CN107144473A - Pipe hydraulic pressure detection device - Google Patents
Pipe hydraulic pressure detection device Download PDFInfo
- Publication number
- CN107144473A CN107144473A CN201710532375.6A CN201710532375A CN107144473A CN 107144473 A CN107144473 A CN 107144473A CN 201710532375 A CN201710532375 A CN 201710532375A CN 107144473 A CN107144473 A CN 107144473A
- Authority
- CN
- China
- Prior art keywords
- pipe
- cylinder
- hydraulic pressure
- measured
- pressure detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- 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
Abstract
The present invention relates to a kind of pipe hydraulic pressure detection device, including cylinder, cylinder can be built in pipe to be measured, it is characterised in that：The annular groove of opening outwardly is provided at both ends with the outside of cylinder, seal is provided with annular groove, also include the tension mechanism that can make to be tightly connected between cylinder and pipe to be measured by seal formation, the external diameter of cylinder is less than the internal diameter of pipe to be measured, and enclose to form hydraulic pressure chamber with seal in the presence of tension mechanism between cylinder and pipe to be measured, the water filling port of oriented hydraulic pressure intracavitary water filling is opened up on the perisporium of cylinder.The equipment makes cylinder realize sealing by seal with pipe to be measured by adjusting hydraulic pressure, when treating test tube son progress hydraulic pressure detection, needs water injection rate few, cost-effective；Gas in hydraulic pressure chamber can also be discharged by adjusting seal degree between cylinder and pipe to be measured；And the device structure is simple, lightweight, be moved easily and not by pipe length limitation, is easy to detect pipe paragraph by paragraph, use more facilitates.
Description
Technical field
The present invention relates to water pressure test equipment technical field, and in particular to a kind of pipe hydraulic pressure detection device.
Background technology
At present, in order to ensure steel pipe quality, it is necessary to which fluid delivery carries out water pressure test inspection with steel pipe, to grasp pipe
The water pressure resistance anti-leakage degree of son, such as Patent No. CN03259259.0 (Authorization Notice No. is CN2630835) China is practical
New patent《Large-diameter steel pipe hydraulic pressure testing device》, the hydraulic pressure testing device include hydraulic means, also include a plug, core
Respectively provided with 2 flow-guiding channels at the shaft core of rod two ends, the entrance of flow-guiding channel is located on plug shaft end and connected with hydraulic means,
The other end outlet be located at plug it is cylindrical on, plug two ends further respectively have sealing ring and pressing device, and although the device realizes
Hydraulic pressure detection is carried out to large-diameter steel pipe, but it is complicated, and the bore of steel pipe is big, then the diameter of the plug needed is big, this
The weight weight of hydraulic pressure testing device will be caused, it is difficult to it is mobile, cost of transportation is added, in-convenience in use, in addition, the two of plug
The pressing device at end includes guide sleeve, conical surface pressing plate and clamp nut, and the nut diameter of the big needs of diameter of plug increases than larger
Nut manufacturing cost is added.
And for example Patent No. CN201220370222.9 (Authorization Notice No. is CN202770609U) Chinese utility patent
《Steel pipe hydrostatic tester》, the hydrostatic testing machine includes a fixed seat and a moving cart, is equipped with fixed seat, moving cart
One sealing device, sealing device includes a support, and support is fixed in the fixed seat or moving cart, and support is provided with one
Bar, screw mandrel is threadedly coupled with support, and the medial extremity of screw mandrel is connected with a cylinder body, and piston is provided with cylinder body, and piston includes a big footpath
End and a miner diameter end, piston is sealed with cylinder body to be coordinated, and piston can be slided in cylinder body, and piston is provided with an inlet opening, cylinder body
A filling port and a booster pump connecting hole are respectively equipped with, filling port, booster pump connecting hole are connected with inlet opening, in fixed seat
Piston miner diameter end it is relative with the path end position of the piston in the moving cart.Although the testing machine is realized to steel pipe
Carry out the purpose of hydraulic pressure detection, but be due to steel pipe diameter it is big, axial water shutoff area is big, and the high hydraulic pressure of steel pipe experiment will be produced
Raw huge axial thrust so that hydraulic pressure detects that the housing construction of testing machine is complicated, weight is big and cost is high, in addition, to big
, it is necessary to which to filling water in whole steel pipe, water injection rate is big, and use cost is high when diameter steel pipe carries out hydraulic pressure detection.
Accordingly, it would be desirable to be improved further to pipe hydraulic pressure detection device.
The content of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of simple in construction, water injection rate
Less and pipe hydraulic pressure detection device easy to use.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of pipe hydraulic pressure detection device, includes
Cylinder, the cylinder can be built in pipe to be measured, it is characterised in that：Circumferential opening is provided with the outside of the cylinder two ends
Seal is provided with annular groove outwardly, the annular groove, also including can make to lead between cylinder and pipe to be measured
Cross the tension mechanism that seal formation is tightly connected, internal diameter of the external diameter less than pipe to be measured of the cylinder, and cylinder and treat
Enclose to form hydraulic pressure chamber with seal in the presence of tension mechanism between test tube, oriented water is opened up on the perisporium of the cylinder
Press the water filling port of intracavitary water filling.
In order to reduce the manufacturing cost of seal while conveniently making seal effective to being formed between cylinder and pipe to be measured
Sealing, is favourable because the gap between the top side wall and pipe internal perisporium to be measured of annular groove is smaller, it is preferable that described
The sidewall sections of annular groove are exposed to outside cylinder periphery wall, and the top of annular groove side wall and pipe internal perisporium to be measured it
Between radial dimension be less than radial dimension between cylinder and pipe to be measured.
For simple in construction and cost angle, it is preferable that the seal is sealing ring, and the sealing ring can be in tensioner
On the internal perisporium that pipe to be measured is pressed in the presence of mechanism.
Tension mechanism has multiple choices mode, it is preferable that the tension mechanism includes hydraulic means and hydraulic cavities, described
Hydraulic cavities are formed between the annular groove and seal, and the logical of connection hydraulic means pipeline is offered in the hydraulic cavities
Hole.
More easily discharged in order that obtaining gas in hydraulic pressure chamber, also include exhaust outlet, the exhaust outlet is arranged on cylinder
On the perisporium of body.
In order to it is more laborsaving, easily move the cylinder of pipe hydraulic pressure detection device, also including can facilitate cylinder to exist
The mobile device moved in pipe to be measured, the mobile device is arranged on cylinder.
The structure of mobile device has diversified forms, for simple in construction and cost angle, it is preferable that the mobile device
Include multiple support wheels, multiple support wheels are circumferentially arranged on the periphery wall of cylinder.
Further preferably, the accommodating of the support wheel can be housed by being extended inwardly to form on the periphery wall of the cylinder
Groove.
In order that cylinder movement more stable in pipe to be measured, also including can be easy to cylinder to slip into treat test tube
Directive wheel in son, the directive wheel is arranged at the forward end of cylinder at least one end, and the directive wheel can make the stable cunning of cylinder
Enter in pipe to be measured, prevent cylinder from being rocked during slipping into pipe to be measured and the mouth of pipe of side wall and pipe to be measured to cylinder is made
Into damage.
The connected mode of cylinder two ends and annular groove has a variety of, it is preferable that the two ends of the cylinder are and annular groove
A lateral wall be fixedly connected by welding it is into a single integrated structure.
Compared with prior art, the advantage of the invention is that：On the one hand, sealing is caused by the hydraulic pressure adjusted in hydraulic cavities
Part swelling, so that cylinder is tightly connected with pipe to be measured by seal and cooperatively forming for annular groove；On the other hand, lead to
Water filling port is crossed to during hydraulic pressure intracavitary water filling, can be by adjusting the seal degree of cylinder and pipe to be measured, to hydraulic pressure intracavitary
Gas discharged, then by hydraulic pressure chamber sealed and by water filling port squeeze into water under high pressure carry out hydraulic pressure detection；The cylinder
Inner hollow so that weight of equipment is light, be moved easily, while being easily installed the pipelines such as water pipe and valve；In addition, using the pipe
Sub- hydraulic pressure detection device carries out hydraulic pressure detection, needs the water injection rate of water filling few, has saved cost；And the device structure is simple, not by
Tube length is limited, and is easy to detect pipe paragraph by paragraph, and use more facilitates.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, the pipe hydraulic pressure detection device of the embodiment of the present invention includes cylinder 2 and tension mechanism, wherein, cylinder
Body 2 can be built in pipe 1 to be measured, the inner hollow of cylinder 2, and the outside of cylinder 2 is provided at both ends with a circle opening outwardly annular recessed
Seal 3 is provided with groove 21, annular groove 21；The connected mode of cylinder 2 and annular groove 21 has a variety of, cylinder 2 and annular
Groove 21 can be integrally formed, it would however also be possible to employ the mode such as welding links together cylinder 2 with annular groove 21, in this reality
Apply in example, it is preferable that the two ends of cylinder 2 are fixedly connected by welding into a single integrated structure with a lateral wall of annular groove 21.
Tension mechanism can make close by seal 3 and cooperatively forming for annular groove 21 between cylinder 2 and pipe to be measured 1
Envelope connection, the structure of tension mechanism has the tension mechanism in multiple choices, the present embodiment to include hydraulic means and hydraulic cavities 4,
Hydraulic cavities 4 are formed between annular groove 21 and seal 3, and the through hole 41 of connection hydraulic means pipeline is offered in hydraulic cavities 4,
Tension mechanism, which can make to be formed by seal 3 between cylinder 2 and pipe to be measured 1, to be tightly connected, from simple in construction and cost angle
For degree, seal 3 is preferably sealing ring.
In order to reduce the manufacturing cost of sealing ring and meanwhile facilitate sealing ring in the presence of tension mechanism with annular groove 21
Cooperation between cylinder 2 and pipe to be measured 1 formed seal, in the present embodiment, the sidewall sections of annular groove 21 are exposed to
Outside the periphery wall of cylinder 2, and radial dimension between the top of the side wall of annular groove 21 and the internal perisporium of pipe to be measured 1 is less than cylinder
Radial dimension between 2 and pipe to be measured 1；The external diameter of cylinder 2 is less than the internal diameter of pipe 1 to be measured, and cylinder 2 and pipe to be measured
Enclose to form hydraulic pressure chamber 5 with seal 3 in the presence of tension mechanism between 1, by controlling the hydraulic pressure in hydraulic cavities 4 so that
Sealing ring swelling, so that realizing that sealing connects by the cooperation of sealing ring and annular groove 21 between cylinder 2 and pipe to be measured 1
Connect, and then cause the formation of hydraulic pressure chamber 5 to seal the water filling port for opening up water filling in oriented hydraulic pressure chamber 5 on hydraulic pressure chamber 5, the perisporium of cylinder 2
22, valve (not shown) is provided with water filling port 22；During water filling, sealing ring can be caused by regulation and test tube is treated
Gap (i.e. hydraulic pressure chamber 5 leaves space) is left between son 1, and discharges the gas in hydraulic pressure chamber 5；And in order that gas can be more square
Just discharge, exhaust outlet 7 is provided with the perisporium of the cylinder 2 of the pipe hydraulic pressure detection device of the present embodiment.
For convenience effortlessly being moved to cylinder 2 needs in pipe to be detected and convenient support cylinder 2, pipe hydraulic pressure
Detection device also includes that the mobile device that cylinder 2 is moved in pipe 1 to be measured can be facilitated, and mobile device includes multiple supports
Wheel 61, multiple support wheels 61 are circumferentially arranged on the periphery wall of cylinder 2, and multiple implications is at least three in the present embodiment
The individual meaning, in the present embodiment, in order that cylinder 2 is more swimmingly moved in pipe 1 to be measured, the two of the periphery wall of cylinder 2
End is circumferentially provided with 4 support wheels 61, when cylinder 2 is placed in pipe 1 to be measured, and support wheel 61 is located at the periphery wall of cylinder 2
Between the internal perisporium of pipe 1 to be measured；For the ease of the installation of support wheel 61, hydraulic pressure detection is more convenient for, it is preferable that cylinder 2
Periphery wall, which is extended inwardly to form, can house the storage tank 23 of support wheel 61.
In order that obtaining the movement more stable in pipe 1 to be measured of cylinder 2, prevent cylinder 2 from being rocked in pipe 1 to be measured,
And the mouth of pipe of cylinder 2 and pipe to be measured 1 is caused to damage, pipe hydraulic pressure detection, which sets also to include, can be easy to cylinder 2 to slide
Enter the directive wheel 62 in pipe 1 to be measured, directive wheel 62 is arranged at the forward end of at least one end of cylinder 2, specifically, the present embodiment
Middle directive wheel 62 has 4, the circumferentially arranged forward end and directive wheel in the lateral wall one end of annular groove 21 of 4 directive wheels 62
62 are set along the axial direction of the internal perisporium of pipe 1 to be measured.
The course of work of the pipe hydraulic pressure detection device is as follows：
Pipe hydraulic pressure detection device is moved in pipe 1 to be measured, the hydraulic pressure in regulation hydraulic cavities 4 so that cylinder 2 is with treating
Realized and be tightly connected by sealing ring between test tube 1, the then water filling into sealed hydraulic pressure chamber 5, and being discharged by exhaust outlet 7
Gas in hydraulic pressure chamber 5, finally detects that the inwall of pipe 1 to be measured bears whether pressure reaches testing standard value, realizes the water pressure test；
After the completion of detection, pressure release is carried out to hydraulic pressure chamber 5 by the valve for opening water filling port 22, the hydraulic pressure then adjusted in hydraulic cavities 4 makes
Sealing ring resets, and finally discharges the water in water outlet pressure chamber 5, you can carry out the test of lower section of a pipe.
Pipe hydraulic pressure detection device in the present embodiment, not by pipe length limitation, can paragraph by paragraph be detected to pipe,
Using more facilitating, the pipe hydraulic pressure detection device can apply in the big-inch pipes such as steel pipe, glass reinforced plastic pipe, but actual
In, due to needing to set pipeline in cylinder, then the present embodiment is particularly suitable for use in steel pipe of the cylinder external diameter more than 1.0 meters.
Claims (10)
1. a kind of pipe hydraulic pressure detection device, includes cylinder (2), the cylinder (2) can be built in pipe to be measured (1), its
It is characterised by：It is provided at both ends with the annular groove (21) of opening outwardly, the annular groove (21) and sets on the outside of the cylinder (2)
Be equipped with seal (3), also include can make between cylinder (2) and pipe to be measured (1) by seal (3) formation be tightly connected
Tension mechanism, the external diameter of the cylinder (2) is less than the internal diameter of pipe to be measured (1), and cylinder (2) and pipe to be measured (1) it
Between with seal (3) enclose to form hydraulic pressure chamber (5) in the presence of tension mechanism, open up oriented on the perisporium of the cylinder (2)
The water filling port (22) of hydraulic pressure chamber (5) interior water filling.
2. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：The side of sidewall portion of the annular groove (21)
Divide and be exposed to outside cylinder (2) periphery wall, and the footpath between the top of annular groove (21) side wall and pipe to be measured (1) internal perisporium
It is less than the radial dimension between cylinder (2) and pipe to be measured (1) to size.
3. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：The seal (3) is sealing ring, institute
Stating sealing ring can be pressed on the internal perisporium of pipe to be measured (1) in the presence of tension mechanism.
4. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：The tension mechanism includes hydraulic pressure dress
Put and be formed at hydraulic cavities (4), the hydraulic cavities (4) between the annular groove (21) and seal (3), the hydraulic cavities
(4) through hole (41) of connection hydraulic means pipeline is offered in.
5. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：Also include exhaust outlet (7), the row
Gas port (7) is arranged on the perisporium of cylinder (2).
6. pipe hydraulic pressure detection device according to any one of claim 1 to 5, it is characterised in that：Also including can
The mobile device for facilitating cylinder (2) to be moved in pipe to be measured (1), the mobile device is arranged on cylinder (2).
7. pipe hydraulic pressure detection device according to claim 6, it is characterised in that：The mobile device includes multiple
Support wheel (61), multiple support wheels (61) are circumferentially arranged on the periphery wall of cylinder (2).
8. pipe hydraulic pressure detection device according to claim 7, it is characterised in that：On the periphery wall of the cylinder (2) to
Interior extension, which is formed with, can house the storage tank (23) of the support wheel (61).
9. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：Cylinder (2) can be easy to by also including
The directive wheel (62) slipped into pipe to be measured (1), the directive wheel (62) is arranged at the front end end of the cylinder (2) at least one end
Portion.
10. pipe hydraulic pressure detection device according to claim 1, it is characterised in that：The two ends of the cylinder (2) are and ring
One lateral wall of connected in star (21) is fixedly connected by welding into a single integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532375.6A CN107144473A (en) | 2017-07-03 | 2017-07-03 | Pipe hydraulic pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532375.6A CN107144473A (en) | 2017-07-03 | 2017-07-03 | Pipe hydraulic pressure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107144473A true CN107144473A (en) | 2017-09-08 |
Family
ID=59784973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710532375.6A Pending CN107144473A (en) | 2017-07-03 | 2017-07-03 | Pipe hydraulic pressure detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107144473A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2380749Y (en) * | 1999-07-05 | 2000-05-31 | 张方杰 | Expansion sealing apparatus |
| CN2630835Y (en) * | 2003-06-30 | 2004-08-04 | 卢灿彬 | Large-aperture steel pipe water pressure measuring device |
| CN2856977Y (en) * | 2005-12-16 | 2007-01-10 | 张勇 | Hydraulic testing machine of prestressed steel drum concrete pipe steel drum |
| CN201041535Y (en) * | 2007-06-07 | 2008-03-26 | 昊华中意玻璃钢有限公司 | Water pressure tester for large-caliber glass steel tube |
| CN201387372Y (en) * | 2009-03-27 | 2010-01-20 | 潍坊亿斯特管业科技有限公司 | Sealing structure for pressure-testing head of hydraulic pressure tester for steel pipes |
| CN202770609U (en) * | 2012-07-27 | 2013-03-06 | 上海五钢设备工程有限公司 | Steel pipe hydrostatic testing machine |
| CN203894118U (en) * | 2014-06-20 | 2014-10-22 | 石家庄通天管业有限公司 | Hydrostatic testing machine for steel cylinder of prestressed concrete cylinder pipe |
| CN204005018U (en) * | 2014-06-20 | 2014-12-10 | 山东墨龙石油机械股份有限公司 | Steel tube pressure-measuring seal arrangement |
| CN105067444A (en) * | 2015-08-04 | 2015-11-18 | 新兴铸管股份有限公司 | Supercharging test apparatus and use method thereof |
| CN205749143U (en) * | 2016-06-16 | 2016-11-30 | 泉州市路通管业科技有限公司 | Glass reinforced plastic pipe water test unit |
| CN206818534U (en) * | 2017-07-03 | 2017-12-29 | 宁波友宁钢管有限公司 | Pipe hydraulic pressure detection device |
-
2017
- 2017-07-03 CN CN201710532375.6A patent/CN107144473A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2380749Y (en) * | 1999-07-05 | 2000-05-31 | 张方杰 | Expansion sealing apparatus |
| CN2630835Y (en) * | 2003-06-30 | 2004-08-04 | 卢灿彬 | Large-aperture steel pipe water pressure measuring device |
| CN2856977Y (en) * | 2005-12-16 | 2007-01-10 | 张勇 | Hydraulic testing machine of prestressed steel drum concrete pipe steel drum |
| CN201041535Y (en) * | 2007-06-07 | 2008-03-26 | 昊华中意玻璃钢有限公司 | Water pressure tester for large-caliber glass steel tube |
| CN201387372Y (en) * | 2009-03-27 | 2010-01-20 | 潍坊亿斯特管业科技有限公司 | Sealing structure for pressure-testing head of hydraulic pressure tester for steel pipes |
| CN202770609U (en) * | 2012-07-27 | 2013-03-06 | 上海五钢设备工程有限公司 | Steel pipe hydrostatic testing machine |
| CN203894118U (en) * | 2014-06-20 | 2014-10-22 | 石家庄通天管业有限公司 | Hydrostatic testing machine for steel cylinder of prestressed concrete cylinder pipe |
| CN204005018U (en) * | 2014-06-20 | 2014-12-10 | 山东墨龙石油机械股份有限公司 | Steel tube pressure-measuring seal arrangement |
| CN105067444A (en) * | 2015-08-04 | 2015-11-18 | 新兴铸管股份有限公司 | Supercharging test apparatus and use method thereof |
| CN205749143U (en) * | 2016-06-16 | 2016-11-30 | 泉州市路通管业科技有限公司 | Glass reinforced plastic pipe water test unit |
| CN206818534U (en) * | 2017-07-03 | 2017-12-29 | 宁波友宁钢管有限公司 | Pipe hydraulic pressure detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102042935B (en) | Method for detecting hydrostatic pressure of thin-wall steel pipe under end face seal condition | |
| CN101858817B (en) | Equal-pressure virtual isolation check valve sealing test method and equipment | |
| CN102680189B (en) | Leakage detecting device | |
| CN206818534U (en) | Pipe hydraulic pressure detection device | |
| CN210464821U (en) | Tightness detection device for mesh steel belt polyethylene composite pipe | |
| CN204679232U (en) | A kind of pipe fitting proving installation | |
| CN104807958B (en) | A kind of three axial self-align core holding units | |
| GB573424A (en) | Method and apparatus for filling tires with fluid | |
| CN102829920B (en) | Pipe fitting leakage sealing and detecting device | |
| CN107144473A (en) | Pipe hydraulic pressure detection device | |
| CN206832420U (en) | A kind of single port pressure testing device for large diameter pipeline | |
| CN206223381U (en) | A kind of heavy caliber pipe internal pressure-resistant experimental rig | |
| CN204630820U (en) | A kind of three axial self-align core holding units | |
| CN203718228U (en) | Quick connector for airtight test | |
| CN203037535U (en) | Pressure resistance testing device for small irony pressure container | |
| CN103216209A (en) | Pipe interior packer for detecting sealing property of oil sleeve | |
| CN217032914U (en) | Valve leakproofness detects uses hydraulic test machine | |
| KR101430423B1 (en) | Baloon-type water coaking device using saddle for water works | |
| CN2630835Y (en) | Large-aperture steel pipe water pressure measuring device | |
| CN106404628B (en) | A kind of adding pressure type low-permeability soil is rapidly saturated and permeates measuring equipment | |
| CN201706186U (en) | SE6 compound insulation mutual-inductor air filling tube | |
| CN111912676B (en) | Self-sealing type quantitative sampling valve for liquid conveying pipeline | |
| CN105757056B (en) | A kind of sealed leakage detector | |
| CN211978636U (en) | Testing device for full-diameter shale radial permeability | |
| CN204944774U (en) | A kind of device for detecting sealability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |