CN102749173B - Stifled valve water test unit - Google Patents
Stifled valve water test unit Download PDFInfo
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- CN102749173B CN102749173B CN201110095416.2A CN201110095416A CN102749173B CN 102749173 B CN102749173 B CN 102749173B CN 201110095416 A CN201110095416 A CN 201110095416A CN 102749173 B CN102749173 B CN 102749173B
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- China
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- valve body
- metal tube
- end cap
- valve
- pressing plate
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Abstract
Stifled valve water test unit.Traditional stifled valve water pressure generation is the hermetically-sealed construction adopting end hydraulic cover to compress " O " RunddichtringO formula, and therefore valve body can not finally machine before the hydraulic testing.Need the surplus staying 80 ~ 100 millimeters in arm both sides, and bore 20 threaded holes.After the valve body hydraulic testing is qualified, the surplus that arm both sides are reserved machines away, and car carries out the final assembling of valve again after becoming bevel for welding.A kind of stifled valve water test unit, its composition comprises: end cap (5), through the metal tube (3) being verified valve body (1), described metal tube two ends are connected with the described end cap being positioned at both sides respectively by one group of threaded connector (2), pressing plate (4) is equipped with in described end cap and described being verified between valve body, and the part that described metal tube is positioned at described valve body is drilled with water injection hole (6).The present invention is used for subcritical, overcritical, ultra-supercritical thermal power unit plug valve.
Description
technical field:
the present invention relates to a kind of novel water test unit, be specifically related to a kind of stifled valve water test unit.
background technology:
traditional stifled valve water pressure generation is the hermetically-sealed construction adopting end hydraulic cover to compress " O " RunddichtringO formula, and therefore valve body can not finally machine before the hydraulic testing.Need the surplus staying 80 ~ 100 millimeters in arm both sides, bore 20 threaded holes.After the valve body hydraulic testing is qualified, the surplus that arm both sides are reserved machines away, and car carries out the final assembling of valve again after becoming bevel for welding.
during traditional stifled valve body water pressure test for strength, in order to the technique of the hydraulic testing needs, two side branch need to stay very large surplus, meanwhile, because stifled valve inside nominal diameter is general larger, during the hydraulic testing, the contact area of test(ing) medium and hydraulic cover is larger, acting force increases thereupon, very high to the requirement of strength of hydraulic cover and coupling bolt, the thickness of capping and the diameter of coupling bolt all larger, this just causes raw-material significant wastage, considerably increases production cost; Also considerably increase the danger of the hydraulic testing simultaneously.After the hydraulic testing is qualified, adding in process to the machine of both sides branch pipe welding groove, requiring higher to the operative skill (centering) of workman, once there is deviation, the machining precision of whole valve body certainly will be affected.
summary of the invention:
the object of this invention is to provide a kind of stifled valve water test unit, namely avoid the unnecessary error of processing centering and bringing for 2 times, reduce processing capacity, reduce the danger of the hydraulic testing, also mitigate the supplied materials weight of valve body forge piece simultaneously.
above-mentioned object is realized by following technical scheme:
stifled valve water test unit, its composition comprises: end cap, through the metal tube being verified valve body, described metal tube two ends are connected with the end cap be positioned at described in two ends respectively by one group of threaded connector, pressing plate is equipped with in described end cap and described being verified between valve body, and the part that described metal tube is positioned at described valve body has water injection hole.
described stifled valve water test unit, described being verified between valve body and described pressing plate is connected by O-ring seal, be connected by O-ring seal between described pressing plate and described end cap, described pressing plate or be connected by O-ring seal between described end cap and described metal tube.
beneficial effect:
the present invention is owing to adopting perforating tube structure, the contact area of test(ing) medium and hydraulic cover and the annulus area formed between valve body and pipe reduce greatly, test(ing) medium power also reduces thereupon, coupling bolt just can do smaller by this, hydraulic cover also can do thinner, saves the manufactured materials of capping.
the present invention has just been worked into final size due to valve body before the hydraulic testing, namely avoid 2 processing and the unnecessary error brought of centering, improve machining precision, product quality is improved further, can machining period be saved simultaneously, greatly save production cost.
the present invention, due to the reduction of test(ing) medium packing volume, substantially reduces the time that test(ing) medium injects, improves work efficiency.
hydraulic pressure test fixture, because valve body arm two ends need boring to attack hole, in order to install capping in the past; Therefore, valve body arm two ends need to reserve the long surplus of 80-100mm, cause the waste of material.The present invention does not need, in valve body arm two ends processing screw hole, therefore not need to reserve surplus, save material; , save and forge mould manufacturing cost, greatly reduce product cost.
the present invention penetrates in valve body due to pipe, and the space of filling liquid in valve body and volume are diminished, and the requirement of water reduces, faster production, water saving.
hydraulic testing mode, because the active area of water is large, axial force is large, and in the process of test, bolt has axial deformation under the effect of larger axial force, and water under high pressure very easily ejects, and there is certain danger in the past.Seal request is high.The present invention is owing to penetrating pipe, and make the active area of water reduce the annulus area namely formed between valve body and pipe widely, axial force reduces greatly, effectively can avoid the ejection of water under high pressure, and the danger of the hydraulic testing is reduced widely; Be conducive to ensureing safety in production.
specify according to corresponding standard, in valve manifold 200mm, will radiographic inspection be carried out, in order to the safety of the hydraulic testing, the threaded bore portions of capping is installed, also needs to carry out radiographic inspection; And the limited length of once detecting a flaw, carry out the hydraulic testing by former mode like this and just must carry out secondary flaw detection.The present invention does not need to reserve the surplus of installing capping, is just worked into final size before the hydraulic testing; Therefore length of detecting a flaw can shorten 1/2, only needs once to detect a flaw just enough, improves production efficiency, saved cost.
accompanying drawing illustrates:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is right views of accompanying drawing 1 metal tube.
embodiment:
embodiment 1:
a kind of stifled valve water test unit, its composition comprises: end cap 5, through the metal tube 3 being verified valve body 1, described metal tube two ends are connected with the end cap be positioned at described in both sides respectively by one group of threaded connector 2, pressing plate 4 is equipped with in described end cap and described being verified between valve body, and the part that described metal tube is positioned at described valve body is drilled with water injection hole 6.
embodiment 2:
stifled valve water test unit described in embodiment 1, O-ring seal is equipped with in described being verified between valve body and described pressing plate, between described pressing plate and described end cap, O-ring seal is housed, described pressing plate or between described end cap and described metal tube, O-ring seal is housed.
embodiment 3:
stifled valve water test unit described in embodiment 1, uses bolted between described metal tube and described pressing plate.During use, a metal tube is penetrated in detected valve body, the end of metal tube is bored 20 threaded holes and is threaded by this and pressing plate and end cap to be fixed, test(ing) medium enters valve inner by water injection hole, realizes by O RunddichtringO 1 and O RunddichtringO 28 sealing forming space between valve body and metal tube.
Claims (1)
1.
a kind of stifled valve water test unit, its composition comprises: end cap, it is characterized in that: through the metal tube being verified valve body, described metal tube two ends are connected with the end cap be positioned at described in two ends respectively by one group of threaded connector, pressing plate is equipped with in described end cap and described being verified between valve body, and the part that described metal tube is positioned at described valve body has water injection hole;
described being verified between valve body and described pressing plate is connected by O-ring seal, is connected between described pressing plate and described end cap by O-ring seal, described pressing plate/be connected by O-ring seal between described end cap and described metal tube;
by bolted between described metal tube and described pressing plate, during use, a metal tube is penetrated in detected valve body, the end of metal tube is bored 20 threaded holes and is threaded by this and pressing plate and end cap to be fixed, test(ing) medium enters valve inner by water injection hole, realizes by O RunddichtringO one and O RunddichtringO two sealing forming space between valve body and metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110095416.2A CN102749173B (en) | 2011-04-17 | 2011-04-17 | Stifled valve water test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110095416.2A CN102749173B (en) | 2011-04-17 | 2011-04-17 | Stifled valve water test unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102749173A CN102749173A (en) | 2012-10-24 |
| CN102749173B true CN102749173B (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110095416.2A Active CN102749173B (en) | 2011-04-17 | 2011-04-17 | Stifled valve water test unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102749173B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702859B (en) * | 2017-11-25 | 2023-12-26 | 山西江淮重工有限责任公司 | Shutoff frock is used in valve body intensity test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799500A (en) * | 1972-07-06 | 1974-03-26 | Mueller Co | Rotary valve with anti-corrosion and torque controlling means |
| CN2175420Y (en) * | 1993-10-09 | 1994-08-24 | 开封高压阀门厂 | Device for measuring valve pressure |
| CN1523255A (en) * | 2003-09-11 | 2004-08-25 | 温州市飞球电站阀门制造有限公司 | Electric power driven hydrostatic test block valve for thermal power generation |
| CN101294860A (en) * | 2008-06-16 | 2008-10-29 | 濮阳市中拓管道清洗修复工程有限公司 | Quality detecting method for inner lining old pipe |
-
2011
- 2011-04-17 CN CN201110095416.2A patent/CN102749173B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799500A (en) * | 1972-07-06 | 1974-03-26 | Mueller Co | Rotary valve with anti-corrosion and torque controlling means |
| CN2175420Y (en) * | 1993-10-09 | 1994-08-24 | 开封高压阀门厂 | Device for measuring valve pressure |
| CN1523255A (en) * | 2003-09-11 | 2004-08-25 | 温州市飞球电站阀门制造有限公司 | Electric power driven hydrostatic test block valve for thermal power generation |
| CN101294860A (en) * | 2008-06-16 | 2008-10-29 | 濮阳市中拓管道清洗修复工程有限公司 | Quality detecting method for inner lining old pipe |
Non-Patent Citations (4)
| Title |
|---|
| ZG20CrMoV阀体水压试验断裂原因分析;朱青山等;《锅炉制造》;20080731(第4期);第50-52页 * |
| 水压试验堵阀;卢合奎等;《通用机械》;20081231(第12期);第82-85页 * |
| 水压试验阀应用分析及结构改进;张娜等;《阀门》;20081031(第5期);第18-20页 * |
| 水压试验阀的技术开发与应用;焦伦龄等;《阀门》;20080831(第4期);第1-4页 * |
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| Publication number | Publication date |
|---|---|
| CN102749173A (en) | 2012-10-24 |
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