CN203963004U - Seal arrangement - Google Patents
Seal arrangement Download PDFInfo
- Publication number
- CN203963004U CN203963004U CN201420370003.XU CN201420370003U CN203963004U CN 203963004 U CN203963004 U CN 203963004U CN 201420370003 U CN201420370003 U CN 201420370003U CN 203963004 U CN203963004 U CN 203963004U
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- Prior art keywords
- seal
- connector
- pad
- cone
- conical surface
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000003032 molecular docking Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 abstract description 22
- 238000009434 installation Methods 0.000 abstract description 10
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000003908 quality control method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a kind of seal arrangement, be applicable to the Butt sealing of high-temperature and pressure pipeline and/or equipment, comprise the first seal connector, the second seal connector and cone seal pad.The first seal connector has the first support conical surface and the first seal side, and the second seal connector has the second support conical surface and the second seal side, when the first seal connector and the second seal connector are biased after locking, the inner side surface of cone seal pad and the first seal side interference fit, the outer side surface of cone seal pad and the second seal side interference fit, and what the bottom surface of cone seal pad and end face were sealed is pressed between the first support conical surface and the second support conical surface, to solve the installation difficulty of existing nuclear power station control rod drive mechanisms (CRD) and to seal insecure problem, simultaneously, also can solve petrochemical industry, the high-temperature high-pressure apparatus tapping sealing of machinery and energy industry and and external equipment between sealing problem.
Description
Technical field
The utility model relates to a kind of field of sealing technology, relates in particular to a kind of simple and reliable seal arrangement that seals.
Background technique
As shown in Figure 1, the installation that nuclear power station control rod drive mechanisms (CRD) drives is at present to be connected by screw thread between its pneumatic shell 210 and reactor lid base 220, seals to limit in control rod drive mechanisms (CRD) inner chamber be with radioactive reactor coolant water to leak by " J " type weld seam between its pneumatic shell 210 and reactor lid base 220.Because the each control rod drive mechanisms (CRD) weight of nuclear power station is about 650Kg, in the process being threaded between its pneumatic shell 210 and reactor lid base 220, the frictional force producing because of control rod drive mechanisms (CRD) deadweight between screw pair is larger, causes screw thread between pneumatic shell 210 and reactor lid base 220 to screw more difficult.In addition, because the profile overall length of control rod drive mechanisms (CRD) is about 6000mm, in the process being threaded between its pneumatic shell 210 and reactor lid base 220, control rod drive mechanisms (CRD) easily swings and deflection, also causes centering and screw thread between pneumatic shell 210 and reactor lid base 220 to screw more difficult.Due to the control rod drive mechanisms (CRD) being furnished with on reactor lid more than 60 covers, and between its pneumatic shell 210 and reactor lid base 220 fall " J " type weld seam seal welding must after control rod drive mechanisms (CRD) has been threaded with reactor lid base 220, just can carry out, thereby the operating space of sealing welding is smaller, the rear butt welded seam quality inspection of welding is also more difficult, and the method for inspection that can adopt by spatial constraints is also very restricted.In control rod drive mechanisms (CRD) replacement process, need in addition to adopt special cutting device to cut open seal weld and just can complete dismounting and the replacement of control rod drive mechanisms (CRD).
Comprehensive above reason, there is the shortcomings such as the poor operability that installation difficulty is large, seal weld welding space is little, quality control enforcement difficulty is large and maintenance is replaced in the sealing that nuclear power station control rod drive mechanisms (CRD) adopts at present and mounting structure.
Separately, as shown in Figure 2, between High Temperature High Pressure, extra-high tension unit (pipeline) and the external equipment (pipeline) of petrochemical industry, machinery and energy industry, sealing all adopts the machinery static of flat gasket structure to seal at present.Due to sealing surface 320 and flat gasket 310 foozle reasons, the machinery static of this kind of structure seals in the manufacture process that the pretightening force that need to connect by fastening piece 330 overcomes sealing surface 320, flat gasket 310 and produces size error and surface error, eliminates the invisible gap of naked eyes between sealing surface 320 and just can reach the effect of sealing.Therefore, it is large that existing machinery static sealing exists installation fastening force, the defect that accuracy of manufacturing is high and cost is high of flat gasket 310 and sealing surface 320.
Therefore, be badly in need of wanting a kind of install simple, sealing is reliable and low seal arrangement and the encapsulating method of cost overcomes above-mentioned defect.
Model utility content
The purpose of this utility model is to provide a kind of and installs simply, sealing is reliable and the low seal arrangement of cost.
For realizing above-mentioned object, seal arrangement of the present utility model is applicable to the Butt sealing of high-temperature and pressure pipeline and/or equipment, comprises the first seal connector and the second seal connector that mutual docking coordinates and is stacked at the cone seal pad between described the first seal connector and the second seal connector.Described the first seal connector has the first the first seal side that supports the conical surface and match with the inner side surface of described cone seal pad coordinating with the bottom surface of described cone seal pad, and described the second seal connector has the second the second seal side that supports the conical surface and match with the outer side surface of described cone seal pad matching with the end face of described cone seal pad; When described the first seal connector and the second seal connector coordinate and when both are not biased locking in docking, the inner side surface of described cone seal pad and described the first seal side Spielpassung, the outer side surface of described cone seal pad and described the second seal side Spielpassung, the bottom surface of described cone seal pad and described first is supported conical surface part and is contacted, and the end face of described cone seal pad and described second supports also local contact of the conical surface; When described the first seal connector and the second seal connector are biased after locking, the inner side surface of described cone seal pad and described the first seal side interference fit, the outer side surface of described cone seal pad and described the second seal side interference fit, and the bottom surface of described cone seal pad and end face and described first support the conical surface and described second and support conical surface close contact and be pressed in described first and support between the conical surface and the second support conical surface.
Preferably, seal arrangement of the present utility model also comprises the fastener assembly to described the first seal connector and the locking of the second seal connector application of force.
Preferably, described fastener assembly comprises clamping bolt and tightening nut, described clamping bolt is placed through described the first seal connector and the second seal connector, and the top of described clamping bolt is connected with described tightening nut respectively with bottom, and described tightening nut is locked described the first seal connector and the second seal connector.
Preferably, described fastener assembly comprises clamping bolt and tightening nut, one end of described clamping bolt can be connected with the one tapped hole in described the first seal connector and the second seal connector, the other end of described clamping bolt forms external part through the another one in described the first seal connector and the second seal connector, and described tightening nut is threaded with described external part.
Preferably, the scope of the bottom surface of described cone seal pad and the angle of taper of end face is 10 to 40 degree, and the scope of the inner side surface of described conical gasket and the angle of taper of outer side surface is 2 to 30 degree.
Preferably, the described first scope that supports the angle of taper of the conical surface or the second support conical surface is 2 to 30 degree.
Preferably, the scope of described magnitude of interference is 0.01 to 0.5 millimeter.
Preferably, the scope of the thickness of described cone seal pad is 1 to 6 millimeter.
Preferably, the described pipeline of described the first seal connector or the second seal connector and its Butt sealing and/or equipment are integral type structure.
Compared with prior art, seal arrangement of the present utility model is applied to nuclear power station advantage that control rod drive mechanisms (CRD) has: the flange that can realize between control rod drive mechanisms (CRD) and reactor lid base is connected, reduce the installation difficulty of control rod control driving mechanism, shorten installation period, reduce power plant construction cost; Realize welding weld seam between control rod drive mechanisms (CRD) and reactor lid base, improve the exploitativeness of installation quality control; Shorten the cycle that control rod drive mechanisms (CRD) maintenance is replaced, reduce maintenance cost.And seal arrangement of the present utility model be applied to petrochemical industry, machinery and energy industry High Temperature High Pressure, extra-high tension unit (pipeline) there is advantage and be: can reduce the pretightening force that fastening piece connects, the stress level that pretightening force produces fastening piece is low, therefore the range of choice of fastener material is large, correspondingly, the low and good seal of cost.
Brief description of the drawings
Fig. 1 is that existing used in nuclear power station is in the structural representation of the sealing configuration of connection pneumatic shell and reactor lid base.
Fig. 2 is the structural representation of the sealing configuration of existing high-temperature and pressure pipeline or equipment.
Fig. 3 is seal arrangement one embodiment's of the present utility model structural representation.
Fig. 4 is the enlarged view of A part in Fig. 3.
Fig. 5 is the phase diagram of A part in the time of the fastening pretension end-state of cone seal pad in Fig. 3.
Fig. 6 is another embodiment's of seal arrangement of the present utility model structural representation.
Fig. 7 is the enlarged view of B part in Fig. 6.
Fig. 8 is the phase diagram of B part in the time of the fastening pretension end-state of cone seal pad in Fig. 6.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, in accompanying drawing, similarly element numbers represents similar element.
Refer to Fig. 3 to Fig. 5, the seal arrangement 100 of the present embodiment comprises: docking coordinates mutually the first seal connector 10 and the second seal connector 20, and be stacked at the cone seal pad 30 between the first seal connector 10 and the second seal connector 20.The first seal connector 10 has the first the first seal side 11 that supports the conical surface 12 and match with the inner side surface 34 of cone seal pad 30 coordinating with the bottom surface 33 of cone seal pad 30, be preferably, the first support conical surface 12 is the layouts that are inclination on horizontal plane, the first seal side 11 is vertically to arrange, so that the bottom surface 33 to cone seal pad 30 and inner side surface 34 coordinate and seal action, preferably, the first support conical surface 12 is recessed conical surface, and the first seal side 11 is cylindrical cylndrical surface, to reach better cooperation and sealing effect.The second seal connector 20 has the second the second seal side 22 that supports the conical surface 21 and match with the outer side surface 32 of cone seal pad 30 matching with the end face 31 of cone seal pad 30, be preferably, the second support conical surface 21 is the layouts that are inclination on horizontal plane, the second seal side 22 is vertically to arrange, so that the end face 31 to cone seal pad 30 and outer side surface 32 coordinate and seal action, preferably, the second support conical surface 21 is the dome conical surface, and the second seal side 22 is cylindrical cylndrical surface, to reach better cooperation and sealing effect.When the first seal connector 10 and the second seal connector 20 coordinate and when both are not biased locking in docking, the original state of fastening pretension as shown in Figure 3 or Figure 4, inner side surface 34 and first seal side 11 Spielpassung of cone seal pad 30 now, the outer side surface 32 of cone seal pad 30 and the second seal side 22 Spielpassung; And the bottom surface 33 of cone seal pad 30 and first is supported the conical surface 12 parts and contacted, the end face 31 of cone seal pad 30 and second supports also local contact of the conical surface 21.When the first seal connector 10 and the second seal connector 20 are biased after locking, fastening pretension end-state as shown in Figure 5, inner side surface 34 and first seal side 11 interference fit of cone seal pad 30 now, specifically the inner side surface 34 of cone seal pad 30 and the first seal side 11 are transformed into interference fit by Spielpassung, the outer side surface 32 of cone seal pad 30 and the second seal side 22 interference fit, specifically the outer side surface 32 of cone seal pad 30 and the second seal side 22 are transformed into interference fit by Spielpassung, and the conical surface 12 close contacts are supported in the bottom surface 33 of cone seal pad 30 and first, the end face 31 of cone seal pad 30 and second supports the conical surface 21 close contacts, and cone seal pad 30 is pressed in the first support conical surface 12 and second and supports between the conical surface 21, realization is supported between the conical surface 21 bottom surface 33 of cone seal pad 30 and the sealed first support conical surface 12 and second that presses on of end face 31, thereby make cone seal pad 30, between the first seal connector 10 and the second seal connector 30 threes, form the reliable sealing surface of twice, the sealing surface of these twice can seal high-temperature high-pressure medium completely, reach the sealing effect without any dielectric leakage.More specifically, as follows:
Compared with the superior, the seal arrangement 100 of the present embodiment also comprises the fastener assembly 40 to the first seal connector 10 and the second seal connector 20 application of forces lockings, by this fastener assembly 40 to realize the fastening pretension of the application of force to the first seal connector 10 and the second seal connector 20.Particularly, fastener assembly 40 comprises clamping bolt 41 and tightening nut 42, clamping bolt 41 is placed through the first seal connector 10 and the second seal connector 20, and the top of clamping bolt 41 is connected with tightening nut 42 respectively with bottom, tightening nut 42 is locked the first seal connector 10 and the second seal connector 20, to realize the object of rapid-assembling/disassembling.
Simultaneously, the scope of the angle of taper (as shown in α+θ in Fig. 4) of the bottom surface 33 of cone seal pad 30 and end face 31 is 10 to 40 degree, this angle of taper is preferably 10 degree, 20 degree, 30 degree or 40 degree, and this angle of taper is the angle of cone seal pad 30 in the time of free state; When the angle of taper of cone seal pad 30 is during in fastening pretension end-state, the angle of taper (as shown in α in Fig. 5) of cone seal pad 30 now, the scope of this angle of taper is 2 to 30 degree.Corresponding, the first scope that supports the angle of taper (as shown in α in Fig. 5) of the conical surface 12 or the second support conical surface 21 is 2 to 30 degree.Meanwhile, the scope of the inner side surface 34 of cone seal pad 30 and the angle of taper of outer side surface 32 is 2 to 30 degree.
Moreover the scope of magnitude of interference is 0.01 to 0.5 millimeter, and the scope of the thickness of cone seal pad 30 is 1 to 6 millimeter.
Refer to Fig. 6 and Fig. 8, the structure of the seal arrangement 100` of the present embodiment and the first embodiment's seal arrangement 100 is basic identical, and distinctive points has:
First, the seal arrangement 100` of the present embodiment also establishes a cone seal pad 50 than the first embodiment's seal arrangement more than 100, accordingly, the first seal connector 10` also has the first first face 14 that is sealed and matched that supports the conical surface 13 and match with the outer side surface 52 of cone seal pad 50 coordinating with the bottom surface 53 of cone seal pad 50, be preferably, the first support conical surface 13 is the layouts that are inclination on horizontal plane, first face 14 that is sealed and matched is vertically to arrange, so that the bottom surface 53 to cone seal pad 50 and outer side surface 52 coordinate and seal action, preferably, the first support conical surface 13 is recessed conical surface, and first be sealed and matched face 14 for cylindrical cylndrical surface, to reach better cooperation and sealing effect.The second seal connector 20` also has the second second face 24 that is sealed and matched that supports the conical surface 23 and match with the inner side surface 54 of cone seal pad 50 matching with the end face 51 of cone seal pad 50, be preferably, the second support conical surface 23 is the layouts that are inclination on horizontal plane, second face 24 that is sealed and matched is vertically to arrange, so that the end face 51 to cone seal pad 50 and inner side surface 54 coordinate and seal action, preferably, the second support conical surface 23 is the dome conical surface, and second be sealed and matched face 24 for cylindrical cylndrical surface, to reach better cooperation and sealing effect.When the first seal connector 10` and the second seal connector 20` coordinate and when both are not biased locking in docking, the inner side surface 54 of cone seal pad 50 and second face 24 Spielpassung that are sealed and matched, the outer side surface 52 of cone seal pad 50 and first face 14 Spielpassung that are sealed and matched.The bottom surface 53 of cone seal pad 50 and first is supported the conical surface 13 parts and is contacted, and the end face 51 of cone seal pad 50 and second supports the conical surface 23 parts and contacts.When the first seal connector 10` and the second seal connector 20` are biased after locking, as shown in Figure 8, the inner side surface 54 of cone seal pad 50 and second face 24 interference fit that are sealed and matched, the outer side surface 52 of cone seal pad 50 and first face 14 interference fit that are sealed and matched, and what the bottom surface 53 of cone seal pad 50 and end face 51 were sealed presses between the first support conical surface 13 and the second support conical surface 23, therefore make the seal arrangement 100` of the present embodiment form multiple sealing channel, thereby sealing effect is better.
The second, the fastener assembly 40` of the present embodiment comprises clamping bolt 41` and tightening nut 42, one end of clamping bolt 41` is connected with the first seal connector 10` tapped hole 15, the other end of clamping bolt 41` is through the second seal connector 20` and form external part, specifically through the hold-down ring 60 being placed on the second seal connector 20`, tightening nut 42 is threaded with external part, to realize the object of rapid-assembling/disassembling.And in the first embodiment, fastener assembly 40 is to comprise clamping bolt 41 and tightening nut 42, the matching relationship of clamping bolt 41 and tightening nut 42 is asked for an interview described in the first embodiment, therefore be not described in detail in this.
Three, in the present embodiment, the scope of cone seal pad 50 and the end face of cone seal pad 30 and the angle of taper of bottom surface is 10 to 40 degree, is preferably 20 degree.The first scope that supports the angle of taper of the conical surface 13 or the second support conical surface 23 is 2 to 30 degree, is preferably 10 degree.The be sealed and matched scope of magnitude of interference of face 24 of the inner side surface 54 of cone seal pad 50 and second is 0.025 to 0.06 millimeter, the be sealed and matched scope of magnitude of interference of face 14 of the outer side surface 52 of cone seal pad 50 and first is 0.025 to 0.06 millimeter, the scope of the inner side surface 34 of cone seal pad 30 and the magnitude of interference of the first seal side 11 is 0.025 to 0.06 millimeter, and the scope of the outer side surface 32 of cone seal pad 30 and the magnitude of interference of the second seal side 22 is 0.025 to 0.06 millimeter.
Four, the thickness of cone seal pad 50 and cone seal pad 30 is 2 millimeters.
Compared with prior art, seal arrangement 100 of the present utility model, 100` are applied to nuclear power station advantage that control rod drive mechanisms (CRD) has and are: the flange that can realize between control rod drive mechanisms (CRD) and reactor lid base is connected, reduce the installation difficulty of control rod control driving mechanism, shorten installation period, reduce power plant construction cost; Realize welding weld seam between control rod drive mechanisms (CRD) and reactor lid base, improve the exploitativeness of installation quality control; Shorten the cycle that control rod drive mechanisms (CRD) maintenance is replaced, reduce maintenance cost.And seal arrangement 100 of the present utility model, 100` be applied to petrochemical industry, machinery and energy industry High Temperature High Pressure, extra-high tension unit (pipeline) there is advantage and be: can reduce the pretightening force that fastening piece connects, the stress level that pretightening force produces fastening piece is low, therefore the range of choice of fastener material is large, correspondingly, the low and good seal of cost.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.
Claims (9)
1. a seal arrangement, be applicable to the Butt sealing of high-temperature and pressure pipeline and/or equipment, it is characterized in that, described seal arrangement comprises the first seal connector and the second seal connector that mutual docking coordinates and is stacked at the cone seal pad between described the first seal connector and the second seal connector, described the first seal connector has the first the first seal side that supports the conical surface and match with the inner side surface of described cone seal pad coordinating with the bottom surface of described cone seal pad, described the second seal connector has the second the second seal side that supports the conical surface and match with the outer side surface of described cone seal pad matching with the end face of described cone seal pad, when described the first seal connector and the second seal connector coordinate and when both are not biased locking in docking, the inner side surface of described cone seal pad and described the first seal side Spielpassung, the outer side surface of described cone seal pad and described the second seal side Spielpassung, the bottom surface of described cone seal pad and described first is supported conical surface part and is contacted, and the end face of described cone seal pad and described second supports also local contact of the conical surface, when described the first seal connector and the second seal connector are biased after locking, the inner side surface of described cone seal pad and described the first seal side interference fit, the outer side surface of described cone seal pad and described the second seal side interference fit, and the bottom surface of described cone seal pad and end face and described first support the conical surface and described second and support conical surface close contact and be pressed in described first and support between the conical surface and the second support conical surface.
2. seal arrangement as claimed in claim 1, is characterized in that, also comprises the fastener assembly to described the first seal connector and the locking of the second seal connector application of force.
3. seal arrangement as claimed in claim 2, it is characterized in that, described fastener assembly comprises clamping bolt and tightening nut, described clamping bolt is placed through described the first seal connector and the second seal connector, and the top of described clamping bolt is connected with described tightening nut respectively with bottom, and described tightening nut is locked described the first seal connector and the second seal connector.
4. seal arrangement as claimed in claim 2, it is characterized in that, described fastener assembly comprises clamping bolt and tightening nut, one end of described clamping bolt is connected with the one tapped hole in described the first seal connector and the second seal connector, the other end of described clamping bolt forms external part through the another one in described the first seal connector and the second seal connector, and described tightening nut is threaded with described external part.
5. seal arrangement as claimed in claim 1, is characterized in that, the scope of the bottom surface of described cone seal pad and the angle of taper of end face is 10 to 40 degree, and the scope of the inner side surface of described cone seal pad and the angle of taper of outer side surface is 2 to 30 degree.
6. seal arrangement as claimed in claim 1, is characterized in that, the described first scope that supports the angle of taper of the conical surface or the second support conical surface is 2 to 30 degree.
7. seal arrangement as claimed in claim 1, is characterized in that, the scope of described magnitude of interference is 0.01 to 0.5 millimeter.
8. seal arrangement as claimed in claim 1, is characterized in that, the scope of the thickness of described cone seal pad is 1 to 6 millimeter.
9. seal arrangement as claimed in claim 1, is characterized in that, the described pipeline of described the first seal connector or the second seal connector and its Butt sealing and/or equipment are integral type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370003.XU CN203963004U (en) | 2014-07-04 | 2014-07-04 | Seal arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370003.XU CN203963004U (en) | 2014-07-04 | 2014-07-04 | Seal arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963004U true CN203963004U (en) | 2014-11-26 |
Family
ID=51923587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370003.XU Expired - Lifetime CN203963004U (en) | 2014-07-04 | 2014-07-04 | Seal arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121365A (en) * | 2014-07-04 | 2014-10-29 | 中科华核电技术研究院有限公司 | Sealing device and sealing method |
| CN104616706A (en) * | 2015-02-05 | 2015-05-13 | 喻杰 | Integrated pressure-resistant shell assembly |
-
2014
- 2014-07-04 CN CN201420370003.XU patent/CN203963004U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121365A (en) * | 2014-07-04 | 2014-10-29 | 中科华核电技术研究院有限公司 | Sealing device and sealing method |
| CN104616706A (en) * | 2015-02-05 | 2015-05-13 | 喻杰 | Integrated pressure-resistant shell assembly |
| CN104616706B (en) * | 2015-02-05 | 2017-12-15 | 喻杰 | A kind of pressure-resistant shell component of integration |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China General Nuclear Power Corporation |