CN203607104U - C-shaped sealing ring - Google Patents
C-shaped sealing ring Download PDFInfo
- Publication number
- CN203607104U CN203607104U CN201320781910.9U CN201320781910U CN203607104U CN 203607104 U CN203607104 U CN 203607104U CN 201320781910 U CN201320781910 U CN 201320781910U CN 203607104 U CN203607104 U CN 203607104U
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- Prior art keywords
- sealing ring
- middle layer
- type sealing
- layer
- spiral
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 238000004804 winding Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 21
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 229910052709 silver Inorganic materials 0.000 claims description 11
- 239000004332 silver Substances 0.000 claims description 11
- 229910001120 nichrome Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 abstract 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000002826 coolant Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229910000601 superalloy Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000003026 anti-oxygenic effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical group [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a C-shaped sealing ring which comprises a cladding layer, a middle layer and an inner layer, wherein the cladding layer is in the shape of a hollow circular ring, the middle layer is arranged in the hollow structure of the cladding layer and closely adhered to the inner wall of the cladding layer, the inner layer is arranged in the hollow structure of the middle tier and closely adhered to the inner wall of the middle layer, the cross sections of the cladding layer and the middle layer are respectively of a C-shaped structure, the inner layer is a spiral jam spring which is formed by winding a regular quadrangular wire and in the shape of a circular ring, the front and tail ends of the spiral jam spring are welded, the outside surface of the spiral jam spring forms a smooth cladding surface, and the cladding surface is tightly adhered to the inner wall of the inner layer. The C-shaped sealing ring has a higher sealing performance, and when the pressure and/or temperature of a medium is changed, the compression-springback characteristic of the spiral jam spring keeps the stability of the sealing performance, so that the sealing performance of a reactor pressure vessel is ensured; the C-shaped sealing ring can adapt to the working conditions such as high temperature, high pressure, instantaneous large temperature difference, and pressure fluctuation of nuclear power stations, and the processing difficulty is greatly reduced.
Description
Technical field
The utility model relates to nuclear power plant reactor sealing for pressure vessels field, relates in particular to a kind of reactor pressure vessel C type sealing ring.
Background technology
At present, presurized water reactor is the main flow heap type of nuclear power station, the reactor in the whole world approximately 60% is all presurized water reactor, pressurized-water reactor nuclear power plant is generally divided into two loops: a circuit system and secondary coolant circuit system, one circuit system is called nuclear island part, secondary coolant circuit system is conventional island part, has steam turbine part and master section.One circuit system and the secondary coolant circuit system of pressurized-water reactor nuclear power plant separate completely, and it is an airtight circulation system.The principle process of nuclear power station is: main pump is sent pressure coolant into reactor, and the heat energy that cooling medium is emitted nuclear fuel is taken reactor out of, and enters steam generator, by heat-transfer pipe, heat is passed to the secondary circuit water outside pipe, makes water boiling produce steam; Coolant flow, after steam generator, then is sent into reactor by main pump, and circulation, constantly takes and change generation steam out of the heat in reactor so back and forth, from steam generator high temperature and high pressure steam out, promotes Turbo-generator Set generating.The waste vapour that did merit condenses into water in condenser, then sends into well heater by the feed pump that condenses, and after reheating, sends steam generator back to, the secondary circuit circulation system that Here it is.
Wherein, nuclear power plant reactor pressure vessel is made up of cylindrical shell and top cover two parts, between cylindrical shell and top cover, is realized and being tightly connected by shell flange, top cover flange and seal.The existence of seal has guaranteed that the leakage rate of cooling medium in pressure vessel can maintain in allowed limits.At present, the seal that China's nuclear power plant reactor pressure vessel uses and the material using thereof are external product, because this product is the staple product relevant to nuclear safety, therefore the difficulty of nuclear power unit of operation application home products is larger.But the cost of a set of sealing for pressure vessels part needs hundreds of thousands, and often open primary first-order equation heap top cover with regard to needing more transducer set seal, caused thus the expensive of seal.Therefore, seal production domesticization is not only of great importance in economic benefit, and Chinese Nuclear Power localization process is had to important strategic importance.
As everyone knows, the cooling medium in pressure vessel has high radioactivity, if occur to leak will serious threat society safety.Therefore,, when nuclear power station unit normally moves, require seal can bear high temperature, high pressure operating mode; In Unit Commitment when heap,, seal will bear lifting/lowering temperature speed and reach the large action of thermal difference of 28 ℃/h, and in some cases, the transient state temperature difference also likely reaches 128 ℃; In addition, under some transient condition of the normal operation of unit, seal also will bear the effect of pressure surge.Thus the sealing property of seal has been proposed to very high requirement, these requirements are that conventional seal institute is unappeasable; For meeting the high request of above-mentioned sealing property, the structure of seal has its singularity, and its structural singularity causes the difficulty of its processing technology larger.
Therefore, be necessary to develop a kind of seal that can adapt to nuclear power station high temperature, high pressure and the instantaneous large temperature difference, pressure surge operating mode, guarantee the sealing property of reactor pressure vessel, to guarantee the safe operation of nuclear power station, reduce its difficulty of processing simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of seal that can adapt to nuclear power station high temperature, high pressure and the instantaneous large temperature difference, pressure surge operating mode, guarantee the sealing property of reactor pressure vessel, to guarantee the safe operation of nuclear power station, its difficulty of processing reduces greatly simultaneously.
For achieving the above object, the technical solution of the utility model is: a kind of C type sealing ring is provided, it is applicable to reactor pressure vessel, and described C type sealing ring is circular, described C type sealing ring comprises the clad that is hollow circular ring shape, middle layer and build-up layer, described middle layer is placed in the hollow structure of described clad and is close to the inwall of described clad, described build-up layer is placed in the hollow structure in described middle layer and is close to the inwall in described middle layer, and described clad, the cross section in described middle layer is c-shaped structure all, wherein, described build-up layer is circular spiral the tight spring that be forming by a Wire-winding that is four-prism shape, the head and the tail of described spiral tight spring weld mutually, and the outside surface of described spiral tight spring forms smooth coated face, described coated face is close to the inwall in described middle layer.
Preferably, described middle layer is by the band roll-forming of a nichrome material, and the head and the tail of described band weld mutually.
Preferably, described clad is with roll-forming by silver, and the head and the tail of described silver band weld mutually.Because silver-colored hardness is less than the hardness of nichrome, therefore, clad has high-ductility, thereby plays the effect of making up preferably when it is contacted with the sealing surface in middle layer.
Preferably, the temperature rate that described C type sealing ring can bear is more than or equal to 28 ℃/h.
Preferably, in heating and cooling process, the slip of described C type sealing ring is less than or equal to 0.1L/h; When temperature, pressure stability, described C type sealing ring is without leakage.
Preferably, described clad circumferentially offers the first opening along it, and described middle layer circumferentially offers the second opening along it, described the first opening corresponding with described the second opening and be communicated with.
Compared with prior art, due to C type sealing ring of the present utility model, it comprises the clad that is hollow circular ring shape, middle layer and build-up layer, described middle layer is placed in the hollow structure of described clad and is close to the inwall of described clad, described build-up layer is placed in the hollow structure in described middle layer and is close to the inwall in described middle layer, and described clad, the cross section in described middle layer is c-shaped structure all, wherein, described build-up layer is circular spiral the tight spring that be forming by a Wire-winding that is four-prism shape, the head and the tail of described spiral tight spring weld mutually, and the outside surface of described spiral tight spring forms smooth coated face, described coated face is close to the inwall in described middle layer.When work, C type sealing ring is impaction state under bolt pretightening effect, and itself and sealing surface fit tightly and play sealing function; Form because the also tight spring of spiral adopts the Wire-winding that is four-prism shape, therefore its radial compression-rebound characteristics has obtained further optimization, has promoted sealing property; And the smooth coated face of spiral tight spring is close to the inwall in middle layer, compared with adopting the spiral of cylindrical Wire-winding one-tenth the undulatory coated face of tight spring, its smooth coated face is without the gap at turn top, therefore complete gapless between its coated face and the inwall in middle layer, therefore load distribution is more even, thereby promotes linear sealing performance; Therefore when pressure medium or/and temperature while occurring changing, is kept the stability of sealing property, thereby guarantees the sealing property of reactor pressure vessel by compression-rebound characteristics of spiral tight spring, guarantee the safe operation of nuclear power station; And the smooth coated face of spiral tight spring, the processing technology difficulty while making middle layer coated reduces greatly; And this C type sealing ring can adapt to nuclear power station high temperature, high pressure and the instantaneous large temperature difference, pressure surge operating mode.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model C type sealing ring.
Fig. 2 is the part enlarged diagram of C type sealing ring in Fig. 1.
Fig. 3 is the schematic cross-section of Fig. 2.
Fig. 4 is the cut-open view along A-A line in Fig. 1.
Fig. 5 is the cut-open view along B-B line in Fig. 4.
Fig. 6 is the cut-open view that is equiped with the reactor pressure vessel of the utility model C type sealing ring.
Fig. 7 is the enlarged diagram of A part in Fig. 6.
Fig. 8 is the enlarged diagram of B part in Fig. 7.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, in accompanying drawing, similarly element numbers represents similar element.The C type sealing ring 1 that the utility model provides, can adapt to nuclear power station high temperature, high pressure and the instantaneous large temperature difference, pressure surge operating mode, guarantees the sealing property of reactor pressure vessel, and to guarantee the safe operation of nuclear power station, its difficulty of processing reduces greatly simultaneously.
As shown in Figure 1, C type sealing ring 1 provided by the utility model, it is circular, and the utility model C type sealing ring 1 is major diameter sealing ring, preferably, C type sealing ring 1 described in the utility model is mainly that diameter is the C type sealing ring of 3983.1mm, two kinds of models of 4071.1mm.
As Figure 1-Figure 5, described C type sealing ring 1 comprises the clad 11, middle layer 12 and the build-up layer 13 that are hollow circular ring shape, described middle layer 12 is placed in the hollow structure of described clad 11 and is close to the inwall of described clad 11, described build-up layer 13 is placed in the hollow structure in described middle layer 12 and is close to the inwall in described middle layer 12, and the cross section in described clad 11, described middle layer 12 is c-shaped structure (see figure 4) all, therefore the utility model sealing ring is called C type sealing ring 1.
C type sealing ring 1 described in the utility model, middle layer 12 is closely coated on outside build-up layer 13, and sealing function, for spacer medium and environment, is played in middle layer 12; Clad 11 is closely coated on outside middle layer 12, thereby clad 11 has and when high-ductility makes it contact with the sealing surface in middle layer 12, plays the effect of making up.Particularly, described clad 11 circumferentially offers the first opening 111 along it, described middle layer 12 circumferentially offers the second opening 121 along it, clad 11 be coated on middle layer 12 outer after, described the first opening 111 is corresponding with described the second opening 121 and be communicated with into an overall opening (see figure 4); Therefore, all c-shaped structures of the cross section in described clad 11, described middle layer 12; After C type sealing ring 1 is installed, the first opening 111 and described the second opening 121 are positioned at the pressure-bearing side opposite face (referring to aftermentioned) of C type sealing ring 1, the deformation of sealing surface when adapting to medium working conditions change.
As Figure 2-Figure 5, described build-up layer 13 is circular spiral the tight springs that are that form by a Wire-winding that is four-prism shape, and the head and the tail of described spiral tight spring weld mutually.And the Wire-winding that is four-prism shape due to employing forms spiral tight spring, stickiness between each circle of spiral tight spring is better, therefore, the outside surface of spiral tight spring forms a continuous and smooth coated face, after middle layer 12 is coated on outside spiral tight spring, described coated face is close to the inwall in described middle layer 12, compared with adopting the spiral of cylindrical Wire-winding one-tenth the undulatory coated face of tight spring, the smooth coated face of the utility model spiral tight spring does not have the gap on turn top, therefore, complete gapless (as shown in Figure 5) between the utility model spiral the tight coated face of spring and the inwall in middle layer 12, therefore, the load of spiral tight spring distributes more even, thereby promote linear sealing performance.In addition, the outside surface of spiral tight spring forms a continuous and smooth coated face (seeing shown in Fig. 3, Fig. 4), compared with adopting the spiral of cylindrical Wire-winding one-tenth the undulatory coated face of tight spring, between the utility model spiral the tight coated face of spring and the inwall in middle layer 12, can better fit, therefore make the coated processing technology difficulty in middle layer 12 greatly reduce.
In addition, employing is spiral the tight spring that the Wire-winding of four-prism shape forms and adopts compared with the spiral tight spring that cylindrical Wire-winding becomes, if it is identical with the bottom surface diameter of cylindrical thread material to be the bottom surface length of side of silk material of four-prism shape, as shown in Figure 5, the silk material that the utility model spiral tight spring use is four-prism shape, therefore, the cross section of this material is square, supposes that this foursquare length of side is L; Correspondingly, the cross section of cylindrical silk material is rounded, and this circular diameter is also L; Calculate known by stress analysis, the radial shape variable coefficient of the utility model spiral tight spring is greater than the spiral of the aforementioned cylindrical silk material of employing formation the radial shape variable coefficient of tight spring, therefore, employing is spiral the tight spring that four-prism shape silk material forms, its compression and back-bullet characteristic has radially obtained further optimization, has therefore promoted sealing property.
In the utility model, described spiral tight spring adopt the Wire-winding of nickel base superalloy material to form, in described nickel base superalloy, the mass percentage content of cobalt is less than or equal to 0.1%, the mass percentage content of copper is less than or equal to 0.2%, and the grain size number of described nickel base superalloy silk material is more than or equal to 5 grades.Preferably, the material of described silk material is GH4145 alloy, GH4145 alloy is mainly the nickel base superalloy that carries out mutually ageing strengthening with γ ＇, it has good corrosion-resistant and antioxygenic property below at 980 ℃, there is below higher intensity at 800 ℃, there is below good resistance to relaxation property at 540 ℃, also there is good forming property and welding performance simultaneously.This alloy is mainly for the manufacture of working below and higher resistance to lax plane spring and the volute springs of desired strength at 800 ℃.Therefore, adopt the silk material of this material to manufacture the utility model spiral tight spring, it has good rebound characteristics, thereby guarantees sealing property.
In addition, in the utility model, nickel base superalloy silk material before for coiling spiral tight spring, need to carry out EDDY CURRENT to it, to guarantee the quality of a material and spiral tight spring.
Preferably, described clad 11 rolls formation by silver band, and weld mutually the two ends of described silver band, and therefore, whole silver band only has a welding joint.And in silver band, the purity of silver is more than or equal to 99.99%, and requires silver to have low-down air content.Because silver-colored hardness is less than the hardness of nichrome, therefore, clad 11 has high-ductility, thereby plays the effect of making up preferably when it is contacted with the sealing surface in middle layer 12.
The clad 11 of C type sealing ring 1 described in the utility model is made by silver band, make by GH600 band in middle layer 12, build-up layer 13 adopts GH4145 alloy to make, clad 11, middle layer 12 and build-up layer 13 all adopt home made materials to make, the C type sealing ring 1 of preparing compared to available technology adopting foreign material, production cost significantly reduces, and Chinese Nuclear Power localization process is had to important strategic importance.
In addition, temperature rate >=28 that the utility model C type sealing ring 1 can bear ℃/h.And in heating and cooling process, leakage rate is necessary≤0.1L/h; In the time that temperature, pressure are all stablized, there is not any leakage and abnormal occurrence in C type sealing ring 1, so just laminating acceptance criteria of C type sealing ring 1.The required temperature rate bearing of above-mentioned C type sealing ring 1, its leakage rate in heating and cooling excessively, the technology being well known to the skilled person.
Consult below shown in Fig. 6-Fig. 8, the concrete application of the utility model C type sealing ring 1 is described.
As shown in Figure 6, nuclear power plant reactor pressure vessel 2 comprises cylindrical shell 21 and top cover 22, wherein, cylindrical shell 21 is provided with cooling medium and imports and exports ozzle 212, and the upper end of cylindrical shell 21 is provided with shell flange 211, on top cover 22, be provided with the top cover flange 221 corresponding with shell flange 211, cylindrical shell 21 is tightly connected by shell flange 211, top cover flange 221 mutually with top cover 22, and is provided with at least one C type sealing ring 1 between shell flange 211, top cover flange 221.
Shown in Fig. 6-Fig. 8, in the present embodiment, between shell flange 211, top cover flange 221, be provided with twice C type sealing ring 1.Particularly, offer the storage tank 222 corresponding with C type sealing ring 1 on top cover flange 221, C type sealing ring 1 correspondence is placed in described storage tank 222, and is also provided with fixture 3 with fixation of C type sealing ring 1 in a side of storage tank 222.Wherein, fixture 3 comprises securing member 31 and geometrical clamp 32, geometrical clamp 32 has a fixed part 321, extend to form a clamping part 322 from one end bending of fixed part 321, therefore, geometrical clamp 32 is bending, fixed part 321 is fixed on top cover flange 221 by securing member 31 and is positioned at a side of storage tank 222, clamping part 322 is to the interior extension of storage tank 222 and press on the outer wall of C type sealing ring 1, and the first opening 111 on C type sealing ring 1, the second opening 121 is positioned at the side away from clamping part 322, also be the first opening 111, the second opening 121 is positioned at the opposite face of pressure-bearing side.Wherein, described securing member 31 is preferably trip bolt, but not as limit.When work, C type sealing ring 1 presents impaction state under bolt pretightening effect, fits tightly and plays sealing function with sealing surface; When pressure medium or/and temperature while occurring changing, is kept the stability of sealing property by compression-rebound characteristics of built-in spiral tight spring.
Due to C type sealing ring 1 of the present utility model, it comprises the clad 11 that is hollow circular ring shape, middle layer 12 and build-up layer 13, described middle layer 12 is placed in the hollow structure of described clad 11 and is close to the inwall of described clad 11, described build-up layer 13 is placed in the hollow structure in described middle layer 12 and is close to the inwall in described middle layer 12, and described clad 11, the cross section in described middle layer 12 is c-shaped structure all, wherein, be circular spiral the tight spring of described build-up layer 13 for forming by a Wire-winding that is four-prism shape, the head and the tail of described spiral tight spring weld mutually, and the outside surface of described spiral tight spring forms smooth coated face, described coated face is close to the inwall in described middle layer 12.When work, C type sealing ring 1 is impaction state under bolt pretightening effect, and itself and sealing surface fit tightly and play sealing function; Form because the also tight spring of spiral adopts the Wire-winding that is four-prism shape, therefore its radial compression-rebound characteristics has obtained further optimization, has promoted sealing property; And the smooth coated face of spiral tight spring is close to the inwall in middle layer 12, compared with adopting the spiral of cylindrical Wire-winding one-tenth the undulatory coated face of tight spring, its smooth coated face is without the gap at turn top, therefore complete gapless between its coated face and the inwall in middle layer 12, therefore load distribution is more even, thereby promotes linear sealing performance; Therefore when pressure medium or/and temperature while occurring changing, is kept the stability of sealing property, thereby guarantees the sealing property of reactor pressure vessel by compression-rebound characteristics of spiral tight spring, guarantee the safe operation of nuclear power station; And the smooth coated face of spiral tight spring, the processing technology difficulty while making middle layer 12 coated reduces greatly; And this C type sealing ring 1 can adapt to nuclear power station high temperature, high pressure and the instantaneous large temperature difference, pressure surge operating mode.
Other structures of the utility model reactor pressure vessel 2 are well known to those of ordinary skill in the art, are no longer described in detail at this.
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 (6)
1. a C type sealing ring, be applicable to reactor pressure vessel, described C type sealing ring is circular, it is characterized in that: described C type sealing ring comprises the clad that is hollow circular ring shape, middle layer and build-up layer, described middle layer is placed in the hollow structure of described clad and is close to the inwall of described clad, described build-up layer is placed in the hollow structure in described middle layer and is close to the inwall in described middle layer, and described clad, the cross section in described middle layer is c-shaped structure all, wherein, described build-up layer is circular spiral the tight spring that be forming by a Wire-winding that is four-prism shape, the head and the tail of described spiral tight spring weld mutually, and the outside surface of described spiral tight spring forms smooth coated face, described coated face is close to the inwall in described middle layer.
2. C type sealing ring as claimed in claim 1, is characterized in that: described middle layer is by the band roll-forming of a nichrome material, and the head and the tail of described band weld mutually.
3. C type sealing ring as claimed in claim 1, is characterized in that: described clad is with roll-forming by silver, and the head and the tail of described silver band weld mutually.
4. C type sealing ring as claimed in claim 1, is characterized in that: the temperature rate that described C type sealing ring can bear is more than or equal to 28 ℃/h.
5. C type sealing ring as claimed in claim 1, is characterized in that: in heating and cooling process, the slip of described C type sealing ring is less than or equal to 0.1L/h; When temperature, pressure stability, described C type sealing ring is without leakage.
6. C type sealing ring as claimed in claim 1, is characterized in that: described clad circumferentially offers the first opening along it, and described middle layer circumferentially offers the second opening along it, described the first opening corresponding with described the second opening and be communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781910.9U CN203607104U (en) | 2013-11-27 | 2013-11-27 | C-shaped sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781910.9U CN203607104U (en) | 2013-11-27 | 2013-11-27 | C-shaped sealing ring |
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| Publication Number | Publication Date |
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| CN203607104U true CN203607104U (en) | 2014-05-21 |
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| CN201320781910.9U Expired - Lifetime CN203607104U (en) | 2013-11-27 | 2013-11-27 | C-shaped sealing ring |
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| CN (1) | CN203607104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
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2013
- 2013-11-27 CN CN201320781910.9U patent/CN203607104U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
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| 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 Co.,Ltd. Patentee after: SUZHOU BAOHUA MECHANICAL TECHNOLOGY Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. 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: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: SUZHOU BAOHUA MECHANICAL TECHNOLOGY Co.,Ltd. Patentee before: CHINA GENERAL NUCLEAR POWER Corp. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |