CN203189721U - High-strength all-forging supercritical hydrostatic test blocking valve - Google Patents
High-strength all-forging supercritical hydrostatic test blocking valve Download PDFInfo
- Publication number
- CN203189721U CN203189721U CN 201320124186 CN201320124186U CN203189721U CN 203189721 U CN203189721 U CN 203189721U CN 201320124186 CN201320124186 CN 201320124186 CN 201320124186 U CN201320124186 U CN 201320124186U CN 203189721 U CN203189721 U CN 203189721U
- Authority
- CN
- China
- Prior art keywords
- bolt
- pressing plate
- fixing bolt
- valve
- closure plate
- Prior art date
- 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
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model provides a high-strength all-forging supercritical hydrostatic test blocking valve. By means of an improvement in the structure of an original insert type blocking valve, an adjusting bolt, a fixing bolt and a pre-tightening bolt are arranged between a block board and a pressing plate. A limiting hole which is matched with the fixing bolt is formed in the block board. By means of the lever principle, the effect of saving effort is achieved. The adjusting bolt is an ordinary bolt, a special spanner does not need using in operation, and therefore operating steps are simplified.
Description
Technical field
The utility model relates to the complete stifled valve of overcritical hydraulic pressure test that forges of a kind of high strength, is specifically related to a kind of stifled valve of hydraulic boiler set that is used on overcritical, the ultra supercritical unit.
Background technique
9.4.2 bar regulation among the TSG G0001-2012 " boiler safety technical inspection rules " that national quality supervision and inspection general bureau of the People's Republic of China (PRC) promulgates: boiler should carry out 1 hydrostatic test in per 3 years, and the boiler pressure parts is through repair of a major character or after transforming. also need to carry out the hydrostatic test.This shows that the frequency of hydraulic boiler set is higher.During hydraulic boiler set, for guaranteeing the safety of steam turbine.During hydraulic boiler set xegregating unit must be arranged.The stifled valve of the hydrostatic test is exactly the xegregating unit that satisfies above-mentioned requirements.
Adopt the hydrostatic test operation of the stifled valve of the hydrostatic test to become very easy, can find over the little leak source that almost can't find, service work is accomplished with a definite target in view, shorten the repair time, improve repair quality, not only guaranteed the safe operation of unit, also can greatly reduce rate of water make-up simultaneously.For power plant has won good overall economic efficiency.The stifled valve of the hydrostatic test makes hydrostatic test process simple and effective.After stifled valve is installed, when system normally moves, be opening state, do not need any other optional feature or device, only be equivalent to a segment pipe, the pressure loss is little.The maintenance of the stifled valve of the hydrostatic test is also very convenient.Except the selfsealings circle, other part need not be changed, and is easy to maintenance, and expense is cheap.
At present, the common stifled valve arrangement of the hydrostatic test has plug-in type and two kinds of forms of slat belt.The stifled valve of slat belt rotates closure plate to closed position by the gear drive on the valve body when the hydrostatic test, relies on the hard sealing between closure plate and the valve seat to carry out the hydrostatic test, closure plate is rotated to the enable possition after the hydrostatic test again.This valve need not dismounting hydrostatic test process on principle, and advantage simple to operate is arranged, but the valve mechanism complexity, sealing is poor.
The stifled valve of the plug-in type parts such as closure plate and pressing plate of when the hydrostatic test, packing into.Closure plate and valve seat place adopt O type circle plane sealing.The bolt that turns the pressing plate center by special spanner provides initial sealing power to closure plate, and O type circle is ridden on the sealing surface of seat, and sealing force is provided by medium itself, and pressure medium more high leak tightness is more good; Take out closure plate after the hydrostatic test, the honeycomb duct of packing into makes valve become a segment pipe identical with internal diameter of the pipeline.The closure plate of can packing into again during the hydrostatic test next time.Be characterized in the simple in structure of valve, owing to adopt soft sealing structure, good seal performance, flow resistance is little in boiler running process.But the stifled valve of plug-in type must use special spanner to regulate bolt in the process that initial sealing power is provided for closure plate, has increased certain difficulty of construction.
The model utility content
At above-mentioned technical problem, the utility model provides a kind of high strength the complete stifled valve of overcritical hydraulic pressure test that forges, and by improving the structure of the stifled valve of original plug-in type, reaches the labour-saving effect, need not to use special spanner, and step simplifies the operation.
The utility model provides a kind of high strength the complete stifled valve of overcritical hydraulic pressure test that forges, comprise valve body, pipeline top in the valve body is provided with filler chamber, filler chamber is provided with selfsealings filler and piezometer ring, the filler chamber top is provided with gland, gland is connected with filler chamber by screw, be provided with four fens rings between gland and the filler chamber, the gland upper end is provided with bolt, pipe ends face in the described valve body is respectively arranged with pressing plate and closure plate, be provided with seal ring between closure plate and the sealing surface of seat, the pressing plate upper end is provided with the adjusting bolt, and the end face of regulating bolt contacts with the wall body of valve body, regulates bolt and adopts plain bolt, need not to use special spanner during adjusting, be convenient to operation.The below of regulating bolt is provided with fixing bolt, and pressing plate inside is provided with the spacing unthreaded hole that matches with fixing bolt, guarantees the mobility of pressing plate.Fixing bolt passes spacing unthreaded hole and is connected with closure plate, and pressing plate and closure plate are connected with each other by fixing bolt.Pressing plate is provided with pretension bolt, and pretension bolt is positioned at the below of fixing bolt, and the nut end face of pretension bolt contacts with closure plate.After turning the adjusting bolt, regulate bolt drive pressing plate and move to hydrostatic test direction, pressing plate drives pretension bolt and applies a power identical with hydrostatic test direction, and pressing plate puts on sealing force on the closure plate by the nut of pretension bolt.Closure plate is pressed in sealing surface of seat with seal ring, effectively realizes pre-sealed between closure plate and the valve seat.
The nut of described fixing bolt is positioned at the inside of pressing plate, and the inwall of spacing unthreaded hole is stepped, is provided with the gap between fixing bolt and the spacing unthreaded hole inwall.The shape of spacing unthreaded hole inwall matches with the structure of fixing bolt, guarantees that the moving range of pressing plate is in controllable scope.
The center line of described pretension bolt is positioned at the below of pressing plate center line, with the fixing bolt acting in conjunction, and the pretension closure plate.
Wherein, parts such as closure plate, filler chamber and pressing plate change forging or plate into by original foundry goods, make the valve body lumen can do compactlyer, have alleviated the weight of valve.After adopting forging, the crackle that is difficult in the foundry goods to avoid, burning into sand, shrinkage cavity, sand holes, defective such as loose have been reduced.
The utility model utilizes and regulates bolt and pretension bolt by improving the structure of the stifled valve of plug-in type in the prior art, and making pressing plate form one is the lever of fulcrum with the pressing plate lower end.Pressing plate inside is provided with the spacing unthreaded hole that cooperates with fixing bolt, by turning the adjusting bolt, pressing plate is offset to the direction of the hydrostatic test, drive the effective pretension closure plate of pretension bolt, utilize lever principle, make pretension bolt that bigger sealing force is acted on closure plate, the labour-saving is realized effective sealing simultaneously.Regulate bolt and adopt general plain bolt, thus need not practical special spanner, easy to operate.Component of the present utility model are by original foundry goods transformation, improved product structure, make the valve body lumen compacter, alleviated the weight of valve, greatly reduce cost, improve product competitive ability, reduced the crackle that is difficult in the foundry goods to avoid, burning into sand, shrinkage cavity, sand holes, defective such as loose, improved quality of product.
Description of drawings
Fig. 1 is structural representation of the present utility model
Wherein, the 1-valve body, 2-filler chamber, the 3-gland, the 4-pressing plate, the 5-closure plate, 6-regulates bolt, 7-fixing bolt, 8-pretension bolt, the spacing unthreaded hole of 9-, 10-seal ring.
Embodiment
Explanation and specific embodiment are further described the utility model with reference to the accompanying drawings:
The utility model provides a kind of high strength the complete stifled valve of overcritical hydraulic pressure test that forges, comprise valve body 1, pipeline top in the valve body 1 is provided with filler chamber 2, filler chamber 2 tops are provided with gland 3, gland 3 is connected with filler chamber 2 by screw, pipe ends face in the valve body 1 is respectively arranged with pressing plate 4 and closure plate 5, be provided with seal ring 10 between closure plate 5 and the sealing surface of seat, pressing plate 4 upper ends are provided with regulates bolt 6, the end face of regulating bolt 6 contacts with the wall body of valve body 1, regulate bolt 6 belows and be provided with fixing bolt 7, pressing plate 4 inside are provided with the spacing unthreaded hole 9 that matches with fixing bolt 7, and fixing bolt 7 passes spacing unthreaded hole 9 and is connected with closure plate 5, and pressing plate 4 is provided with pretension bolt 8, pretension bolt 8 is positioned at the below of fixing bolt 7, and the nut end face of pretension bolt 8 contacts with closure plate 5 end faces.The nut of fixing bolt 7 is positioned at the inside of pressing plate 4, and the inwall of spacing unthreaded hole 9 is stepped, is provided with the gap between fixing bolt 7 and spacing unthreaded hole 9 inwalls.The center line of pretension bolt 8 is positioned at the below of pressing plate 4 center lines.
As shown in the figure, arrow a indication is hydrostatic test direction.During the boiler normal operating condition, the water conservancy diversion cover is installed in the pipeline of valve body 1, makes valve form an end pipeline identical with valve body 1 internal diameter.In the time of need carrying out the hydrostatic test, will regulate pack into the specified position of pressing plate 4 of bolt 6 and pretension bolt 8 earlier, guarantee to regulate the do not back-out end face of pressing plate 4 of bolt 6, reinstall fixing bolt 7, and guarantee that pressing plate 4 and closure plate 5 are parallel and be fixed into one.After guaranteeing that seal ring 10 is intact, gland 3 and filler chamber 2 are opened, take out the water conservancy diversion cover, at the pipe ends face pressing plate 4 and closure plate 5 are installed respectively, guarantee that closure plate 5 closely contacts with seal ring 10.Regulating bolt 6 is plain bolt, uses common wrench to tighten and regulates bolt 6, and pressing plate 4 is moved to hydrostatic test direction.Because pressing plate 4 inside are provided with the spacing unthreaded hole 9 that matches with fixing bolt 7, so pressing plate 4 with fixing bolt 7 relative displacement takes place, drive pretension bolt 8 pretension closure plates 5.The lower end of pressing plate 4 is as the fulcrum of lever, turn when regulating bolt 6, regulate 6 pairs of pressing plates 4 of bolt and applied a power identical with hydrostatic test direction, because the effect of lever principle, closure plate 5 has applied a power opposite with hydrostatic test direction and this active force greater than the power that acts on adjusting bolt 6 by 8 pairs of pressing plates 4 of pretension bolt.8 pairs of closure plates 5 of pretension bolt apply a big or small equidirectional opposite reaction to realize the purpose of pretension closure plate 5 simultaneously.The sealing force of 8 pairs of closure plates 5 of pretension bolt is greater than acting on the power of regulating bolt 6.Reinstall component such as filler chamber 2 and gland 3 and begun the hydrostatic test again.The high pressure water that the hydrostatic test is used by self strength test compresses closure plate 5, reaches sealing.
The utility model when the selection of material with parts such as closure plate 5, filler chamber 2, pressing plates 4 by original foundry goods, change forging or plate into.Make that valve body 1 lumen can be compacter, alleviate the weight of valve more than 20%, greatly reduce cost, improved product competitive ability.And behind the employing forging, reduced the crackle, burning into sand, shrinkage cavity, the sand holes that are difficult in the foundry goods avoid and reached casting defects such as loose, improved quality of product.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.The content that is not described in detail in this specification belongs to related domain professional and technical personnel's known prior art.
Claims (3)
1. valve is blocked up in the overcritical hydraulic pressure test of the full forging of high strength, comprise valve body (1), pipeline top in the valve body (1) is provided with filler chamber (2), filler chamber (2) top is provided with gland (3), gland (3) is connected with filler chamber (2) by screw, pipe ends face in the valve body (1) is respectively arranged with pressing plate (4) and closure plate (5), be provided with seal ring (10) between closure plate (5) and the sealing surface of seat, it is characterized in that pressing plate (4) upper end is provided with adjusting bolt (6), the end face of regulating bolt (6) contacts with the wall body of valve body (1), regulate bolt (6) below and be provided with fixing bolt (7), pressing plate (4) inside is provided with the spacing unthreaded hole (9) that matches with fixing bolt (7), fixing bolt (7) passes spacing unthreaded hole (9) and is connected with closure plate (5), pressing plate (4) is provided with pretension bolt (8), pretension bolt (8) is positioned at the below of fixing bolt (7), and the nut end face of pretension bolt (8) contacts with closure plate (5) end face.
2. valve is blocked up in the overcritical hydraulic pressure test of the full forging of high strength according to claim 1, it is characterized in that the nut of fixing bolt (7) is positioned at the inside of pressing plate (4), the inwall of spacing unthreaded hole (9) is stepped, is provided with the gap between fixing bolt (7) and spacing unthreaded hole (9) inwall.
3. the complete stifled valve of overcritical hydraulic pressure test that forges of high strength according to claim 2 is characterized in that the center line of pretension bolt (8) is positioned at the below of pressing plate (4) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124186 CN203189721U (en) | 2013-03-19 | 2013-03-19 | High-strength all-forging supercritical hydrostatic test blocking valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124186 CN203189721U (en) | 2013-03-19 | 2013-03-19 | High-strength all-forging supercritical hydrostatic test blocking valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189721U true CN203189721U (en) | 2013-09-11 |
Family
ID=49106582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320124186 Expired - Lifetime CN203189721U (en) | 2013-03-19 | 2013-03-19 | High-strength all-forging supercritical hydrostatic test blocking valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404550A (en) * | 2016-11-12 | 2017-02-15 | 山西江淮重工有限责任公司 | Valve body strength test fixture and test method with inner cavity segment pressure bearing |
| CN112945745A (en) * | 2021-02-01 | 2021-06-11 | 南通市力沛流体阀业有限公司 | Hydraulic test block valve and pressure test method thereof |
-
2013
- 2013-03-19 CN CN 201320124186 patent/CN203189721U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404550A (en) * | 2016-11-12 | 2017-02-15 | 山西江淮重工有限责任公司 | Valve body strength test fixture and test method with inner cavity segment pressure bearing |
| CN106404550B (en) * | 2016-11-12 | 2023-05-26 | 山西江淮重工有限责任公司 | Valve body strength test tool and test method for sectional bearing of inner cavity |
| CN112945745A (en) * | 2021-02-01 | 2021-06-11 | 南通市力沛流体阀业有限公司 | Hydraulic test block valve and pressure test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202280873U (en) | Safety changeover valve | |
| CN204942717U (en) | Diaphragm stop valve | |
| CN203176504U (en) | Spring-reset three-position type pneumatic actuator | |
| CN203189721U (en) | High-strength all-forging supercritical hydrostatic test blocking valve | |
| CN203906910U (en) | Axial-flow type ball check valve | |
| CN207034349U (en) | A kind of gas pipeline special pneumatic gate valve | |
| WO2012139374A1 (en) | Magnetic dipole valve | |
| CN103398201B (en) | Y shape valve body screw thread connects high temperature and high pressure cut-off valve | |
| CN203131068U (en) | High-sealing wedge gate valve | |
| CN204420155U (en) | New type high temperature Wedge gate valve | |
| CN203604678U (en) | Conical parallel diverting and expanding flat gate valve | |
| CN105065701A (en) | Hard sealing lifting type brake plug valve and control method thereof | |
| CN206017775U (en) | A kind of butterfly valve of good sealing effect | |
| CN204175997U (en) | A kind of Double-clack stop valve | |
| CN203585408U (en) | Straight-through ball valve with three high-platform threads | |
| CN204187056U (en) | Turbine high-pressure admission safety check | |
| CN210770278U (en) | Double-seat butterfly valve | |
| CN202327190U (en) | Ball valve | |
| CN203131074U (en) | Wedge gate valve | |
| CN203286015U (en) | Oblique type valve | |
| CN206723507U (en) | A kind of special fixing ball valve of the coal chemical industry of on-bne repair | |
| CN206017794U (en) | A kind of novel cutoff valve | |
| CN203214915U (en) | Steel casting of gas turbine | |
| CN204226663U (en) | A kind of elasticity stop valve | |
| CN202852035U (en) | Gate valve |
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: 20130911 |