CN202182850U - Hydraulic test device for large-diameter thick-wall pipe joint - Google Patents
Hydraulic test device for large-diameter thick-wall pipe joint Download PDFInfo
- Publication number
- CN202182850U CN202182850U CN2011202141650U CN201120214165U CN202182850U CN 202182850 U CN202182850 U CN 202182850U CN 2011202141650 U CN2011202141650 U CN 2011202141650U CN 201120214165 U CN201120214165 U CN 201120214165U CN 202182850 U CN202182850 U CN 202182850U
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- Prior art keywords
- pipe adapter
- shrouding
- lug boss
- pipe joint
- hydraulic test
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a hydraulic test device for a large-diameter thick-wall pipe joint. During forging of the large-diameter thick-wall pipe joint, a pipe joint lug boss is forged on the internal diameter of the pipe joint, a seal plate is welded on the lug boss, a clearance between the lug boss and the seal plate is subjected to seal welding, and as the lug boss and the pipe joint are integrated, a stronger acting force can be born, and the seal plate is prevented from dashing off due to overlarge pressure. At the moment, the welding seam only plays a sealing role, the weld bead height is far smaller than that of a traditional hydraulic test device, and the welding cost is greatly lowered. Then a hydraulic test is performed. After the hydraulic test is completed, the lug boss is cut off, and the inner wall of the pipe joint at the lug boss is machined to the designed dimension, so that the hydraulic test can be safely completed, materials are saved, the forging cost of the pipe joint and the welding cost of the seal plate are lowered, meanwhile, the preparation period of the hydraulic test is shortened, and the production cost is cut.
Description
Technical field
The utility model relates to a kind of water test unit that is used for the major-diameter thick-wall pipe adapter.
Background technology
The hydraulic testing is one of requisite technology that checks the quality of the products in the industrial pipeline manufacture process; With the station boiler is example; Similar boiler elements such as drum, collection case, attemperator must carry out the hydraulic testing to it when making completion, to check whether its material and weld bond bearing requirements meet design requirement and national pressure vessel is checked and accepted relevant rules.
In manufacturing plant, produce the boiler element of accomplishing, usually be welded with the major-diameter thick-wall pipe adapter on it, when carrying out the hydraulic testing, must carry out shutoff it.Fig. 1 is traditional water test unit.When making pipe adapter 2 ', at first its pipe end is manufactured and have certain pipe end length allowance 5 ', pipe adapter 2 ' is welded on pipeline or the pressure vessel body 1 ', and shrouding 3 ' is put into pipe adapter 2 ', and pipe adapter 2 is connected by weld seam 4 ' with shrouding 3 '.After the hydraulic testing was accomplished, the pipe adapter 2 ' part that will contain shrouding 3 ' prescinded, and the pipe adapter groove is carried out machine work, makes it reach designing requirement.
In traditional hydraulic test method, shrouding 3 ' plays plugging action, and weld seam 4 ' is shrouding 3 ' and sealing fixedly.This water test unit has significant disadvantages.Because hydraulic test pressure is far above the working pressure of boiler element; The thickness of the shrouding 3 ' that calculates is quite big; The weld seam 4 ' that plays fixedly shrouding 3 ' effect simultaneously is highly also quite big, and pipe adapter 6 ' pipe end length allowance 5 ' also increases with both increases.The major-diameter thick-wall pipe adapter adopts the method for forging usually in reality is made, it is high to forge cost, and the length of forging length more will cause forging cost up, and difficulty increases.This structure probably because huge pressure makes that the weld of pipe adapter 2 ' takes place to leak or shrouding 3 flies out, causes serious personnel casualty accidents if welding does not reach the weld bead height of designing requirement when the hydraulic testing.So traditional major-diameter thick-wall pipe adapter water test unit has drawbacks such as the big manufacturing cost height of welding job amount.
The utility model content
A kind of water test unit that is used for the major-diameter thick-wall pipe adapter that the utility model provides makes under the prerequisite that guarantees hydraulic testing safety, can reduce manufacturing cost greatly.
In order to achieve the above object, the utility model provides a kind of water test unit that is used for the major-diameter thick-wall pipe adapter, and this water test unit comprises pipe adapter lug boss and shrouding;
Described pipe adapter lug boss is arranged on the inwall of pipe adapter, with the pipe adapter forging molding.
Described shrouding is welded on the pipe adapter lug boss.
Described pipe adapter lug boss is the ring-type platform, and the centre of pipe adapter lug boss has through hole, and through hole is coaxial with pipe adapter.
The shape of the through hole on the shape of said shrouding and the pipe adapter lug boss is complementary, and can the through hole edge on the pipe adapter lug boss be covered under the shrouding fully after the shrouding completion in place.
Described water test unit also comprises auxiliary rod in place, and this auxiliary rod in place connects shrouding.
The utility model has the advantages that:
1, practices thrift blank material, reduce and forge cost;
2, weld bead height is little, only seals, and reduces wlding and workload;
3, the shrouding device can be recycled, and practices thrift the shrouding material;
4, the hydraulic testing preparatory period shortens;
5, after the hydraulic testing, few to the pipe adapter processing technology;
6, life cycle of the product shortens, and production cost reduces;
7, manufacturing process is ripe, simple;
8, safe and reliable.
Description of drawings
Fig. 1 is the structure cut-open view of water test unit in the background technology;
Fig. 2 is the structure cut-open view of major-diameter thick-wall pipe adapter among first embodiment;
Fig. 3 is the structure cut-open view that is used for the water test unit of major-diameter thick-wall pipe adapter among first embodiment;
Fig. 4 is the cut-open view of A-A direction among Fig. 3;
Fig. 5 is the structure cut-open view of major-diameter thick-wall pipe adapter among second embodiment;
Fig. 6 is the cut-open view of B-B direction among Fig. 5;
Fig. 7 is the structure cut-open view that is used for the water test unit of major-diameter thick-wall pipe adapter among second embodiment;
Fig. 8 is the cut-open view before the rotation of C-C direction shrouding among Fig. 7;
Fig. 9 is the postrotational cut-open view of C-C direction shrouding among Fig. 7;
Figure 10 is the structure cut-open view that is used for the water test unit of major-diameter thick-wall pipe adapter among the 3rd embodiment.
Embodiment
Following according to Fig. 2～Figure 10, specify the preferred embodiment of the utility model:
Like Fig. 3, Fig. 7 and shown in Figure 10, the utility model provides a kind of water test unit that is used for the major-diameter thick-wall pipe adapter, comprises pipe adapter lug boss 5 and shrouding 3, and this shrouding 3 is welded on the pipe adapter lug boss 5 through seal weld, forms weld seam 4.
Described pipe adapter lug boss 5 is arranged on the inwall of pipe adapter 2 (pipe adapter 2 is welded on the pipeline body 1), with pipe adapter 2 forging moldings.
Described pipe adapter lug boss 5 is to have certain thickness ring-type platform, and its thickness is not less than the required minimum wall thickness (MINI W.) of the hydraulic testing.The centre of pipe adapter lug boss 5 has through hole, and through hole is coaxial with pipe adapter 2.
The shape of the through hole on the shape of said shrouding 3 and the pipe adapter lug boss 5 is complementary; The size of shrouding 3 is greater than the size 1 ~ 3mm of the through hole on the pipe adapter lug boss 5, makes can the through hole edge on the pipe adapter lug boss 5 be covered fully shrouding 3 times after shrouding 3 completion in place.
Described water test unit also comprises auxiliary rod 6 in place, and this auxiliary rod 6 in place connects shrouding 3.
The length of pipe adapter can increase allowance required in the traditional water compression testing device, is machined directly to design length, because the major-diameter thick-wall pipe adapter forms for forging; So can process convexity quite easily, during the hydraulic testing, shrouding is welded on the convexity; Since protruding as a whole with pipe adapter, so it can bear very big acting force, prevent that shrouding from flying out too greatly because of pressure; At this moment; Weld seam only seals, and welds farsighted highly less than the weldering in the traditional water compression testing device, greatly reduces welding cost.
Utilize the utility model to be used for the hydraulic test method of major-diameter thick-wall pipe adapter, comprise following steps:
Step 1, forge major-diameter thick-wall pipe adapter 2, span port closer hammer welded pipe joint lug boss 5 in pipe adapter 2 according to size;
When shrouding 3 when pipeline body 1 end is put into pipe adapter 2, the shape of shrouding 3 must be able to guarantee that it gets in pipe adapter 2 smoothly; When an end that has a lug boss 5 from pipe adapter when shrouding 3 was put into pipe adapter 2, the shape of shrouding 3 must be able to guarantee that it is smoothly through the through hole on the pipe adapter lug boss 5;
When an end that has a lug boss 5 from pipe adapter is put into shrouding 3, shrouding is tilted through the through hole on the pipe adapter lug boss 5, place on the pipe adapter lug boss 5;
When an end that has a lug boss 5 from pipe adapter is put into shrouding 3,, then utilize auxiliary rod 6 in place that shrouding is tilted through the through hole on the pipe adapter lug boss 5, place on the pipe adapter lug boss 5 if be connected with auxiliary rod 6 in place on the shrouding 3;
Step 4, shrouding 3 is welded on the pipe adapter lug boss 5;
Step 6, pipe adapter lug boss 5 is cut off, shrouding 3 breaks away from pipe adapter 2 thereupon;
Step 7, pipe adapter 2 inwalls that will cut off behind the pipe adapter lug boss 5 are machined into design size;
Step 8, pipe adapter lug boss 5 is separated with shrouding 3;
Remove the residual welding slag on the shrouding 3, shrouding 3 can reuse;
If be connected with auxiliary rod 6 in place on the shrouding 3, then auxiliary rod 6 in place is separated with shrouding 3, auxiliary rod 6 in place can reuse.
So both safety is accomplished the hydraulic testing, and economical with materials has reduced the forging cost of pipe adapter and the welding cost of shrouding again, has shortened the hydraulic testing preparatory period simultaneously, has reduced the workload of pipe adapter recovery design size after the hydraulic testing.
Embodiment 1
As shown in Figure 2; Structure cut-open view for major-diameter thick-wall pipe adapter 2; Described major-diameter thick-wall pipe adapter 2 other structure when forging is processed according to design size; Only span port closer keeps convexity 5 as shown in Figure 2 in pipe adapter 2, and is of Fig. 4, through hole arranged and have certain thickness round platform in the middle of convexity 5 is processed into.When shrouding 3 when pipeline body 1 is put into pipe adapter 2, with protruding 5, this moment, weld seam 4 only sealed at position shown in Fig. 3 welding shrouding 3, the part carrying hydraulic testing that contact with shrouding 3 on protruding 5 is to the acting force of shrouding 3.Because protruding 5 is as a whole with pipe adapter 2, so it can bear very big acting force, can prevent that shrouding 3 from because of pressure flies out too greatly, having guaranteed the security of the hydraulic testing.The hydraulic testing after accomplishing is cut off convexity 5, and shrouding 3 breaks away from pipe adapter 2 thereupon, and pipe adapter 2 inwalls with protruding 5 places are machined into design size again.Simultaneously, convexity 5 is separated with shrouding 3, remove the residual welding slag on the shrouding 3, this moment, shrouding 3 can reuse.
As shown in Figure 5; Structure cut-open view for major-diameter thick-wall pipe adapter 2; Described major-diameter thick-wall pipe adapter 2 other structure when forging is processed according to design size; Only span port closer keeps convexity 5 as shown in Figure 5 in pipe adapter 2, when shrouding 3 can not be processed into as shown in Figure 6 similar oval-shaped through hole being arranged and have certain thickness round platform in the middle of protruding 5 when pipeline body 1 is put into pipe adapter 2.This moment play a part shutoff shrouding 3 shapes and the convexity 5 on shape of through holes similar, similar ellipse.During the hydraulic testing, as shown in Figure 7, from pipe adapter 2 ports one end shrouding 3 is tilted to put into, pass the through hole (as shown in Figure 8) on protruding 5, half-twist is placed (as shown in Figure 9) then.Welding shrouding 3 and convexity 5 in position shown in Fig. 7, this moment, weld seam 4 only sealed.After the hydraulic testing, convexity 5 is cut off, shrouding 3 breaks away from pipe adapter 2 thereupon, and pipe adapter 2 inwalls with protruding 5 places are machined into design size again.Simultaneously, convexity 5 is separated with shrouding 3, remove the residual welding slag on the shrouding 3, this moment, shrouding 3 can reuse.
Shown in figure 10, other step and embodiment 2 are identical.When pipe adapter 2 directions upwards or other factors cause shrouding 3 inconvenient when in place; Can on shrouding 3, connect auxiliary rod 6 in place; The through hole that utilizes auxiliary rod 6 in place that shrouding 3 is tilted to pass on protruding 5 with shrouding 3 from pipe adapter 2 ports one end, half-twist is placed then, welds then.After the hydraulic testing, convexity 5 is cut off, shrouding 3 breaks away from pipe adapter 2 thereupon, and pipe adapter 2 inwalls with protruding 5 places are machined into design size again.Simultaneously, convexity 5, shrouding 3, auxiliary rod in place 6 are separated, remove the residual welding slag on the shrouding 3, this moment, shrouding 3 can reuse with auxiliary rod 6 in place.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (5)
1. a water test unit that is used for the major-diameter thick-wall pipe adapter is characterized in that, this water test unit comprises pipe adapter lug boss (5) and shrouding (3);
Described pipe adapter lug boss (5) is arranged on the inwall of pipe adapter (2), with pipe adapter (2) forging molding.
2. the water test unit that is used for the major-diameter thick-wall pipe adapter as claimed in claim 1 is characterized in that, described shrouding (3) is welded on the pipe adapter lug boss (5).
3. the water test unit that is used for the major-diameter thick-wall pipe adapter as claimed in claim 1 is characterized in that, described pipe adapter lug boss (5) is the ring-type platform, and the centre of pipe adapter lug boss (5) has through hole, and through hole is coaxial with pipe adapter (2).
4. the water test unit that is used for the major-diameter thick-wall pipe adapter as claimed in claim 3; It is characterized in that; The shape of the through hole on the shape of said shrouding (3) and the pipe adapter lug boss (5) is complementary, and can the through hole edge on the pipe adapter lug boss (5) be covered under the shrouding (3) fully after shrouding (3) completion in place.
5. the water test unit that is used for the major-diameter thick-wall pipe adapter as claimed in claim 1 is characterized in that, described water test unit also comprises auxiliary rod in place (6), and this auxiliary rod in place (6) connects shrouding (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202141650U CN202182850U (en) | 2011-06-23 | 2011-06-23 | Hydraulic test device for large-diameter thick-wall pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202141650U CN202182850U (en) | 2011-06-23 | 2011-06-23 | Hydraulic test device for large-diameter thick-wall pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182850U true CN202182850U (en) | 2012-04-04 |
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ID=46175882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202141650U Expired - Lifetime CN202182850U (en) | 2011-06-23 | 2011-06-23 | Hydraulic test device for large-diameter thick-wall pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384873A (en) * | 2011-06-23 | 2012-03-21 | 上海锅炉厂有限公司 | Hydrostatic test device used for large-diameter thick-wall pipe joint and hydrostatic test method thereof |
-
2011
- 2011-06-23 CN CN2011202141650U patent/CN202182850U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384873A (en) * | 2011-06-23 | 2012-03-21 | 上海锅炉厂有限公司 | Hydrostatic test device used for large-diameter thick-wall pipe joint and hydrostatic test method thereof |
| WO2012174868A1 (en) * | 2011-06-23 | 2012-12-27 | 上海锅炉厂有限公司 | Hydraulic test apparatus for large-diameter thick-wall pipe connector and hydraulic test 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: 20120404 |
|
| CX01 | Expiry of patent term |