CN201803014U - U-shaped tube hydrostatic testing tooling - Google Patents
U-shaped tube hydrostatic testing tooling Download PDFInfo
- Publication number
- CN201803014U CN201803014U CN 201020531778 CN201020531778U CN201803014U CN 201803014 U CN201803014 U CN 201803014U CN 201020531778 CN201020531778 CN 201020531778 CN 201020531778 U CN201020531778 U CN 201020531778U CN 201803014 U CN201803014 U CN 201803014U
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- sawtooth
- wedge
- shaped tube
- awl
- shaped pipe
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Abstract
The utility model introduces a U-shaped tube hydrostatic testing tooling, which comprises two check rings, two rubber rings, two wedged tapers, a sawtooth expansion block and a nut, wherein the two check rings, the two rubber rings and the two wedged tapers are sequentially sleeved on a core bar. When in work, the tooling is put into the two ends of the U-shaped tube, the nut is fastened to force the wedged tapers to move left so as to drive the sawtooth expansion block to move radially and axially simultaneously, the radial movement makes the sawtooth expansion block expanded with the inner wall of the U-shaped tube to generate friction, so that the tooling can not move axially, while generated axial movement of the sawtooth expansion block makes the left wedged tapers drive the check rings to extrude the rubber rings, thereby generating radial expansion to hermetically seal the U-shaped tube, and at last, water is filled into the U-shaped tube through an inner bore of the core bar 1 for carrying out hydrostatic testing. The utility model is applicable to U-shaped tube hydrostatic testing with the hydrostatic testing pressure being lower than 10.1 Mpa and the diameter being 57mm-159mm, and has simple structure, low manufacturing cost and good applicable effect.
Description
Technical field
The utility model relates to the pipe Hydraulic test technique, particularly a kind of U-shaped pipe hydraulic pressure test fixture.
Background technique
U-shaped pipe on a kind of hot wall Manifolds equipment is to be bent through heating in medium frequency by straight tube to form, and will carry out the 10MPa hydrostatic test after the U-shaped pipe bends and verify crooked back U-shaped pipe intensity and sealability.Generally speaking, the U-shaped pipe adopts two ends welding shrouding or uses external force two end-plates are held out against, and the hydrostatic test is carried out in water filling then.Such hydraulic test efficiency is low, cost is high, and the frock versatility is poor.Prior art such as publication number are that CN101363565A " a kind of pressure tube of radial expansion is suppressed frock " has introduced a kind of hydraulic pressure test fixture, but this frock making is comparatively complicated, and utilization efficiency is not high, and effect is general.
Summary of the invention
This patent technical problem to be solved provides a kind of U-shaped pipe hydraulic pressure test fixture, adopts the welding shrouding or uses external force and two end-plates are held out against the deficiency of carrying out that hydraulic test efficiency is low, cost is high, the frock versatility is poor, wasting time and energy thereby overcome U-shaped pipe two ends.
For solving the technological scheme that its technical problem adopts be: a kind of U-shaped pipe hydraulic pressure test fixture of this patent, comprise back-up ring, rubber circle, wedge awl, sawtooth expand piece, nut, back-up ring, rubber circle, wedge awl are two respectively, are sleeved on the core bar successively.
The structural type of the U-shaped pipe hydraulic pressure test fixture of this patent is: in core bar bottom, lay successively rubber circle, back-up ring, hyposphene awl, sawtooth expand piece, go up wedge awl, nut, the conical surface of last hyposphene awl is relative, the conical surface of wedge awl inserts in the wedge surface of the bloated piece of sawtooth.
Symmetrical wedge surface is adopted at the bloated piece internal surface two ends of described sawtooth, and outer surface is the buttress thread of axial direction to tube opening, and along third-class composition of circumference, material is 45 steel.When tightening nut, in the bloated piece of wedge awl shift-in sawtooth, force the bloated piece of sawtooth towards moving radially, tightly fit with the U-shaped inner tube wall, by the frictional force of buttress thread and U-shaped pipe internal surface the test frock is fixed tightly and can not be moved axially.The sawtooth third-class installation efficiency height of piece that expand, it is also accurate to locate.Described radially, axially, be meant core bar radially, axially.
Described wedge awl cylindrical one end is and the conical surface of the bloated piece wedge surface coupling of sawtooth that material is 45 steel, two of bilateral symmetry.When tightening nut, the tight back-up ring of wedge vertex of a cone when wedge awl shift-in sawtooth expands in the piece, back-up ring compresses the rubber circle, rubber circle pressurized and the U-shaped seal of tube is lived in radial expansion.
Described core bar left end is an annulus, and heart portion is hollow, and material is 45 steel, and right part is cubic shape.Core bar heart portion is hollow to be intake tunnel, and 45 steel rigidity and intensity are all better, and the core bar right part is cubic shape, is convenient to the spanner tightening nut.
U-shaped pipe hydraulic pressure test fixture using method of the present invention is: during work, frock is put into U-shaped pipe two ends, tightening nut forces the wedge awl to move to rubber circle direction, it is radial and axial mobile simultaneously to drive the bloated piece of sawtooth, move radially and make bloated piece of sawtooth and U-shaped inner tube wall swelling generation frictional force that frock can not be moved axially, the produced simultaneously sawtooth piece that expands moves axially and makes left side wedge awl promote that back-up ring extruding rubber circle produces radial expansion and tight the U-shaped seal of tube, at last by the core bar endoporus, carrying out the hydrostatic test in the water injection U-shaped pipe.
The beneficial effects of the utility model are: be applicable to that hydraulic test pressure 10.1MPa is following, the U-shaped pipe hydrostatic test of diameter 57mm～159mm, simple in structure, low cost of manufacture, suitable effective; Compare with other similar technology, wedge awl of the present utility model, the bloated piece of sawtooth adopt symplex structure, make that the utility model making is simpler, utilization efficiency is higher, using effect is better.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the cross section of the bloated piece of the utility model sawtooth.
Fig. 3 is the sectional view of the utility model core bar right part.
Among the figure: 1, core bar, 2, nut, 3, wedge awl, 4, the bloated piece, 5 of sawtooth, back-up ring, 6, rubber circle.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Shown in Fig. 1, symmetrical wedge surface is adopted at the bloated piece internal surface two ends of sawtooth, and outer surface is the buttress thread of axial direction to tube opening, along third-class composition of circumference.
In Fig. 1, back-up ring 1, rubber circle 6, wedge awl 3, the bloated piece 4 of sawtooth, nut 2 are sleeved on the core bar 1 successively, and the number of plies of rubber circle 6 looks U-shaped pipe specification and the test pressure size can be one or more layers.
During work, frock is put into U-shaped pipe two ends, tightening nut 2 forces wedge awl 3 to move to left, the drive sawtooth is bloated, and piece 4 is radial and axial mobile simultaneously, move radially and make bloated piece 4 of sawtooth and U-shaped inner tube wall swelling generation frictional force that frock can not be moved axially, the produced simultaneously sawtooth piece 4 that expands moves axially and makes left side wedge awl 3 promote that back-up rings 5 extruding rubber circles 6 produce radial expansions and tight the U-shaped seal of tube, at last by core bar 1 endoporus, carrying out the hydrostatic test in the water injection U-shaped pipe.
Claims (5)
1. U-shaped pipe hydraulic pressure test fixture, it is characterized in that: the test frock comprises back-up ring (5), rubber circle (6), wedge awl (3), the bloated piece (4) of sawtooth, nut (2), back-up ring (5), rubber circle (6), wedge awl (3) respectively are two, are sleeved on successively on the core bar (1).
2. according to the described U-shaped pipe of claim 1 hydraulic pressure test fixture, it is characterized in that described test tool structure is: in the core bar bottom, lay rubber circle (6), back-up ring (5), hyposphene awl, the bloated piece (4) of sawtooth successively, go up wedge awl, nut (2), the conical surface of last hyposphene awl is relative, and the conical surface of wedge awl inserts in the wedge surface of the bloated piece of sawtooth.
3. according to the described U-shaped pipe of claim 1 hydraulic pressure test fixture, it is characterized in that: symmetrical wedge surface is adopted at described sawtooth piece (4) the internal surface two ends of expanding, and outer surface is the buttress thread of axial direction to tube opening, and along third-class composition of circumference, material is 45 steel.
4. according to the described U-shaped pipe of claim 1 hydraulic pressure test fixture, it is characterized in that: described wedge awl (3) cylindrical one end is and the conical surface of bloated piece (4) the wedge surface coupling of sawtooth that material is 45 steel, two of bilateral symmetry.
5. according to the described U-shaped pipe of claim 1 hydraulic pressure test fixture, it is characterized in that: described core bar (1) left end is an annulus, and heart portion is hollow, and material is 45 steel, and right part is cubic shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020531778 CN201803014U (en) | 2010-09-17 | 2010-09-17 | U-shaped tube hydrostatic testing tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020531778 CN201803014U (en) | 2010-09-17 | 2010-09-17 | U-shaped tube hydrostatic testing tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803014U true CN201803014U (en) | 2011-04-20 |
Family
ID=43872512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020531778 Expired - Lifetime CN201803014U (en) | 2010-09-17 | 2010-09-17 | U-shaped tube hydrostatic testing tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803014U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393280A (en) * | 2011-09-26 | 2012-03-28 | 张家港化工机械股份有限公司 | Deep hole welding pressure test tool |
| CN103433439A (en) * | 2013-08-26 | 2013-12-11 | 宁夏共享集团有限责任公司 | Pressure inspection tool for straight-opening cavity |
| CN108374893A (en) * | 2018-04-25 | 2018-08-07 | 山西丰喜化工设备有限公司 | The single structure for pressure test of heat exchanger tube |
| CN110793723B (en) * | 2019-09-17 | 2022-02-01 | 浙江普阳深冷装备股份有限公司 | Hydraulic tool with balanced internal and external pressure and use method thereof |
-
2010
- 2010-09-17 CN CN 201020531778 patent/CN201803014U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393280A (en) * | 2011-09-26 | 2012-03-28 | 张家港化工机械股份有限公司 | Deep hole welding pressure test tool |
| CN103433439A (en) * | 2013-08-26 | 2013-12-11 | 宁夏共享集团有限责任公司 | Pressure inspection tool for straight-opening cavity |
| CN103433439B (en) * | 2013-08-26 | 2015-09-09 | 宁夏共享集团有限责任公司 | A kind of pressure check frock of straight shape of the mouth as one speaks chamber |
| CN108374893A (en) * | 2018-04-25 | 2018-08-07 | 山西丰喜化工设备有限公司 | The single structure for pressure test of heat exchanger tube |
| CN110793723B (en) * | 2019-09-17 | 2022-02-01 | 浙江普阳深冷装备股份有限公司 | Hydraulic tool with balanced internal and external pressure and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |