CN102853971A - Device for testing sealing performance of hydraulic expansion pipe - Google Patents
Device for testing sealing performance of hydraulic expansion pipe Download PDFInfo
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- CN102853971A CN102853971A CN2012103261292A CN201210326129A CN102853971A CN 102853971 A CN102853971 A CN 102853971A CN 2012103261292 A CN2012103261292 A CN 2012103261292A CN 201210326129 A CN201210326129 A CN 201210326129A CN 102853971 A CN102853971 A CN 102853971A
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- pipe
- impermeability test
- shaped pipe
- pressing plate
- hydraulic expanding
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Abstract
The invention relates to a device for testing the sealing performance of a hydraulic expansion pipe. The device is used for testing the sealing performance at the expansion joint of a U-shaped pipe and a pipe plate, and comprises a pull rod component, a press plate assembly and a seal plug assembly, wherein the press plate assembly is connected with the top end of the pull rod assembly; the seal plug assembly is arranged at the top end of the U-shaped pipe; a plurality of pipe holes are uniformly formed around the U-shaped pipe and are formed in the pipe plate; the pull rod assembly comprises a plurality of pull rods respectively penetrating the pipe holes in the pipe plate; and the press plate assembly comprises a press plate arranged at the top end of the pipe plate and a round pipe connected with the press plate and sleeved with the outer part of the U-shaped pipe. Through the invention, the accurate and effective sealing performance testing is conducted on the expansion joint effect between the U-shaped pipe and the pipe plate, and meanwhile, the device can effectively avoid deformation of the U-shaped pipe, and minimizes the damage rate of the U-shaped pipe. The device has a simple structure, is convenient to operate, can be repeatedly used, and is good in sealing performance.
Description
Technical field
The present invention relates to a kind of device for the hydraulic expanding tube impermeability test, refer in particular to a kind of being applied in the nuclear power generating equipment manufacture process, the leak tightness test device to the swelling effect of pipe tube sheet is verified belongs to the frock technical field.
Background technology
Steam generator is the key equipment in nuclear power station one loop, and its function is that the heat with catalyst carrier in the reactor is passed to secondary circuit, makes secondary circuit produce the steam of certain pressure, with pushing turbine work.Catalyst carrier in the steam generator had afterwards both played obstruct radioactive effect with the tube bank (some pipes) of placing catalyst carrier with tube plate expanded-connecting with radioactivity, possessed again the function of conduction heat.Therefore, in the nuclear power generating equipment manufacture process, whether can satisfy technical requirement to after tube bank and the tube sheet swelling, except verifying with the method for pulling-out force test, need simultaneously the effect after method with impermeability test further confirms the swelling of pipe tube sheet.Therefore, the research and development of the method frock, in the nuclear power manufacture process in occupation of certain critical role.
Described sealing test method is that the clearance seal performance of pipe is tested and checked, the method that adopts is to use to add 5% organic red demineralized water and check do the hydraulic testing; The minimum pressure that is applied to tube sheet two side clearances should be 5Mpa(51Kg/cm
2); In the infiltration situation of a side of tubular specimen check fluid, the seepage velocity of fluid should be equal to or less than 40mm/min, at least 20 minutes dwell times; Could judge that so the result who draws impermeability test satisfies technical requirement after tube bank and the tube sheet swelling.
Therefore, in actual production and using, provide a kind of desirable frock that pipe is carried out impermeability test to be very important, it must be easy to operate, good sealing effect, and to pipe damage is reduced to minimum.
Summary of the invention
The purpose of this invention is to provide a kind of device for the hydraulic expanding tube impermeability test, can carry out accurately effectively impermeability test to the expanded joint effect between the U-shaped tube and tube plate, can effectively avoid U-shaped pipe to deform simultaneously, will be down to minimum to the damage of U-shaped pipe; And this apparatus structure is simple, and is easy to operate, reusable, good sealing effect.
For achieving the above object, the invention provides a kind of device for the hydraulic expanding tube impermeability test, it is used for impermeability test is carried out in the joint behind the U-shaped tube and tube plate expanded joint, comprise rod assembly, be connected the Anchor plate kit that arranges and the sealing-plug assembly that is arranged on described U-shaped pipe top with the top of described rod assembly; Wherein, evenly be provided with several pores at described tube sheet around the U-shaped pipe, described rod assembly comprises several pull bars, and it is located in respectively in each pore on the tube sheet; Described Anchor plate kit comprises the pressing plate that is arranged on the tube sheet top, and the pipe that is connected and is set in described U-shaped pipe outside with described pressing plate.
The bottom of described pull bar is by arranging packing ring and utilizing nut to be connected with described tube sheet.
Be provided with seal groove on the contacted end face of described pressing plate and tube sheet, be provided with an O RunddichtringO in the described seal groove.
The center of described pressing plate is provided with the annulus hole that the pore size with described pipe is complementary, described pipe insert in this annulus hole and with described pressing plate by being welded to connect.
The edge of described pressing plate evenly is provided with several connecting holes, and each connecting hole on the pressing plate is passed respectively on the top of each pull bar, and utilizes the attaching nut to be connected with described tube sheet and pressing plate.
Further, connect by spot welding between described attaching nut and the pull bar upper end.
Described Anchor plate kit also comprises the fittings body that is arranged on the pipe top, between this fittings body and the described pipe by being welded to connect.
Be provided with on the described fittings body for the water supply connector that connects high-pressure hose and valve, and the pressure detection joint that is used for the Bonding pressure table.
Described sealing-plug assembly comprises plug, and it is inner that its insertion is arranged on the sealing cock body; The sealing plug assembly also comprises the 2nd O RunddichtringO, and it is arranged on described sealing cock body top, and the pore of its size and described U-shaped pipe is complementary; Compact heap, it is arranged on described the 2nd O RunddichtringO top, and the bottom of this compact heap is tapered; Setting nut, it is arranged on described compact heap top and tightens.
Device for the hydraulic expanding tube impermeability test provided by the present invention, can carry out accurately effectively impermeability test to the expanded joint effect between the U-shaped tube and tube plate, simultaneously can effectively avoid U-shaped pipe to deform, will be down to the damage of U-shaped pipe minimum, the quality of Effective Raise product facility.
Device for the hydraulic expanding tube impermeability test provided by the present invention, simple in structure, easy to operate, good sealing effect, and reusable, reduce processing and maintenance cost, be the stronger tool using of a kind of practicality.
Description of drawings
Fig. 1 is the structural representation of the device that is used for the hydraulic expanding tube impermeability test among the present invention;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of the Anchor plate kit among the present invention;
Fig. 5 is the structural representation of the pressing plate among the present invention;
Fig. 6 is the structural representation of the sealing-plug assembly among the present invention.
Embodiment
Below in conjunction with Fig. 1～Fig. 6, describe a preferred embodiment of the present invention in detail.
In the manufacture process of nuclear power generating equipment steam generator, need to will carry out expanded joint between U-shaped pipe 1 and the tube sheet 2.As shown in Figure 1, be the structural representation of the device for the hydraulic expanding tube impermeability test provided by the present invention, it is used for impermeability test is carried out in the joint behind U-shaped pipe 1 and tube sheet 2 expanded joints.The sealing test unit comprises rod assembly, is connected the Anchor plate kit that arranges with the top of described rod assembly, and the sealing-plug assembly 7 that is arranged on described U-shaped pipe 1 top; Wherein, as shown in Figure 2, evenly be provided with 4 pores at described tube sheet 2 around U-shaped pipe 1, described rod assembly comprises 4 pull bars 3, and it is located in respectively in each pore on the tube sheet 2; Such as Fig. 1, Fig. 3 and shown in Figure 4, described Anchor plate kit comprises the pressing plate 4 that is arranged on tube sheet 2 tops, and is connected and is set in the pipe 5 of described U-shaped pipe 1 outside with described pressing plate 4.
The bottom of described pull bar 3 is by arranging packing ring and utilizing nut to be connected with described tube sheet 2.
As shown in Figure 4, be provided with seal groove on described pressing plate 4 and the tube sheet 2 contacted end faces, be provided with an O RunddichtringO 43 in the described seal groove.As shown in Figure 5, the center of described pressing plate 4 is provided with the annulus hole 41 that the pore size with described pipe 5 is complementary, described pipe 5 insert in this annulus hole 41 and with described pressing plate 4 by being welded to connect, and guarantee the boxing height less than 2mm so that weld firm.The edge of described pressing plate 4 evenly is provided with 4 connecting holes 42, and each connecting hole 42 on the pressing plate 4 is passed respectively on the top of described 4 pull bars 3, and utilizes the attaching nut to be connected with described tube sheet 2 and pressing plate 4.Further, in order to guarantee the reliable connection between described pull bar 3, tube sheet 2 and the pressing plate 4, can be to carrying out spot welding between attaching nut and pull bar 3 upper ends in case spline be moving.
As shown in Figure 4, described Anchor plate kit also comprises the fittings body 6 that is arranged on pipe 5 tops, and by being welded to connect, and its fillet weld must through welding and to carry out defect detecting test qualified between this fittings body 6 and the described pipe 5.Be provided with water supply connector 61 and pressure detection joint 62 on the described fittings body 6; Wherein, described water supply connector 61 is used for connecting high-pressure hose and valve, is used for water inlet and suppresses in impermeability test; Described pressure detection joint 62 is used for the Bonding pressure table, observes pressure changing by tensimeter in impermeability test.
As shown in Figure 6, described sealing-plug assembly 7 comprises plug 71, and its insertion is arranged on sealing cock body 72 inside; The sealing plug assembly also comprises the 2nd O RunddichtringO 73, and it is arranged on described sealing cock body 72 tops, and the pore of its size and described U-shaped pipe 1 is complementary; Compact heap 74, it is arranged on described the 2nd O RunddichtringO 73 tops, and the bottom of this compact heap 74 is tapered; Setting nut 75, it is arranged on described compact heap 74 tops and tightens; Regulate the seal clearance of the 2nd O RunddichtringO 73 by the degree of tightening of adjusting described setting nut 75, thereby prevent that the water in the impermeability test process from flowing into from the U-shaped pipe is outside.
Below describing the device for the hydraulic expanding tube impermeability test provided by the present invention in detail is how impermeability test to be carried out in the joint behind U-shaped pipe 1 and tube sheet 2 expanded joints.At first, the top that sealing-plug assembly 7 is arranged on U-shaped pipe 1 seals; Then will add 5% organic red demineralized water by in the formed seal chamber between the water supply connector 61 introducing round tube inner walls 5 on the fittings body 6 and U-shaped pipe 1 outer wall by hand-operating pressure pump.In this process, sealing-plug assembly 7 can prevent effectively that test water from flowing into the inside of U-shaped pipe 1.Because the 2nd O RunddichtringO 73 in the sealing-plug assembly 7 is complementary with the pore of U-shaped pipe 1, and utilize setting nut 75 to compact heap 74 application of forces, bottom tapering part by compact heap 74 is located the 2nd O RunddichtringO 73, utilize simultaneously the caoutchouc elasticity of the 2nd O RunddichtringO 73, can will have the test water of pressure firmly to block.
Next, continue to utilize hand-operating pressure pump to introduce test water and suppress, after manometric reading reaches 5Mpa, keep current pressure constant and lasting 20 minutes.If the leakage situation does not appear in the joint of U-shaped pipe 1 and tube sheet 2, then impermeability test finishes and success of the test, shows that U-shaped pipe 1 and the expanded joint of tube sheet 2 meet the sealing technical requirement.Then utilize according to the method described above the device for the hydraulic expanding tube impermeability test provided by the present invention that other U-shaped pipes and tube plate expanded-connecting are carried out impermeability test.
Should be noted that in the impermeability test process that because the small volume of the seal chamber between pipe and the U-shaped pipe should note boosting can not be too fast when carrying out the suppressing of test water, otherwise can make the tensimeter damage or so that its reading make a mistake.
Device for the hydraulic expanding tube impermeability test provided by the present invention, can carry out accurately effectively impermeability test to the expanded joint effect between the U-shaped tube and tube plate, simultaneously can effectively avoid U-shaped pipe to deform, will be down to the damage of U-shaped pipe minimum, the quality of Effective Raise product facility.
Device for the hydraulic expanding tube impermeability test provided by the present invention, simple in structure, easy to operate, good sealing effect, and reusable, reduce processing and maintenance cost, be the stronger tool using of a kind of practicality.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a device that is used for the hydraulic expanding tube impermeability test is used for impermeability test is carried out in the joint behind U-shaped pipe (1) and tube sheet (2) expanded joint; It is characterized in that, comprise rod assembly, be connected the Anchor plate kit that arranges with the top of described rod assembly, and the sealing-plug assembly (7) that is arranged on described U-shaped pipe (1) top;
Evenly be provided with several pores at described tube sheet (2) around U-shaped pipe 1, described rod assembly comprises several pull bars (3), and it is located in respectively in each pore on the tube sheet (2);
Described Anchor plate kit comprises the pressing plate (4) that is arranged on tube sheet (2) top, and the pipe (5) that is connected and is set in described U-shaped pipe (1) outside with described pressing plate (4).
2. the device for the hydraulic expanding tube impermeability test as claimed in claim 1 is characterized in that, the bottom of described pull bar (3) is by arranging packing ring and utilizing nut to be connected with described tube sheet (2).
3. the device for the hydraulic expanding tube impermeability test as claimed in claim 1 is characterized in that, is provided with seal groove on described pressing plate (4) and the contacted end face of tube sheet (2), is provided with an O RunddichtringO (43) in the described seal groove.
4. the device for the hydraulic expanding tube impermeability test as claimed in claim 3, it is characterized in that, the center of described pressing plate (4) is provided with the annulus hole (41) that the pore size with described pipe (5) is complementary, described pipe (5) insert in this annulus hole (41) and with described pressing plate (4) by being welded to connect.
5. the device for the hydraulic expanding tube impermeability test as claimed in claim 4, it is characterized in that, the edge of described pressing plate (4) evenly is provided with several connecting holes (42), each connecting hole (42) on the pressing plate (4) is passed respectively on the top of each pull bar (3), and utilizes the attaching nut to be connected with described tube sheet (2) and pressing plate (4).
6. the device for the hydraulic expanding tube impermeability test as claimed in claim 5 is characterized in that, described attaching nut and pull bar (3) connect by spot welding between the upper end.
7. the device for the hydraulic expanding tube impermeability test as claimed in claim 1 is characterized in that, described Anchor plate kit also comprises the fittings body (6) that is arranged on pipe (5) top, between this fittings body (6) and the described pipe (5) by being welded to connect.
8. the device for the hydraulic expanding tube impermeability test as claimed in claim 7, it is characterized in that, be provided with on the described fittings body (6) for the water supply connector (61) that connects high-pressure hose and valve, and the pressure detection joint (62) that is used for the Bonding pressure table.
9. the device for the hydraulic expanding tube impermeability test as claimed in claim 1 is characterized in that, described sealing-plug assembly (7) comprises plug (71), and its insertion is arranged on sealing cock body (72) inside; Sealing plug assembly (7) also comprises:
The 2nd O RunddichtringO (73), it is arranged on described sealing cock body (72) top, and the pore of its size and described U-shaped pipe (1) is complementary;
Compact heap (74), it is arranged on described the 2nd O RunddichtringO (73) top, and the bottom of this compact heap (74) is tapered;
Setting nut (75), it is arranged on described compact heap (74) top and tightens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326129.2A CN102853971B (en) | 2012-09-06 | 2012-09-06 | Device for testing sealing performance of hydraulic expansion pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326129.2A CN102853971B (en) | 2012-09-06 | 2012-09-06 | Device for testing sealing performance of hydraulic expansion pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102853971A true CN102853971A (en) | 2013-01-02 |
| CN102853971B CN102853971B (en) | 2015-05-20 |
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ID=47400754
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210326129.2A Active CN102853971B (en) | 2012-09-06 | 2012-09-06 | Device for testing sealing performance of hydraulic expansion pipe |
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| Country | Link |
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| CN (1) | CN102853971B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853971B (en) * | 2012-09-06 | 2015-05-20 | 上海电气核电设备有限公司 | Device for testing sealing performance of hydraulic expansion pipe |
| CN106679896A (en) * | 2017-02-28 | 2017-05-17 | 哈电集团（秦皇岛）重型装备有限公司 | Helium leak detection device of minitype pipe tube sheet welding specimen |
| CN107238473A (en) * | 2017-07-27 | 2017-10-10 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of sealing device for water pressure test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020066490A1 (en) * | 2000-12-04 | 2002-06-06 | Roderick Charles Brewis | Pipe end fittings |
| JP2003028747A (en) * | 2002-05-15 | 2003-01-29 | Bridgestone Corp | Device for sealing container |
| CN202305129U (en) * | 2011-10-26 | 2012-07-04 | 埃泰克汽车电子(芜湖)有限公司 | Quick connector for air tightness test |
| CN102589810A (en) * | 2012-02-07 | 2012-07-18 | 哈尔滨锅炉厂有限责任公司 | Novel testing device and testing method for sealing performance of pipe plate and heat exchange pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853971B (en) * | 2012-09-06 | 2015-05-20 | 上海电气核电设备有限公司 | Device for testing sealing performance of hydraulic expansion pipe |
-
2012
- 2012-09-06 CN CN201210326129.2A patent/CN102853971B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020066490A1 (en) * | 2000-12-04 | 2002-06-06 | Roderick Charles Brewis | Pipe end fittings |
| JP2003028747A (en) * | 2002-05-15 | 2003-01-29 | Bridgestone Corp | Device for sealing container |
| CN202305129U (en) * | 2011-10-26 | 2012-07-04 | 埃泰克汽车电子(芜湖)有限公司 | Quick connector for air tightness test |
| CN102589810A (en) * | 2012-02-07 | 2012-07-18 | 哈尔滨锅炉厂有限责任公司 | Novel testing device and testing method for sealing performance of pipe plate and heat exchange pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853971B (en) * | 2012-09-06 | 2015-05-20 | 上海电气核电设备有限公司 | Device for testing sealing performance of hydraulic expansion pipe |
| CN106679896A (en) * | 2017-02-28 | 2017-05-17 | 哈电集团（秦皇岛）重型装备有限公司 | Helium leak detection device of minitype pipe tube sheet welding specimen |
| CN106679896B (en) * | 2017-02-28 | 2023-05-05 | 哈电集团（秦皇岛）重型装备有限公司 | Helium leakage detection device for small tube sheet welding test piece |
| CN107238473A (en) * | 2017-07-27 | 2017-10-10 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of sealing device for water pressure test |
| CN107238473B (en) * | 2017-07-27 | 2023-10-24 | 哈电集团（秦皇岛）重型装备有限公司 | Hydrostatic test sealing device |
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| Publication number | Publication date |
|---|---|
| CN102853971B (en) | 2015-05-20 |
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