CN201137751Y - Corrugated pipe sodium stop valve - Google Patents
Corrugated pipe sodium stop valve Download PDFInfo
- Publication number
- CN201137751Y CN201137751Y CNU200820028101XU CN200820028101U CN201137751Y CN 201137751 Y CN201137751 Y CN 201137751Y CN U200820028101X U CNU200820028101X U CN U200820028101XU CN 200820028101 U CN200820028101 U CN 200820028101U CN 201137751 Y CN201137751 Y CN 201137751Y
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- valve
- valve rod
- bellows
- handwheel
- rod
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Abstract
The utility model discloses a corrugated tube sodium stop valve, which comprises a valve body, a valve clack which is arranged in the valve body and is matched with a valve seat to be used, a valve bonnet which is mutually buckled and fixed with the valve body and, a valve rod which is traversed through the valve bonnet and is fixedly connected with the valve clack, a handwheel which is installed on the other end of the valve rod and a corrugated tube which is sleeved in a valve cavity of the valve rod, wherein the valve rod is composed of an upper valve rod and a lower valve rod which are connected into a whole through a connecting offset mechanism, heat dissipation mechanisms are arranged outside the corrugated tube and between the valve body and the valve cover, filler which is used to seal is arranged on the upper end part of the valve cavity outside the lower valve rod, an actuating mechanism which drives the handwheel acting force is arranged outside the upper valve rod, and an alarming mechanism which is communicated with the valve cavity outside the corrugated tube is also arranged on the valve body. The stop valve has the double seal function, the operation is simple, the sealing performance is good, the problem that the sealing performance is affected due to the inconformity of the thermal expansion contractility after the valve rod and the valve body are heated can be solved, and the check stop valve is safer and more reliable.
Description
Technical field
The utility model relates to the nuclear industry technical field, particularly relates to a kind of bellows sodium stop valve that is applicable in the nuclear industry radioactivity system.
Background technique
The open and close of existing stop valve and aperture thereof are to realize by the valve rod lifting that drives flap that moves up and down, because the frequent activity of valve rod causes the wearing and tearing of filler, easily cause leaking outside of valve.Simultaneously when valve during in opening state medium can be along valve rod by packing leaking to the valve body outside, cause valve body to produce the phenomenon of run, drip, leak, particularly along with the increase of pressure medium, the phenomenon of this run, drip, leak is also just more serious.People put bellows in stem lower portion for this reason, the one end is welded on the flap, the other end is fixed on valve gap or the valve body, because stem lower portion is moved in flexible bellows by big envelope, the medium that enters body cavity when making work does not have any space and can let out, the shortcoming of having avoided existing stop valve to leak from the filler fray, but this kind stop valve can't guarantee the sealing after bellows damages.Particularly sealability is required higher technical field relatively in nuclear industry etc., for example the sodium of nuclear industry factory fusion leaks if trace takes place, because the characteristics such as emissivity that molten sodium itself is had, will cause serious environmental to pollute, the sealability of this type of stop valve can't satisfy especially produces and uses needs.In addition, because molten sodium itself can distribute a large amount of heats, and the back heat expansion contractibility of being heated of valve body and valve rod is inconsistent, if the valve rod contractibility is relatively large, then its pressure stress to the bottom valve seat is come, fragile valve seat; Otherwise if the less relatively sealability that can have a strong impact on valve again of valve rod contractibility.
The model utility content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of bellows sodium stop valve is provided, it has the double seal function, simple to operate, good seal performance, and can effectively solve valve rod and the valve body impaired problem of the back inconsistent caused sealability of heat expansion contractibility of being heated.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of bellows sodium stop valve, comprise valve body 1, place the valve body 1 inner flap 24 that is used with valve seat 17, the valve gap 9 that is fixed together with valve body 1 make-up, the valve rod that runs through valve gap 9 and fixedly connected with flap 24, the bellows 4 that is installed in the handwheel 25 of the valve rod the other end and is sleeved on valve rod valve pocket section, described valve rod is by being connected and fixed to the upper valve rod 22 of one and forming with lower valve rod 2 by connecting compensation mechanism, lower valve rod 2 runs through valve gap 9 and fixedlys connected with flap 24, and upper valve rod 22 the other ends are installed handwheel 25; Upper valve rod 22 is provided with the thin termination that is connected with the connecting end of lower valve rod 2, and described connection compensation mechanism is made up of fixedly connected two thin connection cutting ferrule 20 and sheaths 21 thereof that connect the termination, the sheath 21 suit upper valve rods 22 and lower valve rod 2 outsides; Sealing is provided with cooling mechanism between valve body 1 and the valve gap 9, and bellows 4 is sleeved in valve body 1 and the formed lower valve rod 2 valve pocket sections of cooling mechanism; Be provided with the filler 11 of sealing usefulness between valve gap 9 upper ends and the lower valve rod 2, the driving mechanism that upper valve rod 22 upper end arranged outside have pair handwheel 25 active forces to carry out transmission; Also be provided with the alarm mechanism that communicates with bellows 4 outside valve pocket sections on the valve body 1.
As a kind of preferred version of the present utility model, described valve body 1 valve pocket bottom is provided with parallel having a down dip to inlet passage and outlet passage, and valve seat 17, inlet passage and outlet passage form oblique zigzag circulation passage.
As another kind of preferred version of the present utility model, described lower valve rod 2 is made as one with flap 24, is the conical surface that cooperatively interacts between valve seat 17 tops and the flap 24.
As another preferred version of the present utility model, described lower valve rod 2 bottom arranged outside have valve pocket 3,2 of bellows 4 bottoms and lower valve rods seal by lower joint sleeve 16, the top by overlap 12 in the last connection, on connect sealing gasket 13 and seal, valve pocket 3 upper ends highly are higher than the joint height of bellows 4 bottoms and lower valve rod 2.
Be provided with the support 18 that is used for the support fixation driving mechanism between described valve gap 9 and the driving mechanism.
As further preferred version of the present utility model, described cooling mechanism is made up of multi-disc radiating piece 5, and what valve body 1 outside of cooling mechanism upper and lower end also was provided with supporting use and played interconnect function is screwed into bolt 6 and nut 7.
Described filler 11 is a graphite layer, and filler 11 lower ends are provided with Packing seat 10, and valve gap 9 tops are fixed with hold-down grid 15 by the matching used bolt 6 that is screwed into nut 7, also are provided with filler gland 14 between hold-down grid 15 and filler 11.
As further preferred version of the present utility model, described driving mechanism is the bearing driving mechanism, by the copper nut 28 that is sleeved on upper valve rod 22 outsides, bearing housing 26 and be arranged between the two thrust-bearing 27 and form, bearing housing 26 inside, thrust-bearing 27 upper ends are provided with Bearing housing 29, are provided with flat key 8 between bearing housing 26 bottoms and upper valve rod 22 joints, lower valve rod 2 outsides and valve body 1 internal chamber wall; When handwheel 25 is the manual work mode, with the outside, termination that is connected of handwheel 25 cap nut 36 is installed at upper valve rod 22, handwheel 25 is fixed on the outside, copper nut 28 upper ends, and copper nut 28 is provided with flat key 8 with handwheel 25 joints; When handwheel 25 was electronic working method, upper valve rod 22 outsides between handwheel 25 and the driving mechanism also were equipped with Electric actuator 21, and the joint of Electric actuator 21 bottoms and upper valve rod 22 is provided with clutch 38.
As further again preferred version of the present utility model, described alarm mechanism is the joint 37 that leaks hunting, and communicates with the valve pocket section of bellows 4 tops by the Signal connector that is provided with on it.
As another preferred version of the present utility model, described valve body 1, valve gap 9 are connected and sealed with welding manner with the joint of cooling mechanism.
To sum up, adopt a kind of bellows sodium of the utility model stop valve, have the following advantages: 1, sound construction, use easy and simple to handle; 2, the bellows outside has increased the good cooling mechanism of radiating effect, and is good to the isolation effect of heat; 3, good seal performance, safer, more reliable, realize the double seal function by filler, bellows, and being tightly connected reliably between each Sealing; 4, have warning function, when bellows leaks, in time remind the user to take corresponding measure at sodium; 5, set up the connection compensation mechanism, valve rod is divided into upper valve rod and lower valve rod two-part, avoid the problem of the poor rigidity that elongated valve stem is prone in using, also efficiently solved valve rod and the valve body impaired problem of heat expansion contractibility inconsistent caused sealability afterwards of being heated simultaneously.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the electronic bellows sodium of the utility model first preferred implementation stop valve.
Fig. 2 is the structural representation of the manual bellows sodium of the utility model second preferred implementation stop valve.
Description of reference numerals:
The 1-valve body; The 2-lower valve rod; The 3-valve pocket;
The 4-bellows; The 5-radiating piece; 6-is screwed into bolt;
The 7-nut; The 8-flat key; The 9-valve gap;
The 10-Packing seat; The 11-filler; Cover in the last connection of 12-;
The last connection of 13-sealing gasket; 14-filler gland; The 15-hold-down grid;
The 16-lower joint sleeve; The 17-valve seat; The 18-support;
The 19-steel wire; 20-connects cutting ferrule; The 21-sheath;
The 22-upper valve rod; 23-takes over; The 24-flap;
The 25-handwheel; The 26-bearing housing; The 27-thrust-bearing;
The 28-copper nut; The 29-Bearing housing; The 30-Cock screw;
The 31-Electric actuator; The 32-rivets for rame plate; The 33-label;
34-aperture direction board; The 35-screw; The 36-cap nut;
The 37-joint that leaks hunting; The 38-clutch.
Embodiment
First preferred implementation, as shown in Figure 1, the valve gap 9 that described electronic bellows sodium stop valve comprises valve body 1, place the inner flap 24 that is used with valve seat 17 of valve body 1, be fixed together with valve body 1 make-up, the valve rod that runs through valve gap 9 and fixedly connected with flap 24, the bellows 4 that is installed in the handwheel 25 of the valve rod the other end and is sleeved on valve rod valve pocket section, its lower valve rod 2 is made as one with flap 24.Sealing is provided with cooling mechanism between valve body 1 and the valve gap 9, and bellows 4 is sleeved in valve body 1 and the formed lower valve rod 2 valve pocket sections of cooling mechanism.Be fixed with making product nameplate 33 in valve body 1 upper outside by rivets for rame plate 32.Valve body 1 valve pocket bottom is provided with parallel having a down dip to inlet passage and outlet passage, valve seat 17, inlet passage and outlet passage form oblique zigzag circulation passage, the inlet passage and the outlet passage outside all join with adapter 23, and are the conical surface that cooperatively interacts between valve seat 17 tops and the flap 24.In the working procedure, drive valve rods by rotation hand wheel 25 and move up and down the unlatching that realizes valve, close and the adjusting of valve opening.
Described valve rod is by being connected and fixed to the upper valve rod 22 of one and forming with lower valve rod 2 by connecting compensation mechanism, lower valve rod 2 runs through valve gap 9 and fixedlys connected with flap 24, upper valve rod 22 the other ends are installed handwheel 25, upper valve rod 22 outsides between handwheel 25 and the driving mechanism also are equipped with Electric actuator 21, and the joint of Electric actuator 21 bottoms and upper valve rod 22 is provided with clutch 38.Its upper valve rod 22 is provided with the thin termination that is connected with the connecting end of lower valve rod 2, it connects compensation mechanism and is made up of fixedly connected two thin connection cutting ferrule 20 and sheaths 21 thereof that connect the termination, and sheath 21 suit upper valve rods 22 are fixed with lower valve rod 2 outsides and by steel wire 19.The driving mechanism that upper valve rod 22 arranged outside have is 21 adjoint with Electric actuator, handwheel 25 active forces are carried out transmission, be provided with the support 18 that is used for the support fixation driving mechanism between valve gap 9 and the driving mechanism, be that support 18 is positioned at peripheral four sides of connection compensation mechanism, support 18 is provided with the aperture direction board 34 that installs and fixes by screw 35 in addition.Driving mechanism is the bearing driving mechanism, by the copper nut 28 that is sleeved on upper valve rod 22 outsides, bearing housing 26 and be arranged between the two thrust-bearing 27 and form, handwheel 25 is fixed on the outside, copper nut 28 upper ends, copper nut 28 is provided with the flat key 8 that is used to be connected and fixed with handwheel 25 joints, and bearing housing 26 inside, thrust-bearing 27 upper ends are provided with Bearing housing 29, and its Bearing housing 29 is fixed on bearing housing 26 inside by Cock screw 30.And bearing housing 26 bottoms and upper valve rod 22 joints are provided with flat key 8, this flat key 8 make valve rod can only move up and down can not can along with handwheel 25 rotation and rotate, in order to avoid damage bellows 4., the support upper and lower end is separately fixed on bearing housing 26, the valve gap 9 with nut 7 by the matching used bolt 6 that is screwed into.By connecting the compensating action of compensation mechanism, solve elongated valve stem poor rigidity, valve rod and valve body 1 problems such as the inconsistent caused sealability of heat expansion contractibility is impaired of being heated afterwards, avoid if the valve rod contractibility is relatively large, excessive to the pressure stress of bottom valve seat 17, fragile valve seat 17; Otherwise if the less relatively sealability that can have a strong impact on valve again of valve rod contractibility.
In addition, sealing is provided with the cooling mechanism of being made up of multi-disc radiating piece 5 between valve body 1 and the valve gap 9, valve body 1, valve gap 9 is connected and sealed with welding manner with the joint of cooling mechanism, and valve body 1 outside of cooling mechanism upper and lower end also be provided with supporting use and play interconnect function be screwed into bolt 6 and nut 7.And bellows 4 is sleeved in valve body 1 and the formed lower valve rod 2 valve pocket sections of cooling mechanism, 2 of the bottom of bellows 4 and lower valve rods seal by lower joint sleeve 16, the top by overlap 12 in the last connection, on connect sealing gasket 13 and seal, lower valve rod 2 bottom arranged outside have valve pocket 3, and valve pocket 3 upper ends highly are higher than the joint height of bellows 4 bottoms and lower valve rod 2.The valve pocket section upper end part, lower valve rod 2 outside that joins with valve gap 9 is provided with the filler 11 that seals usefulness, filler 11 lower ends are provided with Packing seat 10, and its filler 11 is a graphite layer, valve gap 9 tops are fixed with hold-down grid 15 by the matching used bolt 6 that is screwed into nut 7, also are provided with filler gland 14 between hold-down grid 15 and filler 11.In addition, below the filler 11, be provided with flat key 8 between lower valve rod 2 outsides and valve body 1 internal chamber wall, this flat key 8 make lower valve rod 2 can only move up and down can not can along with handwheel 25 rotations and rotate.Also be provided with the alarm mechanism that communicates with bellows 4 outside valve pocket sections on the valve body 1 simultaneously, this alarm mechanism is the joint 37 that leaks hunting, and communicates with the valve pocket section of bellows 4 tops by the Signal connector that is provided with on it.
In the working procedure of the utility model bellows sodium stop valve, drive upper valve rods 22 by Electric actuator 31 rotation hand wheels 25 and move up and down with lower valve rod 2, realize valve unlatching, close and aperture is regulated.Specifically be at first to drive the copper nut 28 that is fixedly linked with it to rotate, move up and down with lower valve rod 2 thereby further drive upper valve rod 22 at bearing housing 26 by rotation hand wheel 25.Molten sodium is full of in whole bellows 4 inside, realize first step sealing by bellows 4 to molten sodium, in case bellows 4 leak, when leaking to the valve pocket section outside the bellows 4, filler 11 by the valve pocket section setting of joining with valve gap 9 further seals, to prevent its leakage.Simultaneously, the joint 37 that leaks hunting detects the situation that molten sodium leaks from bellows 4, thereby the alarm signal of sending reminds the user in time to take corresponding measure.Promptly under the situation that bellows 4 takes place to leak, filler 11 can also play the second heavy protective action, and alarm mechanism sends alarm signal simultaneously, and the user in time takes corresponding remedial measure, thereby sealability is higher, safer, more reliable.
Second preferred implementation, as shown in Figure 2, the handwheel of described manual bellows sodium stop valve 25 adopts manual modes, thereby handwheel 25 is directly adjoint with driving mechanism, between Electric actuator 21 is not set.Manual rotation hand wheel 25 and drive upper valve rod 22 by driving mechanism and move up and down with lower valve rod 2, and with the outside, termination that is connected of handwheel 25 cap nut 36 is installed at upper valve rod 22, upper valve rod 22 is provided with the flat key 8 that is connected and fixed usefulness with handwheel 25 joints, and this flat key 8 makes handwheel 25 drive cap nuts 36 rotate rotation together simultaneously.The structure of all the other each several parts is identical with first preferred implementation with function.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (10)
1. bellows sodium stop valve, comprise valve body (1), place the inner flap (24) that is used with valve seat (17) of valve body (1), the valve gap (9) that is fixed together with valve body (1) make-up, the valve rod that runs through valve gap (9) and fixedly connected with flap (24), the bellows (4) that is installed in the handwheel (25) of the valve rod the other end and is sleeved on valve rod valve pocket section, it is characterized in that: described valve rod is made up of with lower valve rod (2) the upper valve rod (22) that is connected and fixed to one by the connection compensation mechanism, lower valve rod (2) runs through valve gap (9) and fixedlys connected with flap (24), and upper valve rod (22) the other end is installed handwheel (25); Upper valve rod (22) is provided with the thin termination that is connected with the connecting end of lower valve rod (2), described connection compensation mechanism is made up of fixedly connected two thin connection cutting ferrule (20) and sheaths (21) thereof that connect the termination, sheath (21) the suit upper valve rod (22) and lower valve rod (2) outside; Sealing is provided with cooling mechanism between valve body (1) and the valve gap (9), and bellows (4) is sleeved in valve body (1) and the formed lower valve rod of cooling mechanism (2) the valve pocket section; Be provided with the filler (11) of sealing usefulness between valve gap (9) upper end and the lower valve rod (2), the driving mechanism that upper valve rod (22) upper end arranged outside has pair handwheel (25) active force to carry out transmission; Also be provided with the alarm mechanism that communicates with the outside valve pocket section of bellows (4) on the valve body (1).
2. according to the described bellows sodium of claim 1 stop valve, it is characterized in that: described valve body (1) valve pocket bottom is provided with parallel having a down dip to inlet passage and outlet passage, and valve seat (17), inlet passage and outlet passage form oblique zigzag circulation passage.
3. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described lower valve rod (2) is made as one with flap (24), is the conical surface that cooperatively interacts between valve seat (17) top and the flap (24).
4. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described lower valve rod (2) bottom arranged outside has valve pocket (3), seal by lower joint sleeve (16) between bellows (4) bottom and lower valve rod (2), the top by cover (12) in the last connection, on connect sealing gasket (13) and seal, valve pocket (3) upper end highly is higher than the joint height of bellows (4) bottom and lower valve rod (2).
5. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: be provided with the support (18) that is used for the support fixation driving mechanism between described valve gap (9) and the driving mechanism.
6. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described cooling mechanism is made up of multi-disc radiating piece (5), and what the valve body of cooling mechanism upper and lower end (1) outside also was provided with supporting use and played interconnect function is screwed into bolt (6) and nut (7).
7. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described filler (11) is graphite layer, filler (11) lower end is provided with Packing seat (10), valve gap (9) top is fixed with hold-down grid (15) by the matching used bolt (6) that is screwed into nut (7), also is provided with filler gland (14) between hold-down grid (15) and filler (11).
8. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described driving mechanism is the bearing driving mechanism, by the copper nut (28), the bearing housing (26) that are sleeved on upper valve rod (22) outside and be arranged on thrust-bearing between the two (27) and form, bearing housing (26) is inner, thrust-bearing (27) upper end is provided with Bearing housing (29), is provided with flat key (8) between bearing housing (26) bottom and upper valve rod (22) joint, lower valve rod (2) outside and valve body (1) internal chamber wall; When handwheel (25) is the manual work mode, with the outside, termination that is connected of handwheel (25) cap nut (36) is installed at upper valve rod (22), handwheel (25) is fixed on the outside, copper nut (28) upper end, and copper nut (28) is provided with flat key (8) with handwheel (25) joint; When handwheel (25) was electronic working method, upper valve rod (22) outside between handwheel (25) and the driving mechanism also was equipped with Electric actuator (21), and Electric actuator (21) bottom is provided with clutch (38) with the joint of upper valve rod (22).
9. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described alarm mechanism is the joint that leaks hunting (37), communicates with the valve pocket section of bellows (4) top by the Signal connector that is provided with on it.
10. according to claim 1 or 2 described bellows sodium stop valves, it is characterized in that: described valve body (1), valve gap (9) are connected and sealed with welding manner with the joint of cooling mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820028101XU CN201137751Y (en) | 2008-01-14 | 2008-01-14 | Corrugated pipe sodium stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820028101XU CN201137751Y (en) | 2008-01-14 | 2008-01-14 | Corrugated pipe sodium stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137751Y true CN201137751Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820028101XU Expired - Lifetime CN201137751Y (en) | 2008-01-14 | 2008-01-14 | Corrugated pipe sodium stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137751Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN104653789A (en) * | 2015-03-03 | 2015-05-27 | 中国科学院合肥物质科学研究院 | Electric heating liquid-state metal valve with leakage detection |
| CN110553046A (en) * | 2018-06-04 | 2019-12-10 | 中核苏阀科技实业股份有限公司 | Large-caliber high-temperature liquid metal sodium valve |
| WO2021143495A1 (en) * | 2020-01-17 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Corrugated pipe stop valve |
-
2008
- 2008-01-14 CN CNU200820028101XU patent/CN201137751Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN101975279B (en) * | 2010-11-03 | 2012-07-25 | 淄博汇华阀业有限公司 | Early warning stop valve |
| CN104653789A (en) * | 2015-03-03 | 2015-05-27 | 中国科学院合肥物质科学研究院 | Electric heating liquid-state metal valve with leakage detection |
| CN104653789B (en) * | 2015-03-03 | 2017-03-29 | 中国科学院合肥物质科学研究院 | A kind of electrical heating liquid metal valve with Leak Detection |
| CN110553046A (en) * | 2018-06-04 | 2019-12-10 | 中核苏阀科技实业股份有限公司 | Large-caliber high-temperature liquid metal sodium valve |
| WO2021143495A1 (en) * | 2020-01-17 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Corrugated pipe stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI'AN GUANGHE VALVE CO., LTD. Free format text: FORMER OWNER: XI'AN NUCLEAR FACILITIES LIMITED COMPANY GEXIN VALVE WORKS Effective date: 20110412 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710021 WEIBIN STREET, XUJIAWAN, XI'AN CITY, SHAANXI PROVINCE TO: 710021 INSIDE OF EAST AREA, NORTHWEST INSTITUTE OF NUCLEAR TECHNOLOGY, NO. 5, WEIBIN STREET, XUJIAWAN, NORTH SUBURB, XI'AN CITY, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110412 Address after: 710021, Shaanxi Province, Xi'an, Beijiao Xu Xu Bay, Weibin street, 5 West nuclear East Patentee after: XI'AN GUANGHE VALVE CO., LTD. Address before: 710021 Weibin street, Xu Jia Bay, Shaanxi, Xi'an Patentee before: Xi'an Nuclear Facilities Limited Company Gexin Valve Works |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081022 |