CN202661256U - Pulling-out force testing device - Google Patents
Pulling-out force testing device Download PDFInfo
- Publication number
- CN202661256U CN202661256U CN 201220248959 CN201220248959U CN202661256U CN 202661256 U CN202661256 U CN 202661256U CN 201220248959 CN201220248959 CN 201220248959 CN 201220248959 U CN201220248959 U CN 201220248959U CN 202661256 U CN202661256 U CN 202661256U
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- pulling
- out force
- force test
- tube
- plug
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Abstract
The utility model relates to a pulling-out force testing device which is used for sequentially performing pulling-out force testing on a plurality of tubes in samples which are formed after expanded connection of tubes in a tube bundle assembly and tube sheets. The device comprises a clamping and fixing tool, a positioning core rod and a connection chuck; a samples is fixedly arranged on the clamping and fixing tool; the clamping and fixing tool is embedded into a bench screw which is positioned on a table top of a drawing machine and is clamped and fixed; the positioning core rod comprises a clamping section core rod and an insertion section core rod which are integrated and connected; the insertion section core rod is inserted into a tube which is needed to be subjected to pulling-out force testing; and the connection chuck is sleeved outside the clamping section core rod and tightly clamps the clamping section core rod, and is connected with a pull head of the drawing machine. By the pulling-out force testing device, the expanded connection effect between the tubes and the tube sheets is subjected to pulling-out force testing, the deformation of the tube can be effectively avoided, and the damage to the tube can be reduced to maximum extent; the device is simple in structure, convenient to operate, and wide in application range, and can be used repeatedly; and processing and maintenance cost is reduced.
Description
Technical field
The utility model relates to a kind of pulling-out force test unit, refers in particular to a kind of pulling-out force test unit of in the nuclear power generating equipment swelling effect of pipe tube sheet being verified of being applied to, and 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 (comprising 8000～10000 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, to whether satisfying technical requirement behind tube bank and the tube plate expanded-connecting, need to verify with the method for pulling-out force test.Therefore, the research and development of the method frock, in the nuclear power manufacture process in occupation of certain critical role.
In the manufacture process of steam generator, carry out expanded joint owing to adopting the method for mechanical-hydraulic between tube bank and the tube sheet, according to standard, in tube bank with after tube sheet finishes expanded joint, each pipe that expanded joint is good need to carry out the test of pulling-out force successively when doing qualification test, verify the effect of expand tube with this.
Therefore, in actual production and using, provide a kind of desirable frock that pipe is carried out the pulling-out force test to be very important, it must be easy to operate, good connecting effect, and to pipe damage is reduced to minimum.
The utility model content
The purpose of this utility model provides a kind of pulling-out force test unit, and it can effectively avoid pipe to deform when the expanded joint effect between the tube-to-tube sheet connection being carried out the pulling-out force test, will be down to minimum to the damage of pipe; And this apparatus structure is simple, and is easy to operate, reusable, reduces the processing maintenance cost, applied widely.
For achieving the above object, the utility model provides a kind of pulling-out force test unit, and it is used for the some pipes in the sample that forms behind the tube bundle assembly tube-to-tube sheet connection expanded joint are carried out the pulling-out force test successively; This pulling-out force test unit comprises and grips frock, location mandril and connecting clip; The sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixedly installed on described gripping on the frock; The described frock that grips embeds and to be arranged on the bench vice that is positioned on the drawing machine table top, and by described bench vice this is gripped frock and be fixedly clamped; Described location mandril comprises one-body molded and interconnective gripping section plug and inserting paragraph plug, and described inserting paragraph plug inserts and is arranged in the pipe that need carry out the pulling-out force test; Described connecting clip is set in described gripping section plug outside and it is clamped, and this connecting clip is connected with the pull head of drawing machine.
The described frock that grips is that the T clevis is held fixing tool.
The sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixed by welding in described gripping on the frock.
Described connecting clip is inverted U-shaped connecting clip; The pull head size of the external diameter of this connecting clip and drawing machine matches.
The external diameter of described inserting paragraph plug and the internal diameter of described pipe match.
The external diameter of described inserting paragraph plug is less than the external diameter of gripping section plug, forms step in the junction of described gripping section plug and inserting paragraph plug, and in the time of in the inserting paragraph plug inserts pipe, the top of described step and pipe is against flushing.
Described inserting paragraph plug inserts behind the pipe and is connected and fixed by register pin between the pipe.
Offer a pair of through hole on the described inserting paragraph plug; Described a pair of through hole is mutually vertically and between the upper and lower every setting; After in described inserting paragraph plug inserts pipe, by a pair of register pin between the upper and lower every being the described inserting paragraph plug of cross-shaped connection and pipe.
The front end of described register pin is provided with the guiding cone.
Pulling-out force test unit provided by the utility model, when the expanded joint effect between the tube-to-tube sheet connection being carried out the pulling-out force checking, can effectively avoid pipe to deform, pulling-out force test is down to the damage of pipe minimum, the quality of Effective Raise product facility.
Pulling-out force test unit provided by the utility model, simple in structure, easy to operate, and reusable, reduce processing and maintenance cost; On common drawing machine, can realize the pipe of various different lengths is carried out the pulling-out force test, applied widely.
Description of drawings
Fig. 1 is the sample structure figure that need carry out the pulling-out force test in the steam generator in the tube bundle assembly behind the tube-to-tube sheet connection expanded joint;
Fig. 2 is the structural representation of the pulling-out force test unit in the utility model;
Fig. 3 is the cross-sectional view of the anti-deformation plug in the utility model;
Fig. 4 is the structural representation of the register pin in the utility model.
Embodiment
Below in conjunction with Fig. 1～Fig. 4, describe a preferred embodiment of the present utility model in detail.
As shown in Figure 1, in the manufacture process of nuclear power generating equipment steam generator, need to adopt the method for mechanical-hydraulic to carry out expanded joint with placing between the tube bank of catalyst carrier and the tube sheet 20, to play the effect that intercepts the radioactivity catalyst carrier, possess again the function of conduction heat simultaneously.Each pipe 10 of finishing expanded joint then need to carry out the test of pulling-out force successively with the expanded joint effect of checking pipe 10.Therefore, the utility model provides a kind of pulling-out force test unit, the architectural feature that below will describe described pulling-out force test unit in detail with and the method for how sample that forms behind the tube-to-tube sheet connection expanded joint in the tube bundle assembly as shown in Figure 1 being carried out the pulling-out force test.
As shown in Figure 2, be the structural representation of pulling-out force test unit provided by the utility model, it is used for the some pipes 10 in the sample that forms behind the tube bundle assembly tube-to-tube sheet connection expanded joint are as shown in Figure 1 carried out the pulling-out force test successively; This pulling-out force test unit comprises and grips frock 1, location mandril 2 and connecting clip 3; The sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixedly installed on described gripping on the frock 1; The described frock 1 of gripping embeds and is arranged on the bench vice that is positioned on drawing machine 30 table tops, and by described bench vice this is gripped frock 1 and be fixedly clamped; Described location mandril 2 comprises one-body molded and interconnective gripping section plug 23 and inserting paragraph plug 24(as shown in Figure 3), described inserting paragraph plug 24 inserts and is arranged in the pipe 10 that need carry out the pulling-out force test; Described connecting clip 3 is set in described gripping section plug 23 outsides and it is clamped, and this connecting clip 3 is connected with the pull head of drawing machine 30.
Wherein, the described frock 1 that grips is held fixing tool for the T clevis, can be general on the bench vice of any drawing machine.
The sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixed by welding in described gripping on the frock 1, and the intensity of assurance weld seam can be born the tensile force requirement in the pulling-out force test.
Described connecting clip 3 is inverted U-shaped connecting clip; The pull head size of the external diameter of this connecting clip 3 and drawing machine 30 matches, and can carry out design configurations according to described pull head size.
As shown in Figure 3, the internal diameter of the external diameter of described inserting paragraph plug 24 and described pipe 10 matches, and the external diameter of described inserting paragraph plug 24 is less than the external diameter of gripping section plug 23, therefore at the junction formation step 22 of described gripping section plug 23 with inserting paragraph plug 24, when inserting paragraph plug 24 inserts pipe 10 when interior, the top of described step 22 and pipe 10 is against flushing, so that gripping section plug 23 can't insert in the pipe 10.
Further, described inserting paragraph plug 24 inserts behind the pipe 10 and between the pipe 10 and is connected and fixed by register pin 4.Offer a pair of through hole 21 at described inserting paragraph plug 24, described a pair of through hole 21 is mutually vertically and between the upper and lower every setting; Corresponding position on described pipe 10 also offers a pair of through hole 40(as shown in Figure 1); When described inserting paragraph plug 24 insert pipe 10 interior after, by a pair of register pin 4 between the upper and lower every being the described inserting paragraph plug 24 of cross-shaped connection and pipe 10.
As shown in Figure 4, the front end of described register pin 4 is provided with guiding cone 41, and it plays effective guide effect when the through hole 21 of aiming at and pushing on the described inserting paragraph plug 24.The length of described guiding cone 41 depends on diameter and the wall thickness of pipe 10.
Described location mandril 2 and register pin 4 adopt 42Cr
2The material of MoVA or 42CrMo is made, and reaches certain hardness and corresponding combination property after need heat-treating, to satisfy the tensile force requirement in the pulling-out force test.
Below describing pulling-out force test unit provided by the utility model in detail is how the sample that forms behind the tube-to-tube sheet connection expanded joint in the tube bundle assembly as shown in Figure 1 to be carried out the pulling-out force test.At first, the T clevis is held fixing tool 1 embed and be arranged on the bench vice that is positioned on drawing machine 30 table tops, and by described bench vice this T clevis is held fixing tool 1 and be fixedly clamped.The sample that then will form behind the tube-to-tube sheet connection expanded joint in the tube bundle assembly as shown in Figure 1 is arranged on the T clevis and holds on the fixing tool 1 by being welded and fixed.Then the inserting paragraph plug 24 of location mandril 2 is inserted that first carries out in the pipe 10 of pulling-out force test on the samples, until the step 22 of the top of pipe 10 and location mandril 2 is against flushing.A pair of register pin 4 is passed respectively a pair of through hole 40 on the pipe 10 and a pair of through hole 21 on the inserting paragraph plug 24, between the upper and lower every being cross-shaped described inserting paragraph plug 24 and the pipe 10 of being connected and fixed.Afterwards, connecting clip 3 is set in described gripping section plug 23 outside and it is clamped, and the pull head of drawing machine 30 is clamped described connecting clip 3.
And then just begin pipe 10 is carried out the pulling-out force test, the pull head of drawing machine 30 clamps connecting clip 3 and the application of force upwards stretches it, the pulling force that applies is passed to pipe 10 by connecting clip 3 and location mandril 2, location mandril 2 shape to pipe 10 in the pulling-out force test has positioning function, can guarantee that any distortion does not occur pipe 10.When reaching the numerical value of technological requirement regulation, pulling force (is generally 15 ~ 20KN), then finish the pulling-out force test of current pipe 10, if after finishing the pulling-out force test, do not occur any gap between pipe 10 and the tube sheet 20 or be out of shape the situations such as loosening, the result shows that the expanded joint performance between pipe 10 and the tube sheet satisfies technical requirement so.According to above-mentioned steps, repeat the remaining tubing in the sample is carried out the pulling-out force test successively, whether satisfy technical requirement to verify the expanded joint effect between the every tube-to-tube sheet connection.
Pulling-out force test unit provided by the utility model, when the expanded joint effect between the tube-to-tube sheet connection being carried out the pulling-out force checking, can effectively avoid pipe to deform, pulling-out force test is down to the damage of pipe minimum, the quality of Effective Raise product facility.
Pulling-out force test unit provided by the utility model, simple in structure, easy to operate, and reusable, reduce processing and maintenance cost; On common drawing machine, can realize the pipe of various different lengths is carried out the pulling-out force test, applied widely.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (9)
1. a pulling-out force test unit is used for the some pipes (10) in the sample that forms behind the tube bundle assembly tube-to-tube sheet connection expanded joint are carried out the pulling-out force test successively; It is characterized in that, this pulling-out force test unit comprises and grips frock (1), location mandril (2) and connecting clip (3);
The sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixedly installed on described gripping on the frock (1);
The described frock (1) that grips embeds and to be arranged on the bench vice that is positioned on drawing machine (30) table top, and by described bench vice this is gripped frock (1) and be fixedly clamped;
Described location mandril (2) comprises one-body molded and interconnective gripping section plug (23) and inserting paragraph plug (24), and described inserting paragraph plug (24) inserts and is arranged in the pipe (10) that need carry out the pulling-out force test;
Described connecting clip (3) is set in described gripping section plug (23) outside and with its clamping, this connecting clip (3) is connected with the pull head of drawing machine (30).
2. pulling-out force test unit as claimed in claim 1 is characterized in that, the described frock (1) that grips is held fixing tool for the T clevis.
3. pulling-out force test unit as claimed in claim 2 is characterized in that, the sample that forms behind the tube-to-tube sheet connection expanded joint in the described tube bundle assembly is fixed by welding in described gripping on the frock (1).
4. pulling-out force test unit as claimed in claim 1 is characterized in that, described connecting clip (3) is inverted U-shaped connecting clip; The pull head size of the external diameter of this connecting clip (3) and drawing machine (30) matches.
5. pulling-out force test unit as claimed in claim 1 is characterized in that, the internal diameter of the external diameter of described inserting paragraph plug (24) and described pipe (10) matches.
6. pulling-out force test unit as claimed in claim 5, it is characterized in that, the external diameter of described inserting paragraph plug (24) is less than the external diameter of gripping section plug (23), at the junction formation step (22) of described gripping section plug (23) with inserting paragraph plug (24), in the time of in inserting paragraph plug (24) inserts pipe (10), the top of described step (22) and pipe (10) is against flushing.
7. pulling-out force test unit as claimed in claim 5 is characterized in that, described inserting paragraph plug (24) inserts behind the pipe (10) and between the pipe (10) and is connected and fixed by register pin (4).
8. pulling-out force test unit as claimed in claim 7 is characterized in that, offers a pair of through hole (21) on the described inserting paragraph plug (24);
Described a pair of through hole (21) is mutually vertically and between the upper and lower every setting;
After described inserting paragraph plug (24) inserts in the pipe (10), by a pair of register pin (4) between the upper and lower every being the described inserting paragraph plug of cross-shaped connection (24) and pipe (10).
9. pulling-out force test unit as claimed in claim 8 is characterized in that, the front end of described register pin (4) is provided with guiding cone (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248959 CN202661256U (en) | 2012-05-30 | 2012-05-30 | Pulling-out force testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248959 CN202661256U (en) | 2012-05-30 | 2012-05-30 | Pulling-out force testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661256U true CN202661256U (en) | 2013-01-09 |
Family
ID=47456156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220248959 Expired - Lifetime CN202661256U (en) | 2012-05-30 | 2012-05-30 | Pulling-out force testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680225A (en) * | 2012-05-30 | 2012-09-19 | 上海电气核电设备有限公司 | Pulling-out force test device |
| CN106979891A (en) * | 2017-03-31 | 2017-07-25 | 江苏省特种设备安全监督检验研究院 | A kind of pull-off strength performance test methods of Zr pipes tube sheet joint |
| CN109855853A (en) * | 2019-03-04 | 2019-06-07 | 东方电气集团东方锅炉股份有限公司 | Test specimen, expanded joint pulling-out force test device and its application method for the test of expanded joint pulling-out force |
-
2012
- 2012-05-30 CN CN 201220248959 patent/CN202661256U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680225A (en) * | 2012-05-30 | 2012-09-19 | 上海电气核电设备有限公司 | Pulling-out force test device |
| CN106979891A (en) * | 2017-03-31 | 2017-07-25 | 江苏省特种设备安全监督检验研究院 | A kind of pull-off strength performance test methods of Zr pipes tube sheet joint |
| CN109855853A (en) * | 2019-03-04 | 2019-06-07 | 东方电气集团东方锅炉股份有限公司 | Test specimen, expanded joint pulling-out force test device and its application method for the test of expanded joint pulling-out force |
| CN109855853B (en) * | 2019-03-04 | 2024-02-02 | 东方电气集团东方锅炉股份有限公司 | Test piece for expansion joint pull-out force test, expansion joint pull-out force test device 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |