CN2331062Y - Fast sealed repairing straight stroke masked valve - Google Patents
Fast sealed repairing straight stroke masked valve Download PDFInfo
- Publication number
- CN2331062Y CN2331062Y CN 98206610 CN98206610U CN2331062Y CN 2331062 Y CN2331062 Y CN 2331062Y CN 98206610 CN98206610 CN 98206610 CN 98206610 U CN98206610 U CN 98206610U CN 2331062 Y CN2331062 Y CN 2331062Y
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- Prior art keywords
- valve
- drive link
- gland
- maintenance
- sleeve
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- Expired - Lifetime
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Abstract
The utility model discloses a fast sealed repairing straight stroke masked valve, comprising a valve body and a valve core component. A valve rod is connected with a drive device through a transmission rod; simultaneously, the utility model also comprises a valve sleeve pipe which is hermetically connected with the valve body, a front clamping bush, a rear clamping bush, a sealed cover, a gland, etc.; the front clamping bush, the rear clamping bush, the sealed cover, the gland, etc. are arranged in the valve body; the transmission rod and the valve rod are connected through a steel ball. The gland can be dismounted by using a sealed maintenance container, and the valve core component, etc. are taken out through the transmission rod to carry out the replacement and the maintenance. The utility model has the advantages of high shielding effect, reliable sealing performance and safe and quick maintenance, and the utility model can be used for conveying feed solution in a nuclear radiation factory.
Description
The utility model belongs to a kind of valve, is specifically related to a kind of Direct Travel shielding valve that putting factory carries severe corrosive and hot medium that is used to examine.
The often segmentation arrangements that adopt of putting of nuclear plant designing pipeline promptly are placed on equipment in one or several canyon by the function grouping more, more several or tens canyons are linked to be a production line.Enough thick (500～1400mm) cement wall shielding is arranged around each canyon.In the canyon of such sealing, couple together by pipeline and valve between each equipment.The medium of valve of flowing through has strong corrosivity and radioactivity.Usually the standard form valve that adopts, it comprises a valve body and is located at valve hole part in the valve body, is connected by universal joint between valve rod and the drive link, makes valve opening and closing by the drive unit driving that is located at outside the barrier shield.Its shortcoming is a valve hole part dismounting difficulty.In case valve damages, change or overhaul all very difficulty.Certainly will at first to stop a certain section in the production line, make equipment be in dead ship condition, then by manually canyon and equipment thereof and valve being cleaned decontamination, to reduce radioactive level, that have even will repeatedly handle and just can remove removing damaged valve, again it is overhauled or changes.This is not only time-consuming, operating personnel's health is come to harm, and expense is very expensive.In putting of a nuclear factory, use thousands of deck valve doors usually, so big maintenance workload and producing cost wants to keep its ordinary production and is difficult to realize.
It is good that the purpose of this utility model provides a kind of shield effectiveness, and sealing is reliable, the fast sealing maintenance Direct Travel shielding valve of replacing, service valve core components safe ready.
For achieving the above object, the utility model is achieved in that a kind of fast sealing maintenance Direct Travel shielding valve, it comprises a valve body, be located in the valve body by valve gap, flap, the valve hole part that valve rod and corrugated tube are assembled into, valve rod is connected with drive link, drive link is connected with the drive unit that is located at the barrier shield outside, simultaneously, it also comprises a valve sleeve that is used to be embedded in the barrier shield, valve body is connected by flange seal with the valve sleeve lower end, in valve sleeve, be provided with preceding clamping sleeve from the bottom to top successively, back clamping sleeve and pedestal, in pedestal, be provided with gland bonnet and end cover, and their sealings are installed in the valve sleeve by gland and gland, said drive link is positioned at above-mentioned preceding clamping sleeve, back clamping sleeve, pedestal, in the medium pore of gland bonnet, it is to be formed by preceding drive link and back drive link pin joint, the upper end of back drive link is connected with drive unit on being located at gland, the lower end of preceding drive link is connected by steel ball bindiny mechanism with valve rod, the top of preceding drive link is provided with maintenance and uses pin, the upper end of preceding clamping sleeve to be provided with the maintenance circular trough.
Advantage of the present utility model is: not only shield effectiveness is good, sealing is reliable, and after the gland of dismantling, all valve members comprise valve hole part and all interior parts of valve sleeve in the valve body, all can extract out by drive link, change and overhaul, when maintenance, utilize steel ball bindiny mechanism that valve hole part is come off with preceding drive link rapidly, like this, can realize the maintenance of sealing safely and fast of valve by means of the sealing maintenance container.
Now in conjunction with the accompanying drawings and embodiments the utility model is done specific descriptions:
Fig. 1 is fast sealing maintenance Direct Travel shielding valve arrangement synoptic diagram;
Fig. 2 is an I partial enlarged drawing among Fig. 1;
Fig. 3 is an II partial enlarged drawing among Fig. 2;
Fig. 4 overhauls structural scheme of mechanism fast for steel ball comes off.
As depicted in figs. 1 and 2, a kind of fast sealing maintenance Direct Travel shielding valve, it comprises a valve body 16, be located at the valve hole part 14 that is assembled into by valve gap 20, flap 17, valve rod 21 and corrugated tube 18 in the valve body 16, valve rod 21 is connected with drive link 12, and drive link 12 is connected with the drive unit 1 that is located at barrier shield 23 outsides.Simultaneously, it also comprises a valve sleeve 10 that is used to be embedded in the barrier shield 23.Valve body 16 is tightly connected by flange 19 with valve sleeve 10.Clamping sleeve 11, back clamping sleeve 7 and pedestal 24 are provided with gland bonnet 5 and end cover 3 before being provided with successively from the bottom to top in valve sleeve 10 in pedestal 24, and by gland 2 and gland 31 their sealings are installed in the valve sleeve 10.Said drive link 12 is positioned at the medium pore of above-mentioned preceding clamping sleeve 12, back clamping sleeve 7, gland bonnet 5 and pedestal 24, and it is to be connected to form with connecting pin 8 by preceding drive link and back drive link.The upper end of back drive link is connected with drive unit 1 on being located at gland 2.The lower end of preceding drive link is connected by steel ball bindiny mechanism 26 with valve rod 21, promptly has four circular holes on the sidewall of the lower end of preceding drive link, and steel ball 26 is housed in the hole, has ring groove in the upper end of valve rod 21, and drive link was blocked by steel ball 26 before valve rod 21 inserted.The top of preceding drive link is provided with maintenance pin 9, and the upper end of preceding clamping sleeve 11 is provided with the maintenance annular groove.Be provided with O-ring seal 25 between gland 31 and the end cover 3.
In the present embodiment, valve body 16 is core components of this valve, and requiring mission life is 20 years.Except that satisfying seal request, because of it is worked in the environment of deep-etching, strong irradiation for a long time, thereby all very high to the requirement of the requirement of material and processing technology.According to different media, valve body 16 materials have four kinds: OCr18Ni9, OOCr18Ni10, OCr17Ni12Mo2 or OOCr17Ni12Mo2.Valve body 16 has two sealing surfaces up and down, and last sealing surface is to constitute sealing pair jointly by valve gap 20 and valve body 16 upper surfaces, and its effect is to prevent that actuating medium from upwards leaking.Lower sealing surface is a valve face, and it is the sealing pair that is made of jointly flap 17 sealing surfaces and valve body 16 sealing surfaces, can adopt hard sealing surface or soft sealing face usually.So-called hard sealing surface is that edge of a knife type seals firmly, and promptly the sealing surface of flap 17 and valve body 16 reaches more than 10 grades its smooth finish through attrition process.This hard sealing has higher physical strength, can be used for the higher occasion of working temperature.So-called soft seal is meant that flap 17 is nonmetallic materials, and this sealing can be used for the lower occasion of actuating medium temperature.The valve hole part 14 that is contained in the valve body 16 is another critical components of valve.Valve rod 21 and flap 17 link together by split pin, and the two ends of corrugated stainless steel tubing 18 roll welding respectively when valve rod 21 moves up and down, utilize the elastic displacement of corrugated tube 18 itself on valve gap 20 and valve rod 21, realize moving up and down of flap 17, make valve opening and closing.Corrugated tube 18 is a precision element, and wall thickness is generally 0.10～0.20mm.Its life-span directly determines the functional reliability and the serviceable life of valve.So in processing and assembling process, all will prevent to collide with or damage its surface.In case corrugated tube 18 breaks, the radioactivity feed liquid that has pressure enters corrugated tube 18 inner chambers by crackle, and by emitting on the valve rod 21, even clamping sleeve 11 can cause especially big radioactive contamination accident until handling hall before can continuing to flow to.In order to prevent the generation of this accident, in design, adopt the structural measure of leakage reversed flow.As shown in Figure 3, have radially spout hole 27 on valve gap 20, it communicates with the flange 19 interior discharge orifices of being opened 28.Even the radioactivity feed liquid of leaking flows to valve rod 21, liquid stream will flow back to canyon along spout hole 27 discharge orifice 28 of flowing through, and can not cause outside radioactive contamination accident.
During installation, at first valve sleeve 10 is embedded in the barrier shield 23, and welds, 19 sealings of valve body 16 usefulness flanges are installed in the lower end of valve sleeve 10 with stainless steel coverlay 22.Before connecting with connecting pin 8 then, back drive link is packed drive link 12 in the preceding clamping sleeve 11, the lower end of clamping sleeve 11 before stretch out the drive link lower end before making, and the steel ball 26 of in four circular holes of preceding drive link lower end, packing into, insert valve hole part 14, make the annular rounded groove and steel ball 26 engagements of valve rod 21, slowly mention preceding drive link, steel ball 26 is slipped in the preceding clamping sleeve 11, squeeze into maintenance with pin 9 on preceding drive link, reinstall back clamping sleeve 7, the drive link 12 of slinging is packed it in the valve sleeve 10 into, make valve hole part 14 valve body 16 of packing into, pack into successively pedestal 24 and gland bonnet 5, end cover 3 is fastened on gland 2 and gland 31 on the valve sleeve 10 with coupling bolt 4.Drive unit 1 is installed at last.
In the utility model, the valve components of same specifications and models has interchangeability, can reuse after maintenance to guarantee all parts, or can once assemble success when enabling new parts.The replacing of valve components or maintenance are finished by means of sealing maintenance container (not belonging to technology contents of the present utility model).This container has the end cap seal that enough gamma-ray irradiation shielding thicknesses and anti-α leak, and has the apparatus of fast assembling-disassembling Direct Travel shielding valve, thus it with shield the supporting use of valve, can under the shielding condition, finish the quick replacing and the maintenance of valve.Replacing and service valve door operation step are as follows:
(1) removes electrical fitting, drive unit 1, gland 2 and gland 31 successively;
(2) will seal maintenance container 6 and lift and be located on the Awaiting Overhaul valve location, and be matched with the upper flange of valve sleeve 10 in the bottom of sealing maintenance container 6, and guarantee that sealing maintenance container 6 is concentric with the shielding valve;
(3) utilize the pawl that hangs set in the sealing maintenance container 6 to take out end cover 3, gland bonnet 5, and utilize the isolated plant of establishing in addition to tighten the upper end of drive link 12, with valve member, comprise that valve hole part 14, preceding clamping sleeve 11, back clamping sleeve 7 and drive link 12 etc. from valve body 16 and valve sleeve 10 interior extractions out, hang in the sealing maintenance container 6;
(4) will prepare in advance in the clean valve member of sealing in the maintenance container 6 packed valve sleeve 10 and valve body 16 into;
(5) pack into successively gland bonnet 5 and end cover 3 are set up gland 31, gland 2 and drive unit 1 again, connect electrical fitting, promptly finish the replacing of shielding valve.
The maintenance of the valve member that has hung out is carried out in the hot cell, is about to seal maintenance container 6 and valve member is hung in the hot cell 30 by special being connected with hot cell 30, cleans and unloads valve hole part 14 and overhaul.As shown in Figure 4, when dismounting valve hole part 14, the ring groove of clamping sleeve 11 is got maintenance and is used register pin 9 before blocking with preceding clamping sleeve clamp device 29 earlier, drive link slowly puts down before hanging, when the lower end of current drive link skidded off the lower end of preceding clamping sleeve 11, steel ball 26 came off automatically, and valve hole part 14 breaks away from drive link 12, fall into service sink, valve hole part 14 after the cleaning through the maintenance, recoverable repeated use, that can not repair then abandons it.
The utility model is long service life not only, and sealing is reliable, and shield effectiveness is good, has good corrosion resistant Erosion, heatproof, wear-resisting and radiation-resistant property, and replacing and maintenance safety are quick. The utility model claims again Wear the ground valve, can be used for examining the feed liquid conveying of putting factory.
Claims (2)
1. a fast sealing maintenance Direct Travel shields valve, it comprises a valve body (16), be located in the valve body (16) by valve gap (20), flap (17), the valve hole part (14) that valve rod (21) and corrugated tube (18) are assembled into, valve rod (21) is connected with drive link (12), drive link (12) is connected with the drive unit (1) that is located at the barrier shield outside, it is characterized in that: it also comprises a valve sleeve (10) that is used to be embedded in the barrier shield, valve body (16) is tightly connected by flange (19) with valve sleeve (10) lower end, in valve sleeve (10), be provided with preceding clamping sleeve (11) from the bottom to top successively, back clamping sleeve (7) and pedestal (24), in pedestal (24), be provided with gland bonnet (5) and end cover (3), and their sealings are installed in the valve sleeve (10) by gland (2) and gland (31), said drive link (12) is positioned at above-mentioned preceding clamping sleeve (11), back clamping sleeve (7), in the medium pore of pedestal (24) and gland bonnet (5), it is to be formed by preceding drive link and back drive link pin joint, the upper end of back drive link is connected with drive unit (1) on being located at gland (2), the lower end of preceding drive link is connected by steel ball bindiny mechanism (26) with valve rod (21), the top of preceding drive link is provided with maintenance pin (9), and the upper end of preceding clamping sleeve (11) is provided with the maintenance circular trough.
2. according to the said a kind of fast sealing maintenance Direct Travel shielding valve of claim 1, it is characterized in that: have radially spout hole (27) in valve gap (20), it communicates with the interior discharge orifice of being opened (28) of flange (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98206610 CN2331062Y (en) | 1998-07-01 | 1998-07-01 | Fast sealed repairing straight stroke masked valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98206610 CN2331062Y (en) | 1998-07-01 | 1998-07-01 | Fast sealed repairing straight stroke masked valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2331062Y true CN2331062Y (en) | 1999-07-28 |
Family
ID=33962740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98206610 Expired - Lifetime CN2331062Y (en) | 1998-07-01 | 1998-07-01 | Fast sealed repairing straight stroke masked valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2331062Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848165A (en) * | 2012-09-11 | 2013-01-02 | 中国核电工程有限公司 | Maintenance container for valve |
| CN107218434A (en) * | 2017-07-28 | 2017-09-29 | 江苏华洋新思路能源装备股份有限公司 | AP1000 heap-type nuclear power generating sets injection needle valve extension rod |
| CN107355587A (en) * | 2017-08-21 | 2017-11-17 | 江苏华洋新思路能源装备股份有限公司 | A kind of nuclear power generating sets injection needle-like valve-regulated devices |
| CN110723635A (en) * | 2019-11-09 | 2020-01-24 | 西安广核阀门科技有限公司 | Through-the-earth valve overhauling tool and overhauling method |
-
1998
- 1998-07-01 CN CN 98206610 patent/CN2331062Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848165A (en) * | 2012-09-11 | 2013-01-02 | 中国核电工程有限公司 | Maintenance container for valve |
| CN102848165B (en) * | 2012-09-11 | 2015-07-08 | 中国核电工程有限公司 | Maintenance container for valve |
| CN107218434A (en) * | 2017-07-28 | 2017-09-29 | 江苏华洋新思路能源装备股份有限公司 | AP1000 heap-type nuclear power generating sets injection needle valve extension rod |
| CN107355587A (en) * | 2017-08-21 | 2017-11-17 | 江苏华洋新思路能源装备股份有限公司 | A kind of nuclear power generating sets injection needle-like valve-regulated devices |
| CN110723635A (en) * | 2019-11-09 | 2020-01-24 | 西安广核阀门科技有限公司 | Through-the-earth valve overhauling tool and overhauling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |