CN101982754B - Method and device for sealing hydrostatic test pipe orifice of hot extrusion molding branch pipe - Google Patents
Method and device for sealing hydrostatic test pipe orifice of hot extrusion molding branch pipe Download PDFInfo
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- CN101982754B CN101982754B CN201010544807A CN201010544807A CN101982754B CN 101982754 B CN101982754 B CN 101982754B CN 201010544807 A CN201010544807 A CN 201010544807A CN 201010544807 A CN201010544807 A CN 201010544807A CN 101982754 B CN101982754 B CN 101982754B
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- arm
- blind plate
- plate lid
- flgd
- flanged
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000000465 moulding Methods 0.000 title claims abstract description 15
- 238000001192 hot extrusion Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 title claims abstract description 13
- 230000002706 hydrostatic effect Effects 0.000 title abstract 2
- 210000002445 nipple Anatomy 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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Abstract
The invention discloses a method and a device for sealing the hydrostatic test pipe orifice of a hot extrusion molding branch pipe. The device is characterized by mainly consisting of a blind plate cover (4), a support plate (3), a nipple (5) with flanges at the two ends, a flange cover (6), a nut (11) and a screw (2); the blind plate cover (4) is covered on a branch pipe (8); the support plate (3) is located in a main pipeline or a cylinder (1) and opposite to the branch pipe (8); the branch pipe (8) and the support plate (3) are connected through the nut (11) and the screw (2); a sealing ring (7) is installed between the blind plate cover (4) and the end surface of the branch pipe (8); vent holes (10) are formed on the blind plate cover (4); one end of the nipple (5) with flanges at the two ends is connected with the blind plate cover (4), and the other end is connected with the flange cover (6); and the vent holes (10) are communicated with the inner cavity of the branch pipe (8) and the inner cavity of the nipple (5) with flanges at the two ends respectively. The invention is simple and efficient and ensures no damage to the body material.
Description
Technical field
The present invention relates to a kind of pressure piping arm withstand voltage test packoff, especially arm that hot extrusion molding is extracted or ozzle a kind of encapsulating method of carrying out hydraulic pressure, specifically a kind of hot extrusion molding arm (comprising arm and ozzle) hydraulic testing ferrule method and device.
Background technology
At present, cylindrical shell or body tube drawing technology are widely used in the interface of various pressure pipings and high pressure cylindrical shell equipment, because arm that the employing extruding is extracted or ozzle and body or cylindrical shell are that seamless link is integral, thereby avoided the arm of welding fabrication or the welding residual stress of ozzle, thereby pipeline or device ' have been improved greatly; But its maximum problem is that arm or the ozzle extracted generally can be too not high, if thereby adopt the method for welded seal during the hydraulic testing, welding heat affected zone certainly will to be removed after the hydraulic testing, in the design of arm, just must consider the loss of this part length of tube like this, thereby can adopt the way that increases person in charge's thickness, will increase equipment cost greatly like this, the unrelieved stress that welding simultaneously forms is not eliminated fully, the safe operation of equipment has from now on been brought hidden danger yet.
Summary of the invention
Existing when the objective of the invention is to adopt welded seal when now the ozzle of extrusion modling or arm being carried out the hydraulic testing influence ozzle or props up length of tube and have the problem of remaining welding stress, invents a kind of encapsulating method and device that can carry out withstand voltage test to ozzle or arm that need not to weld.
One of technical scheme of the present invention is:
A kind of hot extrusion molding arm hydraulic testing ferrule method is characterized in that it may further comprise the steps:
At first, place a blind plate lid 4 on the mouth of pipe of arm 8, this blind plate lid 4 is provided with through hole 9 and the vent hole 10 that installs screw rod 2, and between the mouth of pipe wall of blind plate lid 4 and arm O-ring seal 7 is installed;
Secondly, with the trunk line of arm 8 corresponding positions or cylindrical shell 1 in back up pad 3 of placement;
In the 3rd step, with nut 11 and screw rod 2 back up pad 3 and blind plate are covered 4 and be fastenedly connected into an integral body and O-ring seal 7 is compressed;
In the 4th step, end of the flanged (FLGD) pipe nipple 5 in two ends and blind plate are covered 4 be connected, and between joint face, packing washer is installed;
The 5th step, the opening of arm 8 is made progress, and water filling in trunk line or cylindrical shell 1 is after overflowing above water flanged (FLGD) pipe nipple 5 from two ends, the other end of flanged (FLGD) pipe nipple 5 covers blind flange 6 and uses bolted at two ends again, should install sealing gasket additional between blind flange 6 and pipe nipple flange 5 simultaneously;
The 6th step, progressively pressurize for trunk line or cylindrical shell 1, if there is water between the surface of contact of blind plate lid 4 and arm 8, to ooze out in the pressure process, then should first release, the flanged (FLGD) pipe nipple 5 of blind flange 6 and two ends is pulled down, clamp nut 11 once more, repeat for the 4th to the 6th step again, between blind plate lid 4 and arm 8, do not have seepage, can finish the withstand voltage test of arm according to testing regulations.
The through hole 9 of described blind plate lid 5 is unthreaded hole or screw.
Two of technical scheme of the present invention is:
A kind of hot extrusion molding arm hydraulic testing orifice sealing device, it mainly covers 4 by blind plate its feature, back up pad 3, the flanged (FLGD) pipe nipple 5 in two ends, blind flange 6, nut 11 and screw rod 2 are formed, blind plate lid 4 lids are contained on the arm 8, back up pad 3 is arranged in trunk line or cylindrical shell 1 and relative with described arm 8, arm 8 links to each other by nut 11 and screw rod 2 with back up pad 3, between the end face of blind plate lid 4 and arm 8, O-ring seal 7 is installed, on blind plate lid 4, offer vent hole 10, one end of the flanged (FLGD) pipe nipple 5 in two ends links to each other with blind plate lid 4, the other end links to each other with blind flange 6, and vent hole 10 is communicated with the inner chamber of the flanged (FLGD) pipe nipple 5 of arm 8 inner chambers and two ends respectively.
The upper end spinning of described screw rod 2 is on blind plate lid 4.
The two ends of the flanged (FLGD) pipe nipple 5 in described two ends all are equipped with O-ring seal.
Beneficial effect of the present invention:
(1) the present invention is owing to be to adopt non-welding method to seal the mouth of pipe of hot drawing arm, thereby can not stay unrelieved stress by line up, improved the general safety performance of extracting tube apparatus or pipeline.
(2) the present invention can be lowered equipment or pipeline to extracting the requirement of mouthful thickness or height, thereby improves the yield rate of extracting mouthful technology, lowers production cost.
(3) the inventive method is simple, and the efficient height can not cause damage to bulk material.
Description of drawings
Fig. 1 is the structural representation of packoff of the present invention.
Fig. 2 is the structural representation of blind plate lid of the present invention.
Fig. 3 is the structural representation of back up pad of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1.
A kind of hot extrusion molding arm hydraulic testing orifice sealing device, mainly by blind plate lid 4, back up pad 3, the flanged (FLGD) pipe nipple 5 in two ends, blind flange 6, nut 11 and screw rod 2 are formed, blind plate lid 4 lids are contained on the arm 8, back up pad 3 is arranged in trunk line or cylindrical shell 1 and relative with described arm 8, arm 8 and back up pad 3 are connected to arm 8(by nut 11 and screw rod 2 and also can be the ozzle of extracting moulding, two ends down together), wherein back up pad 3 is positioned at the inside of link to each other trunk line or cylindrical shell 1, blind plate lid 4 is positioned at the upper end of arm 8, between the end face of blind plate lid 4 and arm 8, O-ring seal 7 is installed, on blind plate lid 4, offer vent hole 10, one end of the flanged (FLGD) pipe nipple 5 in two ends links to each other with blind plate lid 4, should add sealing gasket between the two, the other end also should be equipped with sealing gasket between the two with blind flange 6() link to each other, vent hole 10 is communicated with the inner chamber of the flanged (FLGD) pipe nipple 5 of arm 8 inner chambers and two ends respectively.During concrete enforcement, screw rod 2 can have several different methods with being connected of nut 11, and screw rod 2 can be two ends all not with the screw rod of nut.Also can be the screw rod of an end band nut, if the thickness of blind plate lid 4 is bigger, the upper end of screw rod 2 also directly spinning cover on 4 at blind plate.
Encapsulating method of the present invention is as follows:
A kind of hot extrusion molding arm hydraulic testing ferrule method, it may further comprise the steps:
At first, place a blind plate lid 4 on the mouth of pipe of arm 8, this blind plate lid 4 is provided with through hole 9 and the vent hole 10 that installs screw rod 2, and between the mouth of pipe wall of blind plate lid 4 and arm O-ring seal 7 is installed;
Secondly, with the trunk line of arm 8 corresponding positions or cylindrical shell 1 in back up pad 3 of placement;
In the 3rd step, with nut 11 and screw rod 2 back up pad 3 and blind plate are covered 4 and be fastenedly connected into an integral body and O-ring seal 7 is compressed;
In the 4th step, end of the flanged (FLGD) pipe nipple 5 in two ends and blind plate are covered 4 be connected, and between joint face, packing washer is installed;
The 5th step, the opening of arm 8 is made progress, and water filling in trunk line or cylindrical shell 1 is after overflowing above water flanged (FLGD) pipe nipple 5 from two ends, the other end of flanged (FLGD) pipe nipple 5 covers blind flange 6 and uses bolted at two ends again, should install sealing gasket additional between blind flange 6 and pipe nipple flange 5 simultaneously;
The 6th step, progressively pressurize for trunk line or cylindrical shell 1, if there is water between the surface of contact of blind plate lid 4 and arm 8, to ooze out in the pressure process, then should first release, the flanged (FLGD) pipe nipple 5 of blind flange 6 and two ends is pulled down, clamp nut 11 once more, repeat for the 4th to the 6th step again, between blind plate lid 4 and arm 8, do not have seepage, can finish the withstand voltage test of arm according to testing regulations.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (5)
1. hot extrusion molding arm hydraulic testing ferrule method is characterized in that it may further comprise the steps:
At first, place a blind plate lid (4) on the mouth of pipe of arm (8), this blind plate lid (4) is provided with through hole (9) and the vent hole (10) that installs screw rod (2), and between the mouth of pipe wall of blind plate lid (4) and arm O-ring seal (7) is installed;
Secondly, with the trunk line of arm (8) corresponding position or cylindrical shell (1) in a placement back up pad (3);
In the 3rd step, with nut (11) and screw rod (2) back up pad (3) and blind plate are covered (4) and be fastenedly connected into an integral body and O-ring seal (7) is compressed;
In the 4th step, end of the flanged (FLGD) pipe nipples in two ends (5) and blind plate are covered (4) be connected, and between joint face, packing washer is installed;
The 5th step, the opening of arm (8) is made progress, water filling in trunk line or cylindrical shell (1), after overflowing above water flanged (FLGD) pipe nipple (5) from two ends, the other end of flanged (FLGD) pipe nipple (5) covers blind flange (6) and uses bolted at two ends again, should install sealing gasket additional between blind flange (6) and pipe nipple flange (5) simultaneously;
The 6th step, progressively pressurize for trunk line or cylindrical shell (1), if there is water between the surface of contact of blind plate lid (4) and arm (8), to ooze out in the pressure process, then should first release, the flanged (FLGD) pipe nipple of blind flange (6) and two ends (5) is pulled down, clamp nut (11) repeated for the 4th to the 6th step once more again, between blind plate lid (4) and arm (8), do not have seepage, can finish the withstand voltage test of arm according to testing regulations.
2. hot extrusion molding arm hydraulic testing ferrule method according to claim 1 is characterized in that the through hole (9) of described blind plate lid (5) is unthreaded hole or screw.
3. hot extrusion molding arm hydraulic testing orifice sealing device, it mainly covers (4) by blind plate its feature, back up pad (3), the flanged (FLGD) pipe nipples in two ends (5), blind flange (6), nut (11) and screw rod (2) are formed, blind plate lid (4) lid is contained on the arm (8), back up pad (3) is arranged in trunk line or cylindrical shell (1) and relative with described arm (8), blind plate lid (4) links to each other by nut (11) and screw rod (2) with back up pad (3), between the end face of blind plate lid (4) and arm (8), O-ring seal (7) is installed, on blind plate lid (4), offer vent hole (10), one end of the flanged (FLGD) pipe nipples in two ends (5) links to each other with blind plate lid (4), the other end links to each other with blind flange (6), and vent hole (10) is communicated with the inner chamber of the flanged (FLGD) pipe nipple of arm (8) inner chamber and two ends (5) respectively.
4. hot extrusion molding arm hydraulic testing orifice sealing device according to claim 3, the upper end spinning of the described screw rod of its feature (2) is on blind plate lid (4).
5. hot extrusion molding arm hydraulic testing orifice sealing device according to claim 3, the two ends of the flanged (FLGD) pipe nipples in the described two ends of its feature (5) all are equipped with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010544807A CN101982754B (en) | 2010-11-16 | 2010-11-16 | Method and device for sealing hydrostatic test pipe orifice of hot extrusion molding branch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010544807A CN101982754B (en) | 2010-11-16 | 2010-11-16 | Method and device for sealing hydrostatic test pipe orifice of hot extrusion molding branch pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101982754A CN101982754A (en) | 2011-03-02 |
| CN101982754B true CN101982754B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010544807A Active CN101982754B (en) | 2010-11-16 | 2010-11-16 | Method and device for sealing hydrostatic test pipe orifice of hot extrusion molding branch pipe |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841019B (en) * | 2012-08-31 | 2014-11-12 | 中电电机股份有限公司 | Device and method for testing voltage resistance of small and medium-sized explosion-proof motor shell |
| CN108169026B (en) * | 2017-11-29 | 2020-06-16 | 西安航天动力机械有限公司 | A inspection frock for high-pressure vessel hydraulic pressure test |
| CN109396756A (en) * | 2018-09-14 | 2019-03-01 | 哈尔滨锅炉厂有限责任公司 | The manufacturing method of welding neck flange hydraulic cover structure |
| CN112748018B (en) * | 2020-12-29 | 2023-06-13 | 浙江德创环保科技股份有限公司 | Marine glass fiber reinforced plastic GRE pipe external pressure test device with reliable sealing |
| CN114165672A (en) * | 2021-10-20 | 2022-03-11 | 海洋石油工程股份有限公司 | A welding-free plugging device for pressure testing of low-pressure metal pipelines |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795615Y (en) * | 2005-06-23 | 2006-07-12 | 贾来友 | Seal joint for large caliber plastic pipe and pipe anti-pressure test |
| CN201875352U (en) * | 2010-11-16 | 2011-06-22 | 江苏新恒基重工有限公司 | Hot extrusion molding branch pipe hydrostatic test pipe orifice sealing device |
-
2010
- 2010-11-16 CN CN201010544807A patent/CN101982754B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795615Y (en) * | 2005-06-23 | 2006-07-12 | 贾来友 | Seal joint for large caliber plastic pipe and pipe anti-pressure test |
| CN201875352U (en) * | 2010-11-16 | 2011-06-22 | 江苏新恒基重工有限公司 | Hot extrusion molding branch pipe hydrostatic test pipe orifice sealing device |
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| Publication number | Publication date |
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| CN101982754A (en) | 2011-03-02 |
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Owner name: JIANGSU NEW HENGJI SPECIAL EQUIPMENT CO., LTD. Free format text: FORMER NAME: JIANGSU NEW HENGJI HEAVY INDUSTRY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 210028 No. 8, Maigaoqiao Pioneer Park, Qixia District, Jiangsu, Nanjing Patentee after: Jiangsu New Hengji Special Equipment Co., Ltd. Address before: 210028 No. 8, Maigaoqiao Pioneer Park, Qixia District, Jiangsu, Nanjing Patentee before: Jiangsu Xinhengji Heavy Industry Co., Ltd. |