CN203595641U - Compound pipeline shearing strength testing device - Google Patents
Compound pipeline shearing strength testing device Download PDFInfo
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- CN203595641U CN203595641U CN201320825388.XU CN201320825388U CN203595641U CN 203595641 U CN203595641 U CN 203595641U CN 201320825388 U CN201320825388 U CN 201320825388U CN 203595641 U CN203595641 U CN 203595641U
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Abstract
The utility model relates to a compound pipeline shearing strength testing device. The compound pipeline shearing strength testing device comprises a shearing double-ring plate, a fixing iron ring and a plurality of hydraulic cylinders, wherein the shearing double-ring plate is of an opening and closing type structure, a multi-step hole is formed in the center of the shearing double-ring plate, the fixing iron ring is an opening and closing type annular plate, the hydraulic cylinders are arranged on the fixing iron ring in an annular mode, the free ends of the hydraulic cylinders abut against the shearing double-ring plate, and pressure testing devices are arranged on the hydraulic cylinders. The compound pipeline shearing strength testing device is easy to operate and small in occupied area and can be operated outdoors.
Description
Technical field
The utility model relates to testing device for shear strength, particularly relates to a kind of compound pipeline complex pipeline testing device for shear strength.
Background technology
Along with scientific and technical development, central heating in region, cooling become heat supply, the cooling form of current main flow, thereby the appearance of the heat-preserving composite pipeline of trinity structure (outer pillar, heat-insulation layer, working steel tube) greatly reduces the loss of energy in transmitting procedure.
Nowadays along with the development of urbanization constantly expands, also expand gradually for the demand of heat-preserving composite pipeline, the heat-preserving composite pipeline quality detection apparatus arising at the historic moment is also in constantly more new development.
But, a kind of vertical pressure test with regard to current heat-preserving composite pipeline testing device for shear strength, need to be vertical test compound pipeline being placed on pressure testing machine, because the external diameter of compound pipeline complex pipeline is not of uniform size, thereby needed pressure testing machine is very huge, price is high, floor area is large and can not move, and test compound pipeline itself is because vertical placement test, working steel tube dead weight has just been brought the inaccuracy of measurement itself, and the preparation of laboratory sample needs the two ends of sample own vertical with compound pipeline complex pipeline axis according to right parallel and port, preparation for laboratory sample requires very high.Testing requirement for special: the compound pipeline complex pipeline that the heat-preserving composite pipeline that detection has been installed or length reach more than 3m has no idea to detect.
Summary of the invention
Because the existing defect of above-mentioned prior art, the purpose of this utility model is, provides a kind of simple to operate, and floor area is little, compound pipeline complex pipeline testing device for shear strength that can field work.
To achieve these goals, according to a kind of compound pipeline complex pipeline testing device for shear strength the utility model proposes, it comprises: shearing dual collar plate, is retractable structure, and center is provided with multi-stage stairs hole; Fixing iron hoop is open-close type annular slab; And multiple hydraulic cylinders, annular is arranged on this fixing iron hoop, and the free end of described multiple hydraulic cylinders is towards this shearing dual collar plate; On described hydraulic cylinder, be provided with pressure-detecting device.
The utility model also can be applied to the following technical measures to achieve further.
Aforesaid compound pipeline complex pipeline testing device for shear strength, it also comprises sawtooth iron plate ring, is connected to the opposing face of fixing this hydraulic cylinder of this fixing iron hoop.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said shearing dual collar plate comprises two and half ring flat-plates, and a contact jaw of this two and half ring flat-plate is pivotally connected, and another contact jaw connects with fixed head.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said fixing iron hoop comprises two semi arch plates, these two semi arch plates interconnect with arc fixed iron piece; This fixing iron hoop is welded with the hydraulic cylinder fastening base for fixing this hydraulic cylinder.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said sawtooth iron plate ring is step ring, the internal diameter difference of every grade of ring.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said sawtooth iron plate ring, comprises that a side is that annular cover and the uniform welding of opening overlaps multiple butt pieces of a side in annular.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said multiple hydraulic cylinders are three to eight.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said multiple hydraulic cylinders are six.
Aforesaid compound pipeline complex pipeline testing device for shear strength, wherein said pressure-detecting device is tensimeter or pressure transducer.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme, compound pipeline complex pipeline testing device for shear strength of the present utility model, at least has following advantages:
One. compound pipeline complex pipeline testing device for shear strength of the present utility model, can detect the compound pipeline complex pipeline shear strength at any place of having welded, convenient, flexible.
Two. compound pipeline complex pipeline testing device for shear strength of the present utility model, can detect the compound pipeline complex pipeline shear strength of operation a period of time, and need not entirety break the compound pipeline complex pipeline system of changing, the polyurethane foam destroying can be sent out full outer welding hot melt oversleeve or thermal shrinkage oversleeve is installed with mould foaming, does not affect the operation of compound pipeline complex pipeline.
Three. compound pipeline complex pipeline testing device for shear strength method of the present utility model, simple to operate, do not need large-scale detecting instrument, floor area is little.
Four. compound pipeline complex pipeline testing device for shear strength of the present utility model, only need to detect the corresponding jig external diameter of compound pipeline complex pipeline and the jig of internal diameter, without laboratory operation again.Field project installation is completely applicable.
Five. compound pipeline complex pipeline testing device for shear strength of the present utility model, can independent measurement polyurethane foam and working steel tube between shear resistance, also can independent measurement polyurethane foam and outer jacket between shear resistance, also can measure by two shear strengths simultaneously simultaneously.
Accompanying drawing explanation
Fig. 1 is the use view of the utility model compound pipeline complex pipeline testing device for shear strength preferred embodiment.
Fig. 2 is the schematic perspective view of the shearing dual collar plate of the utility model compound pipeline complex pipeline testing device for shear strength preferred embodiment.
Fig. 3 is the schematic perspective view that the hydraulic cylinder of the utility model compound pipeline complex pipeline testing device for shear strength preferred embodiment is installed on fixing iron hoop.
Fig. 4 is the schematic perspective view of the sawtooth iron plate ring of the utility model compound pipeline complex pipeline testing device for shear strength preferred embodiment.
Embodiment
Technological means and effect of taking for reaching predetermined goal of the invention for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of compound pipeline complex pipeline testing device for shear strength according to the utility model proposes, step, structure, feature and effect thereof are described in detail.
Compound pipeline complex pipeline 10 described in this case comprises working steel tube 11 and is coated at least one deck composite bed 13,15 in working steel tube 11 outsides.Composite bed is for example heat-insulation layer 13, thermofin or outer pillar 15.
These described compound pipeline complex pipeline 10 shear resistances refer to the axial shear resistance of the each interlayer of compound pipeline complex pipeline 10.
Referring to shown in Fig. 1, is the use view of the utility model compound pipeline complex pipeline testing device for shear strength preferred embodiment.The testing device for shear strength of the utility model preferred embodiment, comprises, shears dual collar plate 4, fixing iron hoop 5 and multiple hydraulic cylinder 7.Multiple hydraulic cylinder 7 annulars are arranged on fixing iron hoop 5, and the free end of hydraulic cylinder 7 is towards this shearing dual collar plate 4.
This shearing dual collar plate 4 is retractable structure.This shearing dual collar plate 4 comprises that a contact jaw pivot 43 of 41, two half ring flat-plates 41 of two and half ring flat-plates connects, and another contact jaw connects with fixed head 45.These shearing dual collar plate 4 centers are provided with coaxial multi-stage stairs hole 47, are two-stage stepped hole in the present embodiment, and diameter holes is corresponding to the external diameter of the working steel tube 1 of tested compound pipeline complex pipeline 10, and secondary apertures is corresponding to the external diameter of the outer pillar 15 of tested compound pipeline complex pipeline 10.In other embodiments, this multi-stage stairs hole 47 can be 3 grades or 4 grades of stepped holes, and every grade of circular hole aperture is corresponding to the external diameter of the different composite layer of tested complex pipe 10.
This fixing iron hoop 5 is retractable structure, comprises that 51, two semi arch plates 51 of two semi arch plates rely on arc fixed iron piece 53 use bolts 55 fastening.Two semi arch plates 51 connections tighten together, and form a pertusate iron hoop in inside, and inner void diameter is greater than the working steel tube 11 of detected compound pipeline complex pipeline 10.On this fixing iron hoop 5, be on average welded with six hydraulic cylinder fastening bases 57,57 one-tenth " 7 " fonts of each hydraulic cylinder fastening base, inner hollow is used for fastening hydraulic cylinder 7, and with the fastening hydraulic cylinder 7 being placed in fastening base 57 of hydraulic cylinder fastening bolt 59.The one side of not welding fastening base 57 of this fixing iron hoop 5 is for being connected to a side otch end face of detected compound pipeline complex pipeline 10.
These hydraulic cylinder 7 annulars are arranged on this fixing iron hoop 5, at least one hydraulic cylinder 7, are provided with tensimeter or pressure transducer.In the present embodiment, be to be provided with tensimeter on each hydraulic cylinder.In this example, being provided with six hydraulic cylinders 7, can be three, four, five or five hydraulic cylinders in other embodiments.
Compound pipeline complex pipeline 10 testing device for shear strengths of the present embodiment, can also comprise sawtooth iron plate ring 6, and this sawtooth iron plate ring 6 is connected to immobile liquid cylinder pressure 7 opposing faces of fixing iron hoop 5.This sawtooth iron plate ring 6 is step ring, the internal diameter difference of every grade of ring.This sawtooth iron plate ring 6, comprises that a side is the annular cover 61 of opening and the uniform welding multiple butt pieces 63 in annular cover 61 1 sides; This annular cover 61 can overlap pillar 15 outsides outside, relies on fastening bolt 65 fastening; This butt piece 63 can be overlapped on outer pillar 3 end faces that are detected compound pipeline complex pipeline 10 otch and not be overlapped on heat-insulation layer 2 end faces.
Refer to Fig. 1, when compound pipeline complex pipeline 10 testing device for shear strengths of the present utility model use, first tested compound pipeline complex pipeline 10 is cut out to a kerf, the composite bed of compound pipeline complex pipeline 10 is removed, in this example, be that polyurethane foam 13, outer jacket 15 are removed, expose working steel tube 11.Usage level chi when compound pipeline complex pipeline 10 excises otch, guarantees the axial vertical of the otch of excision and the compound pipeline complex pipeline of test.Service precision is the length that the ruler of 0.01mm is measured otch, prolongs hoop measurement number of times and is no less than 3 times, and the deviation of the length of each measurement result and setting is in 0.1cm.Requiring the incision length of excision is 28cm.The PUR froth bed of the otch end face after otch uses scraper polishing, so that otch is smooth.
Then, shearing dual collar plate 4 is opened and is enclosed within outside working steel tube 11 and closes tightly, will shear dual collar plate 4 butts left side composite bed end faces.
Afterwards, will fix iron hoop 5 and open that to be enclosed within working steel tube 1 outer and close tightly, will fix iron hoop 5 plate face butt right side composite bed end faces.
Afterwards, six hydraulic cylinder 7 one end are fixed on fixing iron hoop 5, and free end is connected to shears 4 of dual collar plates.And tester: open pressure transducer and determine that the pressure sensor readings of each hydraulic cylinder 7 is zero.The manometric pointer of readable pressure release of hydraulic pump is pulled back to 0 place.The transmission switch of all hydraulic cylinder is opened in start, and the unlatching size of transmission switch is all identical, and the size of unlatching is 60%.Determine each all identical 10cm of being of the length that hydraulic cylinder works is normal and hydraulic cylinder extended in same time 30s that open all unlatchings of hydraulic pump.Tester repeats 3 times.
Finally, power source (as, hydraulic pump, scheme not shown) driving under, keep the thrust of each hydraulic cylinder 7 to increase progressively identical, manometric force value while reading delamination between polyurethane foam 2 and working steel tube 1, or between test polyurethane foam 2 and working steel tube 1, whether shear resistance meets predetermined strength.
After reading force value, calculate shear resistance according to following formula 1:
τ=F/L* π * D formula 1
In formula 1:
τ---axially shear resistance, unit is MPa (MPa);
F---the power axially applying, unit is ox (N);
The length of L---bonding plane, unit is millimeter (mm);
D---diameter or the external diameter of the shear surface of surveying, unit is millimeter (mm)
In addition, when use, can also be in above-mentioned example, sawtooth iron plate ring 6 is set between fixing iron hoop 5 and right side composite bed end face, for testing the shear resistance between outer pillar 15 and polyurethane foam 13.
One. compound pipeline complex pipeline testing device for shear strength of the present utility model, can detect the compound pipeline complex pipeline shear strength at any place of having welded, convenient, flexible.
Two. compound pipeline complex pipeline testing device for shear strength of the present utility model, can detect the compound pipeline complex pipeline shear strength of operation a period of time, and need not entirety break the compound pipeline complex pipeline system of changing, the polyurethane foam destroying can be sent out full outer welding hot melt oversleeve or thermal shrinkage oversleeve is installed with mould foaming, does not affect the operation of compound pipeline complex pipeline.
Three. compound pipeline complex pipeline testing device for shear strength of the present utility model, simple to operate, do not need large-scale detecting instrument, floor area is little.
Four. compound pipeline complex pipeline testing device for shear strength of the present utility model, only need to detect the corresponding jig external diameter of compound pipeline complex pipeline and the jig of internal diameter, without laboratory operation again, field project installation is completely applicable.
Five. compound pipeline complex pipeline testing device for shear strength of the present utility model, can independent measurement polyurethane foam and working steel tube between shear resistance, also can independent measurement polyurethane foam and outer jacket between shear resistance, also can measure by two shear strengths simultaneously simultaneously.
Although the utility model discloses as above with preferred embodiment, the scope of so not implementing in order to limit the utility model, the simple equivalence of doing according to claims of the present utility model and description changes and modifies, and still belongs in the scope of technical solutions of the utility model.
Claims (10)
1. a compound pipeline complex pipeline testing device for shear strength, is characterized in that it comprises:
Shearing dual collar plate, is retractable structure, and center is provided with multi-stage stairs hole;
Fixing iron hoop is open-close type annular slab; And
Multiple hydraulic cylinders, annular is arranged on this fixing iron hoop, and the free end of described multiple hydraulic cylinders is towards this shearing dual collar plate; On described hydraulic cylinder, be provided with pressure-detecting device.
2. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that it also comprises sawtooth iron plate ring, is connected to the opposing face of fixing this hydraulic cylinder of this fixing iron hoop.
3. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that wherein said shearing dual collar plate comprises two and half ring flat-plates, and a contact jaw of this two and half ring flat-plate is pivotally connected, and another contact jaw connects with fixed head.
4. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that wherein said fixing iron hoop comprises two semi arch plates, and these two semi arch plates interconnect with arc fixed iron piece; This fixing iron hoop is welded with the hydraulic cylinder fastening base for fixing this hydraulic cylinder.
5. compound pipeline complex pipeline testing device for shear strength as claimed in claim 2, is characterized in that wherein said sawtooth iron plate ring is step ring, the internal diameter difference of every grade of ring.
6. compound pipeline complex pipeline testing device for shear strength as claimed in claim 5, is characterized in that wherein said sawtooth iron plate ring, comprises that a side is that annular cover and the uniform welding of opening overlaps multiple butt pieces of a side in annular.
7. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that wherein said multiple hydraulic cylinders are three to eight.
8. compound pipeline complex pipeline testing device for shear strength as claimed in claim 7, is characterized in that wherein said multiple hydraulic cylinders are six.
9. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that wherein said pressure-detecting device is tensimeter or pressure transducer.
10. compound pipeline complex pipeline testing device for shear strength as claimed in claim 1, is characterized in that wherein said compound pipeline complex pipeline comprises working steel tube and is coated at least one deck composite bed in working steel tube outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825388.XU CN203595641U (en) | 2013-12-13 | 2013-12-13 | Compound pipeline shearing strength testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825388.XU CN203595641U (en) | 2013-12-13 | 2013-12-13 | Compound pipeline shearing strength testing device |
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| CN203595641U true CN203595641U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825388.XU Withdrawn - After Issue CN203595641U (en) | 2013-12-13 | 2013-12-13 | Compound pipeline shearing strength testing device |
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| CN (1) | CN203595641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674735A (en) * | 2013-12-13 | 2014-03-26 | 北京豪特耐管道设备有限公司 | Test device for shear strength of composite pipe and test method |
| CN114166657A (en) * | 2021-11-22 | 2022-03-11 | 蚌埠市特种设备监督检验中心 | Device and method for testing shear strength of composite pipeline |
-
2013
- 2013-12-13 CN CN201320825388.XU patent/CN203595641U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674735A (en) * | 2013-12-13 | 2014-03-26 | 北京豪特耐管道设备有限公司 | Test device for shear strength of composite pipe and test method |
| CN103674735B (en) * | 2013-12-13 | 2016-01-06 | 北京豪特耐管道设备有限公司 | Device for shear strength of composite pipe and method of testing |
| CN114166657A (en) * | 2021-11-22 | 2022-03-11 | 蚌埠市特种设备监督检验中心 | Device and method for testing shear strength of composite pipeline |
| CN114166657B (en) * | 2021-11-22 | 2023-07-25 | 蚌埠市特种设备监督检验中心 | Device and method for testing shear strength of composite pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiaofei Inventor after: Cai Neng Inventor before: Zhang Xiaofei Inventor before: Cai Neng |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |