CN2150552Y - Internal-pressure creep testing device for plastic tube - Google Patents
Internal-pressure creep testing device for plastic tube Download PDFInfo
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- CN2150552Y CN2150552Y CN 93208364 CN93208364U CN2150552Y CN 2150552 Y CN2150552 Y CN 2150552Y CN 93208364 CN93208364 CN 93208364 CN 93208364 U CN93208364 U CN 93208364U CN 2150552 Y CN2150552 Y CN 2150552Y
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- pressure
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Abstract
The utility model relates to an internal-pressure creep testing device for plastic pipes, especially a hydraulic pressure testing device. The utility model comprises a pressure pump (1), a unidirectional valve (2), a liquid storage tank (3), a stop valve (4), a pressure gauge (5), a pressure-reducing valve (6), a precision pressure gauge (7), an electromagnetic valve (8), a pressure gauge with electric contacts (9), a timer (10), a water tank with the constant temperature (11) and a simple sealing and clamping device (12). The utility model is characterized in that the pressure pump adopts a single-screw pump with double stages; the liquid storage tank adopts a bag-type energy storage tank; the water tank with the constant temperature adopts an inner layer (13) and an outer layer (14) to keep the temperature constant; the sealing and clamping device adopts connecting rod combined clamps; sealing covers are changed and are matched with the samples with different pipe diameters. The utility model is widely used for testing the static pressure strength of the pipe sections.
Description
The utility model relates to a kind of pressure experimental device, particularly tubing water test unit that is produced by hydraulic pressure.
Plastic pipe must be known its basic physical and mechanical property as a big series products of building materials when selecting plastic pipe for use, the data extrapolation that obtains by long-term hydrostatic test obtains long-term isostatic pressing strength usually.The isostatic pressing strength of plastic pipe is not only the foundation of design, also by the basis of producer as the tubing classification.
Plastic pipe internal pressure creep test is that tubing is placed in the middle of the uniform temperature environment, fill in the tubing with constant water pressure, when sample when certain hour breaks, note time to rupture automatically.
Present this test unit mainly is made up of air compressor, aerodynamic force pump, pot for storing up liquid, Water Tank with Temp.-controlled, electro connecting pressure gauge, solenoid valve, timer and sample clamp.Major defect is that pressure transient, noise are big, calibration cell adopts the monolayer material insulation, and heat insulation effect is poor, sample clamp complex structure, the difficult installation, and often leak.
The purpose of this utility model is the flat title of a kind of pressure of design, sample clamp does not leak and the plastic pipe internal pressure creep test unit of calibration cell high insulating effect.
The utility model is achieved in that on the basis of existing plastic pipe internal pressure creep test unit and improves.Adopting secondary list sieve bar pump is pressure source, and hydraulic pressure directly is provided, and removes air compressor from; Pot for storing up liquid adopts oil field NXQ type capsule formula energy storage tank.But capsule formula energy storage tank be a kind of in hydraulic system storage power, steady pressure, the compensation or absorption pressure.Energy storage tank is an autoclave, in jar a leather bag is arranged, and fills air or nitrogen in the capsule, and a jar bottom water-filling is pressed.When water pressure was higher than air pressure, gas was compressed in the leather bag, when external pressure hour, and the gas outside ftercompction of expanding.
Water Tank with Temp.-controlled adopts complex heat-preservation, is divided into inside and outside two-layer insulation, outer material with high insulating effect, and internal layer is with high temperature resistant and ageing-resistant material; Sealing clamp is designed to the connecting rod assembly anchor clamps, and it is made up of seal head, connecting link and necking down screw rod.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
Fig. 1 the utility model embodiment synoptic diagram.
Fig. 2 sample assembling sealing clamp sectional view.
Referring to Fig. 1, a kind of plastic pipe internal pressure creep test unit, comprise forcing pump (1), retaining valve (2), pot for storing up liquid (3), stop valve (4), tensimeter (5), reduction valve (6), precision pressure gauge (7), solenoid valve (8), electro connecting pressure gauge (9), timer (10), Water Tank with Temp.-controlled (11) and sample sealing clamp (12) composition, it is characterized in that forcing pump adopts twin-stage list sieve bar pump, pot for storing up liquid adopts capsule formula energy storage tank, and Water Tank with Temp.-controlled adopts internal layer (13), outer (14) double-layer heat insulation.
The course of work: twin-stage single-screw (single screw) pump (1) is as the pressure source of system, hydraulic pressure enters energy storage tank (3) pressurization through retaining valve (2), after reduction valve (6) and precision pressure gauge (7) pressure regulation, arrive the end of going into of solenoid valve (8) by stop valve (4) and retaining valve (2), its output terminal connects test specimen (25), provides certain hydraulic pressure to sample.Electro connecting pressure gauge (9), solenoid valve (8) and timer (10) are finished automatic ftercompction and are clocked.The reading of tensimeter (5) should be higher than the pressure of precision pressure gauge (7) in the middle of the test, and a little more than the required test pressure of sample.When actual pressure in the sample was lower than the required test pressure of test, solenoid valve (8) was opened, and begins to the sample ftercompction, and solenoid valve when the sample internal pressure reaches predetermined value (8) cuts out, and keeps the sample internal pressure constant like this.
Water Tank with Temp.-controlled heat-insulation layer, internal layer thick perlite of 50mm or sheet asbestos, outer with 50mm thick polystyrene plate or polyurethane foaming plate.
Referring to Fig. 2, the sample sealing clamp is made up of gland bonnet (15), O-ring seal (16), connecting link (17), last necking down screw rod (18), following necking down screw rod (19), pad (20) and nut (21), wherein gland bonnet (15) is the circular lid of a band mesopore, have circular groove (22) on its madial wall, O-ring seal is placed in the groove; The connecting link two ends are provided with external thread; The end that last necking down screw rod is thicker has tapped hollow hole and side opening (24), and the hollow hole aperture is identical with the connecting link footpath, has hollow hole (23) in the middle of the thinner end, and screw rod also is provided with external thread outward; The end that following necking down screw rod is thicker has tapped hollow hole, and the aperture is identical with the connecting link footpath, and a thinner end is provided with external thread; The connecting link two ends screw in respectively in the necking down screw rod hollow hole, and a gland bonnet respectively is installed up and down, screw with nut behind the placement pad.When the sample of different tube diameters was tested, the gland bonnet that only needs to change different size got final product.
Through improved device, overcome pressure instability, the problem that heat insulation effect difference and anchor clamps leak.The utility model provide a hydraulic pressure steadily, pressure gathers way soon, cost is low, high insulating effect, and do not have leakage.Be specially adapted to carry out the long-term hydrostatic test of tubing under the high temperature.
In this enforcement, tested sample can a plurality ofly carry out simultaneously, promptly places a plurality of samples in Water Tank with Temp.-controlled.
Claims (3)
1, a kind of plastic pipe internal pressure creep test unit, comprise forcing pump (1), retaining valve (2), pot for storing up liquid (3), stop valve (4), tensimeter (5), reduction valve (6), precision pressure gauge (7), solenoid valve (8), electro connecting pressure gauge (9), timer (10), Water Tank with Temp.-controlled (11) and sample sealing clamp (12) composition, it is characterized in that forcing pump adopts twin-stage list sieve bar pump, pot for storing up liquid adopts capsule formula energy storage tank, and Water Tank with Temp.-controlled adopts internal layer (13), outer (14) double-layer heat insulation.
2, by the described plastic pipe internal pressure creep of claim 1 test unit, it is characterized in that the Water Tank with Temp.-controlled heat-insulation layer, internal layer thick perlite of 50mm or sheet asbestos, outer with 50mm thick polystyrene plate or poly-nitrogen fat foaming plate.
3, by the described plastic pipe internal pressure creep of claim 1 test unit, it is characterized in that the sample sealing clamp by gland bonnet (15), O-ring seal (16), connecting link (17), go up necking down screw rod (18), necking down screw rod (19), pad (20) and nut (21) are formed down, wherein gland bonnet (15) is the circular lid of a band mesopore, have circular groove (22) on its madial wall, O-ring seal is placed in the groove; The connecting link two ends are provided with external thread; The end that last necking down screw rod is thicker has tapped hollow hole and side opening (24), and the hollow hole aperture is identical with the connecting link footpath, has hollow hole (23) in the middle of the thinner end, and screw rod also is provided with external thread outward; The end that following necking down screw rod is thicker has tapped hollow hole, and the aperture is identical with the connecting link footpath, and a thinner end is provided with external thread; The connecting link two ends screw in respectively in the necking down screw rod hollow hole, are placed in the sample tubing, and a gland bonnet respectively is installed up and down, screw with nut behind the placement pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208364 CN2150552Y (en) | 1993-04-08 | 1993-04-08 | Internal-pressure creep testing device for plastic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208364 CN2150552Y (en) | 1993-04-08 | 1993-04-08 | Internal-pressure creep testing device for plastic tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2150552Y true CN2150552Y (en) | 1993-12-22 |
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ID=33790840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93208364 Expired - Fee Related CN2150552Y (en) | 1993-04-08 | 1993-04-08 | Internal-pressure creep testing device for plastic tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2150552Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614726A (en) * | 2009-07-20 | 2009-12-30 | 大连标准检测技术研究中心 | Device for detecting migration volume of chemical substances in the packaging material for food |
| CN102426142A (en) * | 2011-09-14 | 2012-04-25 | 西安石油大学 | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing |
| CN102112858B (en) * | 2008-08-08 | 2012-11-14 | 原子能和替代能源委员会 | Test machine for applying uniform internal pressure on a tube |
| CN103048200A (en) * | 2012-09-18 | 2013-04-17 | 青岛宇通管业有限公司 | Use method of hydrostatic bursting test machine for pipes |
| CN103048201A (en) * | 2012-09-18 | 2013-04-17 | 青岛宇通管业有限公司 | Hydrostatic bursting test machine for pipes |
| CN104849149A (en) * | 2015-05-19 | 2015-08-19 | 中国海洋石油总公司 | Simulation test method of high-temperature hydrostatic performance of polymer insulation material |
| CN107084885A (en) * | 2017-05-15 | 2017-08-22 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| EP2132520B1 (en) * | 2007-03-20 | 2018-06-13 | VerdErg Limited | Method and apparatus for pipe wall thickness testing |
| CN110926783A (en) * | 2019-12-09 | 2020-03-27 | 哈尔滨电机厂有限责任公司 | Method for detecting external pressure deformation of insulated water conduit at high temperature |
| CN112525714A (en) * | 2020-11-30 | 2021-03-19 | 广东省特种设备检测研究院中山检测院 | Slow crack propagation test device and test method for plastic pipe |
| WO2021258550A1 (en) * | 2020-06-23 | 2021-12-30 | 西安热工研究院有限公司 | Automatic pressure control type internal pressure creep blasting test device and method |
-
1993
- 1993-04-08 CN CN 93208364 patent/CN2150552Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2132520B1 (en) * | 2007-03-20 | 2018-06-13 | VerdErg Limited | Method and apparatus for pipe wall thickness testing |
| CN102112858B (en) * | 2008-08-08 | 2012-11-14 | 原子能和替代能源委员会 | Test machine for applying uniform internal pressure on a tube |
| CN101614726A (en) * | 2009-07-20 | 2009-12-30 | 大连标准检测技术研究中心 | Device for detecting migration volume of chemical substances in the packaging material for food |
| CN102426142B (en) * | 2011-09-14 | 2014-01-29 | 西安石油大学 | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing |
| CN102426142A (en) * | 2011-09-14 | 2012-04-25 | 西安石油大学 | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing |
| CN103048200A (en) * | 2012-09-18 | 2013-04-17 | 青岛宇通管业有限公司 | Use method of hydrostatic bursting test machine for pipes |
| CN103048201A (en) * | 2012-09-18 | 2013-04-17 | 青岛宇通管业有限公司 | Hydrostatic bursting test machine for pipes |
| CN104849149A (en) * | 2015-05-19 | 2015-08-19 | 中国海洋石油总公司 | Simulation test method of high-temperature hydrostatic performance of polymer insulation material |
| CN104849149B (en) * | 2015-05-19 | 2017-09-29 | 中国海洋石油总公司 | A kind of polymer thermal insulative material at high temperature hydrostatic performance simulation experiment method |
| CN107084885A (en) * | 2017-05-15 | 2017-08-22 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| CN107084885B (en) * | 2017-05-15 | 2019-04-19 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| CN110926783A (en) * | 2019-12-09 | 2020-03-27 | 哈尔滨电机厂有限责任公司 | Method for detecting external pressure deformation of insulated water conduit at high temperature |
| WO2021258550A1 (en) * | 2020-06-23 | 2021-12-30 | 西安热工研究院有限公司 | Automatic pressure control type internal pressure creep blasting test device and method |
| CN112525714A (en) * | 2020-11-30 | 2021-03-19 | 广东省特种设备检测研究院中山检测院 | Slow crack propagation test device and test method for plastic pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |