heterotaxis pattern accurately before the test, to guarantee accuracy the heterotaxis state simulation.
(2) line pressure loading system.The landfill degree of depth of underground utilities is different, and its suffered terrestrial stress is just different, though also inevitable different in same formation displacement pattern underground pipelines change of mechanical property rule, so the different landfill degree of depth of simulate formation pipeline are very important.The utility model utilizes the counter-force loading frame to combine air pressure loading device to realize the simulation to the different landfill degree of depth of pipeline; The pipeline stiff end is welded on the counter-force loading frame; Through the screw fixing test pipeline on the pipeline stiff end; The adjustable extent of testing conduit diameter is 100mm ~ 1100mm, and this scope has contained the diameter of underground utilities and larger hydrocarbon pipeline in the municipal works basically.Feeder adopts high-pressure air source, and to the charger air feed, the charger applied pressure is simulated the pipeline landfill degree of depth to pipeline to be measured through pressure regulator valve control supply gas pressure.Feeder also provides pressure in pipeline to be measured, with the sealing of test pipe both sides, through gas piping air pressure is applied in the pipeline with simulation pipeline internal pressure.Consider the experimental safe problem, the maximum supply gas pressure of this test unit is 2MPa.。
(3) test macro comprises the multiple surveying instrument that is installed on the pipeline to be measured; Test event comprises: the strain of pipeline (horizontal and vertical), the displacement of pipeline and the variation of pipe diameter, corresponding testing tool is respectively laterally and longitudinal strain meter, dial gauge and axial extensometer.Each testing tool is linked to each other with computing machine, gather to realize that data are uninterrupted automatically.
Beneficial effect:It is main that the utility model has been broken through under the present heterotaxis pattern in the research of underground utilities security feature with theoretical model research; But the quagmire of theoretical model assumed condition and engineering grave fault; Developed a kind of subsurface pressure pipeline test unit that can simulate various operating modes such as Different Strata displacement pattern, different pipeline depth of burial, different pipeline diameter, different tubing; From the stress under the heterotaxis pattern and the development of deformation rule of the angle analysis underground utilities of model test, filled up subsurface pressure pipeline blank aspect the security feature test unit under the heterotaxis effect.
The utility model is through different distributions position lifting jack, and the deflection of adjustment lifting jack is realized different strata vertical deflection pattern, observes the distortion of subsurface pressure pipeline and the variation of internal force simultaneously, reaches the purpose of differentiating the underground utilities security feature.Test pipe stationary installation in the utility model is the effective stress state of fixed-piping simulation pipeline when being connected with pumping plant not only; And can adapt to different test pipe diameters through adjusting screw adjustment size, guarantee that this testing equipment has stronger compatibility.The utility model test unit can truly reflect the influence of heterotaxis to subsurface pressure pipeline ability intuitively; For the security feature of research subsurface pressure pipeline, propose practicable underground utilities reinforcement measure and created advantage, for theoretical research and practical applications provide solid foundation and support.
Description of drawings
Fig. 1 is the structural representation of the utility model test unit;
Fig. 2 is the side structure synoptic diagram of the utility model test unit;
Fig. 3 is the structural representation of pipeline stationary installation.
Have among the figure: left riser 1, right riser 2, platform 3, leveling board 4, cylinder 5, piston rod 6, counter-force load plate 7, pipeline stationary installation 8, lifting jack 9, high-pressure air source 10, gas piping 11, pressure regulator valve 12, air admission hole 13, pipeline set bolt 14, test pipe 15, longitudinal strain meter 16, transverse strain meter 17, dial gauge 18, axially extensometer 19, lifting jack pickup groove 20.
Embodiment
The subsurface pressure pipeline test unit of the utility model, the platform 3 of device is provided with framework, and framework comprises the left riser 1 and right riser 2 that is oppositely arranged, and connects the leveling board 4 on said two riser tops; Leveling board 4 downside centers are provided with cylinder 5, and said cylinder 5 is connected with high-pressure air source 10 through the gas piping 11 that is provided with pressure regulator valve 12, and the piston rod 6 in the cylinder 5 passes cylinder 5 lower ends, and the lower end of said piston rod 6 is connected with counter-force load plate 7; The upside of counter-force load plate 7 is connected with the lower end of piston rod 6, and downside is the concave surface that matees with test pipe 15 outer walls.
Respectively be provided with a pipeline stationary installation 8 on left side riser 1, the right riser 2; Pipeline stationary installation 8 is the pipe box of end sealing; Pipe box week upwards evenly be provided with 2 ~ 5 and have the pipeline set bolt 14 that scale indicates; Two pipeline stationary installations 8 are corresponding, and one of them pipeline stationary installation 8 is provided with air admission hole 13, and said air admission hole 13 is connected with high-pressure air source 10 through the gas piping 11 that is provided with pressure regulator valve 12; Platform 3 below the leveling board 4 is provided with the lifting jack of arranging about a row 9, and lifting jack 9 is at least four, arranges along the vertical axis left-right symmetric of cylinder 5, and lifting jack 9 is installed in 20 li of the lifting jack pickup grooves that are provided with on the platform 3.
The concrete working method and the process of the utility model are following:
1. test pipe is installed and the testing apparatus layout
At first equidistantly arrange longitudinal strain meter 16 and transverse strain meter 17 in test pipe 15 outsides: longitudinal strain meter 16 is arranged is spaced apart 0.1 ~ 0.5D (D is a pipe diameter, confirms according to the size of pipe diameter at interval); The arrangement interval of transverse strain meter 17 is that diameter is during less than 500mm per 60
oOne, during greater than 500mm per 45
oOne.Then test pipe 15 is fixed on the pipeline stationary installation 8, tightens pipeline fixed screw 14 fixation test pipelines 15.To extensometer 19, and place 18 some of dial gauges in test pipe 15 mid point disposed axle at the diverse location of pipeline.Data line with all testing apparatuss links to each other with computing machine at last.
2. installation lifting jack
Lifting jack 9 is put into lifting jack pickup groove 20, and lifting lifting jack 9 contacts with test pipe 15.
3. start high-pressure air source 10, respectively to cylinder 5 and test pipe 15 air feed
Start high-pressure air source 10, according to regulating pressure regulator valve 12, to cylinder 5 air feed with the depth of burial equivalent load; Promote piston 6 and exert pressure, meanwhile open the air admission hole 13 of test pipe and carry air pressure to test pipe 15 according to the predetermined internal pressure power in the test prediction scheme to test pipe 15;
4. start lifting jack 9 and descend, and open scope simultaneously, the record test figure
According to the heterotaxis pattern in the testing program slippage of diverse location place lifting jack 9 is set, controls its decline rate simultaneously and avoid causing the test pipe stress raisers; Open the reading of each scope of data acquisition system (DAS) record.
Claims (3)
1. a subsurface pressure pipeline test unit is characterized in that, the platform of this device (3) is provided with framework, and said framework comprises left riser (1) and the right riser (2) that is oppositely arranged, and connects the leveling board (4) on said two riser tops;
Said leveling board (4) downside center is provided with cylinder (5); Said cylinder (5) is connected with high-pressure air source (10) through the gas piping (11) that is provided with pressure regulator valve (12); Piston rod (6) in the cylinder (5) passes cylinder (5) lower end, and the lower end of said piston rod (6) is connected with counter-force load plate (7);
Respectively be provided with a pipeline stationary installation (8) on left side riser (1), the right riser (2); Two pipeline stationary installations (8) are corresponding; One of them pipeline stationary installation (8) is provided with air admission hole (13), and said air admission hole (13) is connected with high-pressure air source (10) through the gas piping (11) that is provided with pressure regulator valve (12);
The platform (3) of leveling board (4) below is provided with the lifting jack of arranging about a row (9), and said lifting jack (9) is at least four, arranges along the vertical axis left-right symmetric of cylinder (5).
2. subsurface pressure pipeline test unit according to claim 1 is characterized in that, described pipeline stationary installation (8) is the pipe box of end sealing, and said pipe box week upwards evenly is provided with 2 ~ 5 and has the pipeline set bolt (14) that scale indicates.
3. subsurface pressure pipeline test unit according to claim 1 is characterized in that, the upside of described counter-force load plate (7) is connected with the lower end of piston rod (6), and downside is the concave surface that matees with test pipe (15) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204506349U CN202305255U (en) | 2011-11-15 | 2011-11-15 | Tester for underground pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204506349U CN202305255U (en) | 2011-11-15 | 2011-11-15 | Tester for underground pressure pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305255U true CN202305255U (en) | 2012-07-04 |
Family
ID=46374127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204506349U Expired - Fee Related CN202305255U (en) | 2011-11-15 | 2011-11-15 | Tester for underground pressure pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401749A (en) * | 2011-11-15 | 2012-04-04 | 东南大学 | Testing device of underground pressure pipeline |
-
2011
- 2011-11-15 CN CN2011204506349U patent/CN202305255U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401749A (en) * | 2011-11-15 | 2012-04-04 | 东南大学 | Testing device of underground pressure pipeline |
| CN102401749B (en) * | 2011-11-15 | 2013-12-04 | 东南大学 | Testing device of underground pressure pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20131115 |