CN115479123B - A sealing structure for a penetration piece of an irradiation device - Google Patents
A sealing structure for a penetration piece of an irradiation device Download PDFInfo
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- CN115479123B CN115479123B CN202211127403.3A CN202211127403A CN115479123B CN 115479123 B CN115479123 B CN 115479123B CN 202211127403 A CN202211127403 A CN 202211127403A CN 115479123 B CN115479123 B CN 115479123B
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- 238000007789 sealing Methods 0.000 title claims abstract description 153
- 230000035515 penetration Effects 0.000 title claims abstract description 24
- 210000004907 gland Anatomy 0.000 claims description 61
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000011160 research Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 description 63
- 238000003466 welding Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 239000011824 nuclear material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K5/00—Irradiation devices
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Gasket Seals (AREA)
Abstract
本发明公开了一种用于辐照装置贯穿件的密封结构，涉及研究堆辐照考验技术领域，它主要包括连接座和连接管，连接座具有用于贯穿件活动穿插的第一通道；连接管一端与第一通道相互连通，连接管另一端设置有密封接头；密封接头包括锁定套、连接外套以及密封套，密封套包括内外嵌套的弹性内圈组件和弹性外圈组件，弹性内圈组件和弹性外圈组件之间形成有与第一通道连通的第二通道；锁定套能够作用于弹性内圈组件和/或弹性外圈组件，以使弹性外圈组件与弹性内圈组件共同夹持密封贯穿件。该密封结构通过密封接头采用活动锁定密封的方式对贯穿件进行夹持密封，不仅密封可靠、而且密封部分拆装方便，同时具备结构小型化、操作便捷化的特点。
The present invention discloses a sealing structure for a penetration piece of an irradiation device, and relates to the technical field of research reactor irradiation test. It mainly includes a connecting seat and a connecting pipe, wherein the connecting seat has a first channel for the penetration piece to be inserted movably; one end of the connecting pipe is interconnected with the first channel, and the other end of the connecting pipe is provided with a sealing joint; the sealing joint includes a locking sleeve, a connecting sleeve and a sealing sleeve, and the sealing sleeve includes an elastic inner ring component and an elastic outer ring component nested inside and outside, and a second channel connected to the first channel is formed between the elastic inner ring component and the elastic outer ring component; the locking sleeve can act on the elastic inner ring component and/or the elastic outer ring component, so that the elastic outer ring component and the elastic inner ring component jointly clamp the sealing penetration piece. The sealing structure clamps and seals the penetration piece by means of a movable locking seal through the sealing joint, which is not only reliable in sealing, but also convenient in disassembly and assembly of the sealing part, and has the characteristics of miniaturization of structure and convenient operation.
Description
Technical Field
The invention relates to the technical field of research stack irradiation test, in particular to a sealing structure for a penetrating piece of an irradiation device.
Background
The irradiation device is used as an absolute carrier for carrying out irradiation tests on nuclear materials and nuclear fuels, and the effect of the irradiation device in irradiation technology research and irradiation tests is self-evident, and whether the irradiation technology is advanced or not is mainly judged according to whether the existing irradiation device can meet the requirements of the irradiation tests on acquisition of more and more accurate parameters. In order to obtain more irradiation parameters of nuclear materials and nuclear fuels in the irradiation test process, the process of instrumentation of an irradiation device along with a pile is promoted, and as the instrumentation degree of the irradiation device is continuously improved, penetrating pieces loaded on the irradiation device are continuously increased, and even in a severe environment, the penetrating pieces and the penetrating piece sealing device of the irradiation device also need to meet the environmental requirements of high temperature and high pressure. In order to effectively prevent the leakage of radioactive substances during the operation of a nuclear power plant, ensure the safety of the environment, the penetration piece of the irradiation device must have good sealing performance.
The sealing mode of the penetrating piece generally comprises three modes of direct welding, mechanical sealing and welding and mechanical sealing. The direct welding type welding method has the advantages that the welding requirement is high, the penetrating piece is easy to damage by the electrodeless argon arc welding, the laser welding penetration degree is insufficient, and the requirement of a high-pressure working condition is difficult to realize. The form of mechanical seal mainly relies on the assistance of supporting subassembly such as sealing washer, and supporting subassembly such as sealing washer life-span is limited under radiation environment, is difficult to satisfy long-term irradiation test demand. The combination of welding and mechanical sealing makes the sealing structure of the penetrating member complex and not compact, which not only results in great assembly and detection workload, but also is unable to be installed on the nuclear fuel and nuclear material irradiation device because of the complicated structure and large volume.
In view of the fact that the sealing of the penetrating piece on the irradiation device mainly comprises the direct welding type mechanical sealing and the welding and mechanical sealing combined mode, certain defects exist in the above modes, such as damage to the instrument in the welding process, serious abrasion of mechanical sealing parts, low reliability, incapability of being reused, large welding difficulty, complex mechanical structure, large appearance of the sealing device and the like. Therefore, a set of sealing structure which is simple and easy to operate, can ensure the sealing reliability of the penetrating piece and can conveniently carry out sealing replacement is required to be designed.
Disclosure of Invention
The invention aims to provide a sealing structure for a penetrating piece of an irradiation device, which clamps and seals the penetrating piece in a movable locking sealing mode through a sealing joint, is reliable in sealing, convenient to assemble and disassemble in a sealing part, and has the characteristics of miniaturization in structure and convenience in operation.
Embodiments of the present invention are implemented as follows:
The sealing structure for the penetrating piece of the irradiation device comprises a connecting seat and a connecting pipe, wherein the connecting seat is provided with a connecting part connected with the irradiation device, the connecting seat is provided with a first channel used for movably penetrating the penetrating piece, one end of the connecting pipe is connected with the first channel and communicated with the first channel so that the penetrating piece can penetrate into the first channel, the other end of the connecting pipe is provided with a sealing joint, the sealing joint comprises a locking sleeve, a connecting sleeve and a sealing sleeve arranged in an inner hole of the connecting sleeve, the sealing sleeve comprises an elastic inner ring component and an elastic outer ring component which are nested inside and outside, at least one group of second channels used for sealing and clamping the penetrating piece are formed between the elastic inner ring component and the elastic outer ring component, the second channel is communicated with the first channel, the inner hole of the connecting sleeve comprises a conical section, the elastic outer ring component and the conical section form taper fit, and the locking sleeve can act on the elastic inner ring component and/or the elastic outer ring component so that the elastic outer ring component and the elastic inner ring component jointly clamp the sealing penetrating piece after being extruded by the conical section.
In a possible implementation manner, the elastic inner ring assembly comprises a sealing gasket inner ring and a shielding gasket inner ring, the elastic outer ring assembly comprises a sealing gasket outer ring and a shielding gasket outer ring, the sealing gasket inner ring is sleeved in an inner hole of the sealing gasket outer ring, a channel which is used as at least part of a second channel is formed between the sealing gasket inner ring and the sealing gasket outer ring, the shielding gasket inner ring is sleeved in an inner hole of the shielding gasket outer ring, a channel which is used as the other part of the second channel is formed between the shielding gasket inner ring and the shielding gasket outer ring, the shielding gasket outer ring is positioned on one side, close to the first channel, of the sealing gasket outer ring, the shielding gasket outer ring and the sealing gasket outer ring are elastic, the shielding gasket outer ring and the sealing gasket outer ring form taper fit with the conical section, and the locking sleeve is used for acting on the sealing gasket inner ring and/or the sealing gasket outer ring.
In a possible implementation manner, the inner shielding gasket ring and the inner sealing gasket ring are elastic, the inner hole wall of the outer shielding gasket ring is provided with first grooves distributed along the axial direction, the outer ring wall of the inner shielding gasket ring is provided with second grooves distributed along the axial direction, the first grooves and the second grooves are spliced with each other to form channels serving as other parts of the second channels, the inner hole wall of the outer sealing gasket ring is provided with third grooves distributed along the axial direction, the outer ring wall of the inner sealing gasket ring is provided with fourth grooves distributed along the axial direction, and the third grooves and the fourth grooves are spliced with each other to form channels serving as at least parts of the second channels.
In a possible embodiment, the number of second channels is at least three.
In a possible implementation manner, the shielding pad outer ring and the shielding pad inner ring are made of silicon rubber, flexible graphite and carbonized fiber subjected to in-pile irradiation.
In a possible embodiment, the taper of the tapered section ranges from 10 ° to 20 °.
In a possible embodiment, the locking sleeve comprises a locking nut and a gland assembly, the locking nut and the end of the connecting sleeve far away from the first channel are mutually matched through threads, the gland assembly is arranged in an inner hole of the locking nut, the gland assembly is provided with a third channel which is used for communicating with the second channel, and when the locking nut is screwed in relative to the connecting sleeve, the gland assembly can be driven to act on the elastic inner ring assembly and/or the elastic outer ring assembly.
In a possible embodiment, the gland assembly comprises a gland inner ring and a gland outer ring nested inside and outside, a third channel is formed between the gland inner ring and the gland outer ring, and the lock nut is provided with an action part which is mutually contacted with the gland outer ring so that at least one of the gland outer ring and the gland inner ring acts on the elastic inner ring assembly and/or the elastic outer ring assembly.
In a possible embodiment, the gland outer ring is provided with a positioning lug, and the end of the connecting sleeve is provided with a positioning notch for being in clamping fit with the connecting lug.
In a possible embodiment, the gland outer ring comprises a large diameter section and a small diameter section which are coaxially formed, the large diameter section is located on one side of the small diameter section away from the first channel, the diameter of the large diameter section is larger than that of the end part of the connecting sleeve, and the diameter of the small diameter section is smaller than that of the end part of the connecting sleeve, so that the small diameter section can smoothly enter the inner hole of the connecting sleeve.
The embodiment of the invention has the beneficial effects that:
According to the sealing structure for the penetrating piece of the irradiation device, provided by the embodiment of the invention, the connecting seat and the connecting pipe are arranged, so that the penetrating piece can be directly connected with the irradiation device, and the penetrating piece can conveniently walk along the connecting seat and the connecting pipe. Simultaneously through setting up sealed joint, sealed joint including can carry out the elasticity inner circle subassembly of centre gripping to the penetration piece with elasticity outer lane subassembly can make elasticity outer lane subassembly and elasticity inner circle subassembly be close to each other and carry out sealed centre gripping to the penetration piece under the restriction of locking cover and connection overcoat, characteristics reliable, easy operation have been satisfied in this kind of mode, whole seal structure can reach small-size compactness simultaneously, easy dismouting's advantage, can not only cause the harm to the instrument in three kinds of sealing methods at present, can reuse, and simple structure is relatively moreover, also conveniently carries out the dismouting change operation of seal cover.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a seal structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a sealing joint according to an embodiment of the present invention;
FIG. 3 is a schematic view of a connecting jacket according to an embodiment of the present invention;
Fig. 4 is a schematic structural view of a gasket outer ring according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of an inner ring of a gasket according to an embodiment of the present invention;
Fig. 6 is a schematic structural diagram of a gland assembly according to an embodiment of the present invention.
The icons are 1-connecting seat, 2-connecting pipe, 3-sealing joint, 11-base, 12-mouse, 31-locking sleeve, 32-connecting sleeve, 33-sealing sleeve, 311-locking nut, 312-gland outer ring, 313-gland inner ring, 314-third channel, 315-locating lug, 321-conical section, 322-locating notch, 331-sealing pad outer ring, 332-sealing pad inner ring, 333-shielding pad outer ring, 334-shielding pad inner ring, 335-third groove and 336-fourth groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "parallel," "perpendicular," and the like, do not denote that the components are required to be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel than "perpendicular" and does not mean that the structures must be perfectly parallel, but may be slightly tilted.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected, or may be indirectly connected through an intermediate medium, or may be in communication with the inside of two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1, the sealing structure for a penetrating member of an irradiation device provided in this embodiment mainly includes a connection seat 1 and a connection pipe 2, wherein the connection seat 1 has a connection portion connected with the irradiation device, i.e. the connection portion is used for connection with the irradiation device, and the connection manner is mainly detachable fixed connection or welded fixed connection, and is selected according to the needs of specific scenes. The connecting seat 1 is provided with a first channel for movably inserting the penetrating member, namely, the first channel is used as an inserting channel of the penetrating member, so that the penetrating member is convenient to wire. In this embodiment, the connecting seat 1 includes a base 11 and a mouse 12 coaxially arranged, the base 11 is used for welding with a flange of an irradiation device, a penetrating member (such as a wire) of the irradiation device is led into an inner hole of the base 11 from the flange, the mouse 12 is detachably located in the inner hole of the base 11, and all mouse holes on the mouse 12 are communicated with the inner hole of the base 11, so as to jointly form the first channel, in different embodiments, the number of the mouse holes of the mouse 12 is set according to different needs, for example, three groups of mouse holes (an air inlet hole is formed in the middle of the mouse, and the three groups of mouse holes are distributed around the circumference of the air hole) are arranged, so that more penetrating members can be used for sealing the wiring conveniently.
One end of the connecting pipe 2 is connected with the first channel and communicated with the first channel, so that penetrating members can penetrate into the first channel, the penetrating members can be in sealing connection with the mouse holes of the mouse dragon 12, the number of the connecting pipes 2 is consistent with the number of the mouse holes, and the connecting pipes can be adjusted according to actual scene requirements, so that different penetrating members penetrate into different connecting pipes 2 respectively. The connecting pipe 2 can be in the form of a straight pipe or a bent pipe, and is mainly used for providing a wiring channel of a penetrating piece, the other end of the connecting pipe 2 is provided with a sealing joint 3, and the sealing joint 3 is mainly used for realizing sealing connection after wiring of the penetrating piece, and meanwhile, the connecting pipe possibly has the advantages of convenience in operation and reliability in sealing.
Specifically, referring to fig. 2, the sealing joint 3 includes a locking sleeve 31, a connecting sleeve 32, and a sealing sleeve 33 disposed in an inner hole of the connecting sleeve 32, that is, the sealing joint 3 is mainly composed of the three parts, wherein the connecting sleeve 32 is used for providing a mounting and restraining base, the sealing sleeve 33 is used for providing a structural base for clamping and sealing a penetrating member, and the locking sleeve 31 is used for providing a structural base for adjusting force. Further, the sealing sleeve 33 includes an inner and an outer nested elastic inner ring assembly and an outer elastic ring assembly, at least one set of second channels for sealing and clamping the penetrating members are formed between the inner elastic ring assembly and the outer elastic ring assembly, the second channels are communicated with the first channels, that is, the sealing sleeve 33 is formed by two parts which are nested inside and outside, that is, a gap between the inner elastic ring assembly and the outer elastic ring assembly and movable with each other, and a second channel communicated with the first channels is formed in the gap, so that the penetrating members can conveniently run from the connecting pipe 2 into the second channels, when the connecting pipe 2 has a plurality of connecting pipes, the number of the second channels is matched with the second channels, for example, in some embodiments, the number of the second channels is at least three, so that the sealing connection of more penetrating members is facilitated.
In order to enable the elastic inner ring assembly and the elastic outer ring assembly to be mutually close to each other and even extrude to realize the change of the second channel, so as to achieve the purpose of clamping the through sealing penetrating piece, the inner hole of the connecting sleeve 32 comprises a conical section 321, the elastic outer ring assembly and the conical section 321 form taper fit, the taper fit mainly means that the outer wall of the elastic outer ring assembly forms a conical surface matched with the inner hole wall of the conical section 321, and therefore the purpose that the outer wall of the elastic outer ring assembly is extruded can be achieved by utilizing the self-locking property of the conical surface, namely, along with the shrinkage of the conical surface, the outer wall of the elastic outer ring assembly is extruded more greatly. In addition, the locking sleeve 31 can act on the elastic inner ring assembly and/or the elastic outer ring assembly, so that the elastic outer ring assembly and the elastic inner ring assembly clamp the sealing penetration piece together after being extruded by the conical section 321, and the purpose of sealing connection of the penetration piece is achieved.
Through above technical scheme, run through the piece and advance the walking line from first passageway, connecting pipe 2 hole, second passageway in proper order to form the sealing connection of stable centre gripping between elasticity inner circle subassembly and elasticity outer lane subassembly, this kind of mode not only conveniently runs through the reliable seal of piece, and the centre gripping mode is simple easy to operate moreover, can conveniently carry out the change of seal cover 33 at any time, and holistic compact structure is brief simultaneously, can satisfy the sealed centre gripping that can also realize more run through the piece of the prerequisite of miniaturized design. In general, the sealing structure can replace the existing penetrating piece sealing structure with large volume, complex structure and higher processing requirement, has better sealing performance and stronger adaptability, can be flexibly assembled and used according to test requirements, and can not only seal a plurality of penetrating pieces, but also seal penetrating pieces with different diameters.
The elastic inner ring component and the elastic outer ring component not only need to have certain elastic deformation to realize sealing clamping of the actions, but also need to ensure the shielding property of irradiation, thereby ensuring the safety and reliability of the test. In this embodiment, the elastic inner ring assembly and the elastic outer ring assembly are mainly composed of two parts, namely a sealing part and a shielding part, referring to fig. 2 and 3, the elastic inner ring assembly includes a sealing gasket inner ring 332 and a shielding gasket inner ring 334, the elastic outer ring assembly includes a sealing gasket outer ring 331 and a shielding gasket outer ring 333, the sealing gasket inner ring 332 is sleeved in an inner hole of the sealing gasket outer ring 331, a channel serving as at least part of a second channel is formed between the sealing gasket inner ring 332 and the sealing gasket outer ring 331, that is, a channel formed between the sealing gasket inner ring 332 and the sealing gasket outer ring 331 serves as a part of the second channel, and the rest is formed by the shielding part. Specifically, the shielding pad inner ring 334 is sleeved in the inner hole of the shielding pad outer ring 333, and a channel serving as another part of the second channel is formed between the shielding pad inner ring 334 and the shielding pad outer ring 333.
The shielding gasket outer ring 333 is located at a side of the gasket outer ring 331 close to the first channel, i.e. a side close to the irradiation device, so as to realize shielding of radioactive substances, and the locking sleeve 31 is used for acting on the gasket inner ring 332 and/or the gasket outer ring 331, so as to facilitate the realization of the subsequent taper extrusion action. The shielding gasket outer ring 333 and the sealing gasket outer ring 331 are elastic, and the shielding gasket outer ring 333 and the sealing gasket outer ring 331 are in taper fit with the tapered section 321, so as to achieve the extrusion sealing function. It can be appreciated that the shielding gasket outer ring 333 and the sealing gasket outer ring 331 together form a cone with an inner hole, and the cone can form a taper fit with the cone section 321, so that the sealing gasket outer ring 333 and the shielding gasket inner ring 334 can seal and clamp the penetrating member while sealing the penetrating member, and the sealing gasket outer ring 331 and the sealing gasket inner ring 332 can also seal and clamp the penetrating member, thereby improving the reliability of sealing and clamping, and especially meeting higher requirements on sealing precision under irradiation environment. In some embodiments, the vertical height of the tapered section 321 is smaller than the sum of the vertical heights of the shielding gasket outer ring 333 and the sealing gasket outer ring 331, so that the radial extrusion force of the tapered surface of the tapered section 321 can effectively act, the taper angle of the tapered section 321 is in the range of 10 ° -20 °, the purpose is that the taper angle needs to be appropriate, when the taper angle is too large, the radial component force is too large, the friction force between the sealing gasket 33 and the tapered surface is increased, the taper angle is too small, the radial component force is too small, and the sealing effect is poor.
In order to improve the clamping adaptability between the second channel and the penetrating member, referring to fig. 4 and 5, the inner ring 334 of the shielding pad and the inner ring 332 of the sealing pad also have elasticity, the inner wall of the outer ring 334 of the shielding pad is provided with first grooves distributed along the axial direction, the outer wall of the inner ring 334 of the shielding pad is provided with second grooves distributed along the axial direction, and one first groove and one second groove are spliced with each other to form a channel serving as another part of the second channel, that is, a channel formed by splicing the first groove and the second groove serves as another part of the second channel, wherein the first groove and the second groove serve as a group, and the number of the first groove and the second groove is consistent with that of the second channel. Similarly, the inner hole wall of the outer ring 331 is provided with third grooves 335 distributed along the axial direction, the outer ring wall of the inner ring 332 is provided with fourth grooves 336 distributed along the axial direction, and one third groove 335 and one fourth groove 336 are spliced with each other to form a channel which is at least a part of the second channel. It should be noted that the cross-sectional shapes and the sizes of the first groove, the second groove, the third groove 335 and the fourth groove 336 are not necessarily identical, and may be selected according to the actual scene requirement, for example, the cross-sectional shape of the groove is semicircular or semi-elliptical, so that the cross-sectional shape of the spliced channel is circular or elliptical, and a good fit can be formed between the spliced channel and the penetrating member, thereby achieving a better clamping and sealing effect.
In addition, in order to further ensure the clamping suitability of the second channel and the penetrating member, the shielding pad outer ring 333 and the shielding pad inner ring 334 are made of silicone rubber, flexible graphite and carbon fiber (the above three materials need to be irradiated in the reactor and are verified to be qualified, and all the materials need to be irradiated in the nuclear reaction test reactor, and the radiation resistance and neutron shielding performance of the materials are verified), so that the shielding pad outer ring 333 and the shielding pad inner ring 334 can bear radiation dose greater than 0.6Gy, and the maximum plastic deformation amount is less than 30%, so that 90% of gamma and alpha rays can be shielded. Furthermore, the outer ring 331 and the inner ring 332 may be made of the above materials for improving safety.
In this embodiment, for better achieving the purpose of conveniently manipulating the locking sleeve 31 to act on the sealing sleeve 33, please refer to fig. 6, the locking sleeve 31 includes a locking nut 311 and a gland assembly, the locking nut 311 is matched with the end portion of the connecting sleeve 32 far away from the first channel through threads, that is, the connecting sleeve 32 mainly includes a cylindrical section, a conical section (for forming the conical section 321) and a cylindrical section which are sequentially connected, the cylindrical section near the first channel is matched with the connecting tube 2 in an inserting manner, and the end portion of the cylindrical section far away from the first channel is threaded for being matched with the locking nut 311. The gland assembly is disposed in the inner hole of the lock nut 311, and the gland assembly has a third channel 314 for communicating with the second channel, when the lock nut 311 is screwed into the connecting sleeve 32, the gland assembly can be driven to act on the elastic inner ring assembly and/or the elastic outer ring assembly, so as to realize the clamping and sealing of the penetrating member. Through the above technical scheme, on one hand, third channels (the number of the third channels is equal to that of the second channels) which are convenient for the wiring of the penetrating piece are formed, and on the other hand, the penetrating piece can be clamped and sealed only by twisting or rotating the locking nut 311, so that better operation convenience is achieved. The locking nut 311 is transmitted to the elastic inner ring assembly and/or the elastic outer ring assembly (specifically, the acting sealing gasket outer ring 331 and/or the sealing gasket inner ring 332) to press the corresponding groove radially inwards in the downward moving process, so that the hole wall forming the channel is tightly attached to the penetrating piece, the sealing purpose is achieved, the larger the pretightening force is, the larger the extrusion force to the penetrating piece is, and the better the sealing effect is.
In order to realize that the gland assembly also has a certain clamping and sealing function on the penetrating member, the gland assembly comprises an inner gland ring 313 and an outer gland ring 312 which are nested inside and outside, a third channel 314 is formed between the inner gland ring 313 and the outer gland ring 312, and the forming mode of the third channel is that two grooves are mutually spliced, for example, the same forming mode of the second channel is adopted (refer to the description above and are not repeated here). The lock nut 311 has an action portion contacting with the gland outer ring 312, that is, a cap head of the lock nut 311 has a reduced diameter cover plate capable of contacting and acting with the gland outer ring 312 such that at least one of the gland outer ring 312 and the gland inner ring 313 acts on the elastic inner ring assembly and/or the elastic outer ring assembly. Of course, at least one of gland outer ring 312 and gland inner ring 313 herein means that the resilient inner ring assembly is in direct contact and/or that the resilient outer ring assembly may be only gland outer ring 312 or gland inner ring 313, or that gland outer ring 312 and gland inner ring 313 co-operate.
In order to avoid the rotation of the gland outer ring 312 along with the locking nut 311, the gland outer ring 312 is provided with a positioning lug 315, and the end part of the connecting sleeve 32 is provided with a positioning notch 322 for being in clamping fit with the connecting lug 315, so that the connecting stability of the gland outer ring 312 is ensured by the mutual clamping connection of the connecting lug 315 and the positioning notch 322, and the gland outer ring 312 cannot rotate along with the locking nut 311. In addition, the gland outer ring 312 includes a large diameter section and a small diameter section, which are coaxially formed, the large diameter section is located on a side of the small diameter section away from the first channel, the diameter of the large diameter section is larger than the diameter of the end of the connecting sleeve 32, and the diameter of the small diameter section is smaller than the diameter of the end of the connecting sleeve 32, so that the small diameter section can smoothly enter the inner hole of the connecting sleeve, and thus smoothly act with the gasket outer ring 331 and/or the gasket inner ring 332. More specifically, the inner holes of the large-diameter section and the small-diameter section are mutually combined into a stepped hole, the small-diameter hole realizes the clamping sealing of the penetrating piece, and the large-diameter hole provides space to facilitate the disassembly operation or other operations. Through above technical scheme, adopt inside and outside gland, inside and outside packing ring and the structural style of inside and outside shielding pad, can satisfy at any time the change of sealing washer, shielding ring, also satisfy the forward and reverse installation requirement of penetrating piece simultaneously, its practicality is wider.
The embodiment also provides some mounting processes of the sealing structure, namely for the irradiation device (the flange material is aluminum alloy, the connecting seat 1 material is stainless steel) of the peripheral pore canal, after the irradiation device is assembled, a compensation lead (penetrating piece) of the sensor is led out from the flange to sequentially pass through a first channel, a connecting pipe 2 and a second channel of the connecting seat 1. Firstly, a connecting seat 1 (a base 11 and/or a murinone 12) is welded to a flange of an irradiation device, two ends of a connecting pipe 2 are respectively welded with the murinone 12 and a connecting outer sleeve 32, then, penetrating members sequentially penetrate through a shielding pad outer ring 333 and a sealing pad outer ring 331, a sealing pad inner ring 332 and a shielding pad inner ring 334 are respectively arranged in the sealing pad outer ring 331 and the shielding pad outer ring 333, the penetrating members are placed in a second channel, then, a gland inner ring 313 is installed, the penetrating members penetrate through a third channel of the gland outer ring 312 and the gland inner ring 313, the gland outer ring 312 is installed in the connecting outer sleeve 32, and finally, locking nuts 311 are used for fixing and applying pretightening force to complete sealing of penetrating members of the irradiation device. When more than 3 penetrating members with different diameters are led out from the irradiation device, the gland outer ring 312, the gland inner ring 313, the gasket outer ring 331, the gasket inner ring 332, the shielding gasket outer ring 333 and the shielding gasket inner ring 334 need to be customized according to the sizes of the penetrating members, and through holes on the penetrating members need to be matched with the diameters of the penetrating members.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and that descriptions of well-known components and processing techniques and procedures are omitted so as not to unnecessarily limit the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127403.3A CN115479123B (en) | 2022-09-16 | 2022-09-16 | A sealing structure for a penetration piece of an irradiation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211127403.3A CN115479123B (en) | 2022-09-16 | 2022-09-16 | A sealing structure for a penetration piece of an irradiation device |
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| CN115479123A CN115479123A (en) | 2022-12-16 |
| CN115479123B true CN115479123B (en) | 2025-01-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103733104A (en) * | 2011-07-29 | 2014-04-16 | 康宁光缆系统有限责任公司 | Fiber optic cable seal and/or strain relief members |
| CN113257445A (en) * | 2021-07-01 | 2021-08-13 | 中国核动力研究设计院 | System for instantaneously measuring neutron flux under high-temperature and high-pressure working condition |
| CN113552681A (en) * | 2021-08-27 | 2021-10-26 | 国网浙江省电力有限公司信息通信分公司 | An optical cable splice box and its optical fiber unit sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB285303A (en) * | 1927-06-23 | 1928-02-16 | Johannes Wilhelm Hofmann | Improvements in or relating to couplings for electric conductors |
| FR2602570B1 (en) * | 1986-08-11 | 1988-12-02 | Sgn Soc Gen Tech Nouvelle | DEVICE FOR MAKING A SEALED CONNECTION AND CONNECTION METHOD USING THE SAME |
| JP2000180679A (en) * | 1998-12-10 | 2000-06-30 | Hitachi Cable Ltd | Tape slot type optical fiber cable |
| CN207924215U (en) * | 2018-03-07 | 2018-09-28 | 浙江超前通信科技股份有限公司 | A kind of submarine optical fiber cable locking structural device |
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2022
- 2022-09-16 CN CN202211127403.3A patent/CN115479123B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103733104A (en) * | 2011-07-29 | 2014-04-16 | 康宁光缆系统有限责任公司 | Fiber optic cable seal and/or strain relief members |
| CN113257445A (en) * | 2021-07-01 | 2021-08-13 | 中国核动力研究设计院 | System for instantaneously measuring neutron flux under high-temperature and high-pressure working condition |
| CN113552681A (en) * | 2021-08-27 | 2021-10-26 | 国网浙江省电力有限公司信息通信分公司 | An optical cable splice box and its optical fiber unit sealing structure |
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