CN203422281U - Positioning clamp device for hydrostatic test after welding of hubbed flange and pipe - Google Patents
Positioning clamp device for hydrostatic test after welding of hubbed flange and pipe Download PDFInfo
- Publication number
- CN203422281U CN203422281U CN201320539658.0U CN201320539658U CN203422281U CN 203422281 U CN203422281 U CN 203422281U CN 201320539658 U CN201320539658 U CN 201320539658U CN 203422281 U CN203422281 U CN 203422281U
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- China
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- pipe
- hubbed flange
- flange
- positioning jig
- swelling
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- Expired - Fee Related
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a positioning clamp device for a hydrostatic test after welding of a hubbed flange and a pipe. The hubbed flange is arranged at the right end of the pipe, and the positioning clamp device is characterized by comprising an expansion rod device, wherein an insertion section which can be inserted by the pipe and an exposure section which is exposed outside the hubbed flange during test are arranged at the left end and the right end of the expansion rod device, respectively; the insertion section is tightly matched with the inner wall of the pipe; a clamping device is arranged on the outer side of the exposure section, which is exposed out of the right side of the pipe, of the expansion rod device, and the clamping device is fixedly connected with the hubbed flange; the outer edge of the expansion rod device is in interference fitting with the inner wall of the pipe during test. The positioning clamp device has the advantages of simple and compact structure, large clamping force, good tightness, simpleness and convenience in operation, high reliability efficiency in checking of welded joint leakage and the like, and the water used for test can not leak into the non-contact area of the inner wall of the pipe.
Description
Technical field
The utility model relates to a kind of positioning jig device for hubbed flange and the hydraulic testing of pipe postwelding, be applicable to AP1000 peace notes case hubbed flange and pipe postwelding and carry out the local hydraulic testing, and the local hydraulic testing of the pressure vessel of applicable other types, boiler hubbed flange and pipe postwelding detects, and belongs to equipment Technology field.
Background technology
Hubbed flange specification is 3 " ASME600#; ips is Φ 78mm; after flange and tube welding, need butt welded seam to carry out the hydraulic testing; due to the welding of carrying out in Shi power plant; power plant's overall progress and mounting condition all cannot carry out the hydraulic testing to whole pressure vessel, therefore can only carry out the local hydraulic testing to this weld seam.For guaranteeing that cleanliness and the hydraulic testing water of container itself can not penetrate into internal tank, therefore need manufacture and design a kind of positioning jig device for the hydraulic testing.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of for control flange with pipe weld is withstand voltage and whether have Seepage, guarantees the technological equipment of functional reliability under hydraulic pressure 0Mpa-6.895Mpa state.
In order to address the above problem, the utility model provides a kind of positioning jig device for hubbed flange and the hydraulic testing of pipe postwelding, the right-hand member of pipe is provided with hubbed flange, it is characterized in that, comprise swelling lever apparatus, when can insert the inserting paragraph of pipe when the two ends, left and right of swelling lever apparatus are respectively test and testing, expose the section of exposing outside hubbed flange; Between inserting paragraph and the inwall of pipe, closely cooperate; The outside of the section of exposing that swelling lever apparatus exposes from the right side of pipe is provided with clamp device, and clamp device is fixedly connected with hubbed flange; During test, interference fit between the outer rim of swelling lever apparatus and the inwall of pipe.
Preferably, described swelling lever apparatus comprises mandrel, and mandrel right side is provided with motion bar, and one end that mandrel exposes from motion bar right side is provided with set nut; Set nut is provided with at least one inlet opening.
Further, between described mandrel and the left end of motion bar, be provided with packing ring, the both sides of packing ring are respectively equipped with an O V-shaped ring.
Further, described set nut is provided with 6 inlet openings.
Preferably, described clamp device comprises the grooved metal gasket being from left to right arranged in order, anti-flange, adapter and shrouding, is provided with at least a set of bolt, packing ring, nut between anti-flange and hubbed flange.
Further, described shrouding is provided with center pit, and center pit is distinguished Bonding pressure table and needle valve by threeway.
The utility model has the advantage of:
(1) simple in structure, compact.
(2) large, the good airproof performance of clamping force.
(3) easy and simple to handle, check that the reliability efficiency of weld leakage is high.
(4) test water can not leak into not contact area of tube wall.
Accompanying drawing explanation
The structural representation of positioning jig device for a kind of hubbed flange that Fig. 1 provides for the utility model and the hydraulic testing of pipe postwelding;
Fig. 2 is the structural representation of swelling bar.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
As shown in Figure 1-2, the structural representation of a kind of positioning jig device for hubbed flange and the hydraulic testing of pipe postwelding providing for the utility model, comprise swelling lever apparatus, as shown in Figure 2, swelling lever apparatus comprises mandrel 1, the inside of mandrel 1 is solid construction, and the maximum gauge of mandrel 1 is less than the internal diameter of pipe 18 to be measured, can make mandrel 1 insert in pipe 18; The left side cover of mandrel 1 has 2 O V-shaped rings 2, adds a packing ring 3, the internal diameter wringing fit of O V-shaped ring 2 and pipe 18 between 2 O V-shaped rings 2; In the outside of mandrel 1, turn left put motion bar 4 from the right side, motion bar 4 is spacing at O V-shaped ring 2 places.When mandrel 1 inserts pipe 18, the section of exposing of mandrel 1 is exposed to outside the hubbed flange 17 on pipe 18 right sides, the upper set nut 9 of installing of the section of exposing, on set nut 9, open six inlet openings. when set nut 9 is tightened, by it, promote described motion bar 4 and be moved to the left, make to form interference fit between the outer rim of described O V-shaped ring 2 and the inwall of pipe 18.Between set nut 9 and hubbed flange 17, a slice grooved metal gasket 5 is installed, between set nut 9 and anti-flange 16, a slice grooved metal gasket 5 is installed; Hubbed flange 17 and anti-flange 16 by eight cover bolts 6 are installed, packing ring 7 is connected with nut 8, anti-flange 16 with take over 15 welding, take over 15 and weld with shrouding 10.Shrouding 10 is by threeway 11 difference setting pressure table 12 and needle valves 14, for monitoring, control hydraulic pressure.Needle valve 14 connects water pump by pump water swivel 13.
When carrying out the hydraulic testing and carry out, O V-shaped ring 2 is subject to the extruding of motion bar 4 and set nut 9, and outer ring outwards dilates, and external diameter increases, and between outer rim and the inwall of pipe 18, forms interference fit, and compression clips pipe 18 holes.And then intake in pipe 18 holes by the hole on shrouding 10, discharge the interior air of pipe 18, until water flows out the hole on shrouding 10, then tightens threeway 11, pump water swivel 13 water inlet vent port plug screws, and then water pump boosts to test pressure, closes needle valve 14.
Claims (6)
1. the positioning jig device for hubbed flange and the hydraulic testing of pipe postwelding, the right-hand member of pipe (18) is provided with hubbed flange (17), it is characterized in that, comprise swelling lever apparatus, when can insert the inserting paragraph of pipe (18) when the two ends, left and right of swelling lever apparatus are respectively test and testing, expose the section of exposing outside hubbed flange (17); Between the inwall of inserting paragraph and pipe (18), closely cooperate; The outside of the section of exposing that swelling lever apparatus exposes from the right side of pipe (18) is provided with clamp device, and clamp device is fixedly connected with hubbed flange (17); During test, interference fit between the inwall of the outer rim of swelling lever apparatus and pipe (18).
2. the positioning jig device of a kind of hubbed flange as claimed in claim 1 and the hydraulic testing of pipe postwelding, it is characterized in that, described swelling lever apparatus comprises mandrel (1), mandrel (1) right side is provided with motion bar (4), and one end that mandrel (1) exposes from motion bar (4) right side is provided with set nut (9); Set nut (9) is provided with at least one inlet opening.
3. the positioning jig device of a kind of hubbed flange as claimed in claim 2 and the hydraulic testing of pipe postwelding, it is characterized in that, between the left end of described mandrel (1) and motion bar (4), be provided with packing ring (3), the both sides of packing ring (3) are respectively equipped with an O V-shaped ring (2).
4. the positioning jig device of a kind of hubbed flange as claimed in claim 2 and the hydraulic testing of pipe postwelding, is characterized in that, described set nut is provided with 6 inlet openings.
5. the positioning jig device of a kind of hubbed flange as claimed in claim 1 and the hydraulic testing of pipe postwelding, it is characterized in that, described clamp device comprises the grooved metal gasket (5) being from left to right arranged in order, anti-flange (16), takes over (15) and shrouding (10), is provided with at least a set of bolt (6), packing ring (7), nut (8) between anti-flange (16) and hubbed flange (17).
6. the positioning jig device of a kind of hubbed flange as claimed in claim 5 and the hydraulic testing of pipe postwelding, it is characterized in that, described shrouding (10) is provided with center pit, and center pit is by threeway (11) difference Bonding pressure table (12) and needle valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539658.0U CN203422281U (en) | 2013-08-30 | 2013-08-30 | Positioning clamp device for hydrostatic test after welding of hubbed flange and pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539658.0U CN203422281U (en) | 2013-08-30 | 2013-08-30 | Positioning clamp device for hydrostatic test after welding of hubbed flange and pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422281U true CN203422281U (en) | 2014-02-05 |
Family
ID=50021376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320539658.0U Expired - Fee Related CN203422281U (en) | 2013-08-30 | 2013-08-30 | Positioning clamp device for hydrostatic test after welding of hubbed flange and pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422281U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258859A (en) * | 2015-11-12 | 2016-01-20 | 江苏绿叶锅炉有限公司 | Inner threaded pipe pump water tool |
| CN109238862A (en) * | 2018-09-14 | 2019-01-18 | 天津市联众钢管有限公司 | A kind of band pipe end flange steel pipe hydrostatic tester |
-
2013
- 2013-08-30 CN CN201320539658.0U patent/CN203422281U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258859A (en) * | 2015-11-12 | 2016-01-20 | 江苏绿叶锅炉有限公司 | Inner threaded pipe pump water tool |
| CN109238862A (en) * | 2018-09-14 | 2019-01-18 | 天津市联众钢管有限公司 | A kind of band pipe end flange steel pipe hydrostatic tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20210830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |