CN210073339U - Electric penetration device and system for hot chamber - Google Patents

Abstract

The utility model discloses an electric penetration device and system for a hot chamber, which comprises a hot chamber outer side junction box, a conductor fixing device, a cylinder body, an end plate and a hot chamber inner side junction box which are connected in sequence; the hot chamber outer side connection box is provided with a hot chamber outer side connector, and the hot chamber inner side connection box is provided with a hot chamber inner side connector; a shielding component provided with a through hole or a groove for the conductor component or the extension lead of the conductor component to pass through is arranged in the cylinder; the conductor assembly is connected to the conductor fixing device in a sealing mode, one end or one extension lead of the conductor assembly extends out of the conductor fixing device to be connected with the hot chamber outer side connector, and the other end or the other extension lead of the conductor assembly penetrates through the shielding assembly to be connected with the hot chamber inner side connector. The utility model discloses a device integrated level is high, compact structure, excellent performance, overhaul and maintain the convenience, possess good radiation protection function, good sealed and electrical properties and anti-seismic performance, can guarantee good mechanical integrity and electrical integrity.

Description

Electric penetration device and system for hot chamber

Technical Field

The utility model relates to an electricity in nuclear field runs through technique, concretely relates to electricity for hot chamber runs through device and system.

Background

In the field of nuclear technology, a hot cell is an enclosed space used for high activity testing and operations, which is relatively isolated from the surrounding environment by a hot cell housing and shielding walls. At present, a cable pipe of a hot chamber cable directly penetrates through a hot chamber shell and a shielding wall body, and is locally sealed in a mode of sealing a pipe orifice by using sealing filler. The cable penetrating through the shielding wall of the hot chamber has the following disadvantages:

(1) electrical and sealing performance is unreliable. The sealing filler and the cable are easy to age, the sealing effect is poor, and the electrical and sealing performance can not be ensured for a long time under severe environmental conditions.

(2) Cable replacement is difficult. The cable is laid by adopting a bent pipe pre-embedding mode generally, and once the cable breaks down, the cable is difficult to maintain and replace.

(3) The sealing performance of the cable penetration part cannot be detected, and if the hot chamber cannot normally establish the running state of negative pressure, the difficulty in checking leakage points is high.

(4) The connection and replacement of the cables inside the hot chamber are performed without remote operation by a robot at the outside of the hot chamber.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric device that runs through for hot room, the electric and the problem of sealing performance unreliable, the cable replacement difficulty that adopt the cable duct directly to run through hot room casing and shielding wall body to bring among the solution prior art guarantees the reliable electrical connection of the interior outer cable of hot room, can also effectively prevent the leakage of radioactive substance. The utility model also provides an electric system of running through for hot chamber and mounting method thereof.

The utility model discloses a following technical scheme realizes:

an electric penetration device for a hot chamber comprises a conductor assembly, a cylinder assembly, a hot chamber outer side junction box and a hot chamber inner side junction box; the cylinder assembly comprises a cylinder, a conductor fixing device and an end plate, wherein one end of the cylinder is connected with the conductor fixing device, and the other end of the cylinder is connected with the end plate; the hot chamber outer side junction box is connected to the conductor fixing device and is connected to the different side of the conductor fixing device with the cylinder; the junction box at the inner side of the hot chamber is connected to the end plate and is connected to different sides of the end plate together with the cylinder; a hot chamber outer side connector is mounted on the hot chamber outer side junction box, and a hot chamber inner side connector is mounted on the hot chamber inner side junction box; a shielding component for blocking rays is further arranged in the cylinder body; the shielding assembly is provided with a through hole or a groove for the extension lead of the conductor assembly to pass through; the conductor assembly is hermetically connected to the conductor fixing device, and one end of the conductor assembly or an extension lead at one end of the conductor assembly extends out of the conductor fixing device to be connected with the external connector of the hot chamber; the other end of the conductor assembly or an extension wire at the other end passes through the shielding assembly to be connected with the hot chamber inner side connector. In the technical scheme, the conductor fixing device can adopt an end plate flange, a plurality of through holes are formed in the end plate flange, and the conductor assembly penetrates through the through holes in the end plate flange; the conductor assembly is connected to the conductor fixing device in a sealing mode, and the conductor assembly can be fixed to the end plate flange through the metal sealing clamping sleeve assembly. And the extension wires of the conductor assembly are respectively welded or connected in a compression joint mode with the connectors on the outer side and the inner side of the heat chamber, the connected connectors are installed on the junction boxes on the outer side and the inner side of the heat chamber, and the reliable electrical connection with the external cables on the inner side and the outer side of the heat chamber is realized through the electrical connection of the connectors. Still be provided with the shielding subassembly that is used for blockking the ray in the barrel, can effectively guarantee being in the radiation protection environment of safety of hot chamber outside staff.

As a further improvement of the utility model, the quantity of shielding subassembly is one or more, still be provided with supporting component in the barrel, supporting component includes the bracing piece, the bracing piece passes all shielding subassemblies and links to each other with conductor fixing device, and all shielding subassemblies carry out axial fixity through supporting component.

Preferably, the projections of the through holes and the grooves of all the shielding assemblies on an H surface are not coincident, and the H surface is parallel to the radial direction of the cylinder. In the scheme, the shielding component can adopt a lead shielding block; the supporting component can adopt bracing piece and retaining ring, therefore the core of this scheme is that the body that runs through the device at electricity is provided with the plumbous shielding piece that radiation protection used to the inboard extending direction of buried sleeve pipe in advance to carry out fixed connection through bracing piece, retaining ring etc. in electric running through device barrel subassembly, conductor assembly's extension conductor curves in proper order passes a plurality of plumbous shielding pieces, and run through the direct hot indoor side of whole barrel subassembly, guarantee that electric running through device body has good radiation shielding performance.

Further, a sealing assembly is further arranged between the conductor assembly and the conductor fixing device and used for sealing a gap between the conductor assembly and the conductor fixing device. In this scheme, the conductor fixing device of barrel subassembly is last to have through-going hole way promptly the through-hole, and the conductor subassembly runs through the through-hole on the transition flange to fix the conductor subassembly through seal assembly and realize the reliable sealed of conductor subassembly and penetration piece body on the transition flange.

The electric penetration system for the hot chamber comprises an embedded sleeve arranged in a wall body, a pre-welding flange arranged on the wall body and an electric penetration device penetrating through the embedded sleeve, wherein the electric penetration device is any one of the technical schemes, a conductor fixing device of the electric penetration device is connected with the pre-welding flange, a sealing ring is arranged between the conductor fixing device and the pre-welding flange, and the sealing ring is used for sealing a gap between the end face of the pre-welding flange and the end face of the conductor fixing device.

Preferably, the embedded sleeve and the cylinder are both in a stepped cylindrical structure, and the cylinder is matched with the embedded sleeve, so that the inner diameter of the embedded sleeve at the position where the outer diameter of the cylinder changes correspondingly changes. In the scheme, the barrel assembly of the penetrating device adopts a step-shaped reducing design, the embedded sleeve is also designed into a step-shaped structure, the shape of the embedded sleeve is matched with that of the barrel assembly, and rays can be effectively prevented from being directly irradiated to the outside of the hot room from a gap between the barrel assembly of the electric penetrating device and the embedded sleeve.

Further, a sealing mechanism is further arranged between the outer wall of one side, close to the hot chamber, of the cylinder body and the embedded sleeve, and the sealing mechanism is a sealing ring or a sealing gasket. In this scheme, be located the barrel subassembly externally mounted of hot indoor side at electric device that runs through and have a sealed pad or sealed pad, can seal the gap between electric device barrel subassembly that runs through and the buried sleeve pipe in advance, prevent among dust, radioactive aerosol, water etc. get into buried sleeve pipe in advance, pollute the surface of electric device that runs through, facilitate for subsequent operation maintenance, the retirement of device.

Further, a first leakage detecting hole and a second leakage detecting hole are formed in the conductor fixing device; the first leak detection hole is used for detecting the sealing performance between the conductor assembly and the conductor fixing device, and the second leak detection hole is used for detecting the sealing performance between the conductor fixing device and the prewelding flange. In this technical scheme, adopt flange bolt installation between electric penetration device and the buried sleeve pipe in advance, adopt the sealing washer sealed between electric penetration device and the buried sleeve pipe in advance, the design has 2 sealed detection interfaces on the end plate flange, detects electric penetration device body, the electric sealing performance who runs through device installation face respectively, realizes sealed monitoring.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to a hot chamber is with electric through device adopts integral type structural design, and electric through device's overall structure is compact, the integrated level is high, and its electrical function, mechanical function and radiation protection function are highly integrated. The whole electrical penetration device is convenient to install, detect and maintain on site.

2. The utility model discloses an electric penetration device for hot chamber supports the conductor assembly of various specification types, has stronger commonality and expansibility.

3. The utility model discloses an electric penetration device for hot chamber internally arranged polylith shielding lead block, conductor assembly's extension wire curve is through the dislocation trompil (or fluting) on the different shielding lead blocks. Effectively ensures that the electric penetration device body has good radiation shielding performance.

4. The utility model discloses a pre-buried sleeve pipe of hot room electricity system of running through and the barrel subassembly of electric through device all adopt the reducing design of echelonment, can prevent effectively that the ray from penetrating directly to the hot room outside from the gap between the barrel of electric through device and the pre-buried sleeve pipe, guarantee that electric through still has good shielding performance between device and the pre-buried sleeve pipe interface.

5. The utility model discloses an electric device that runs through adopts the special connector to be connected with outside cable, but hot indoor side connector can adopt remote operation's connector, can carry out the connection and the change operation of cable through the manipulator. The mode is very convenient for the maintenance and repair work after the operation.

6. The utility model discloses an electric seal that runs through between device and the hot chamber body adopts two pass O shape (or C type) rubber (or metal) sealing washer sealed, adopts sealed redundant design, guarantees reliable sealing performance.

7. The utility model discloses an electric sealed detectable who runs through between device body, electric running through device and the hot chamber wall body, installation and operation period can regularly detect. The sealing performance of the electric penetration device is effectively ensured.

8. The utility model discloses an adopt cutting ferrule seal assembly to realize conductor assembly at the fixed and two pass metal seal of end plate flange department, conductor assembly can dismantle, removable, can overhaul, and is sealed effectual.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the outside of the hot cell;

fig. 3 is a cross-sectional view taken along line C-C of fig. 2.

Reference numbers and corresponding part names:

1. an outdoor-side connector; 2. a junction box outside the hot chamber; 3. a conductor assembly; 4. a seal assembly; 5. a conductor fixing device; 6. a lifting eye screw; 7. a seal ring; 8. a support bar; 9. a retainer ring; 10. a shielding assembly; 11. a sealing mechanism; 12. a junction box inside the hot chamber; 13. a hot chamber inner side connector; 14. pre-burying a sleeve; 15. a cavity; 16. an end plate; 17. pre-welding a flange; 18. a barrel; 19. a first leak detection hole; 20. a second leak detection hole.

Detailed Description

In the field of nuclear technology, hot-chamber cables in the prior art usually employ a cable tube to directly penetrate through a hot-chamber housing and a shielding wall, and are locally sealed by sealing filler to seal a pipe orifice. The mode that the cable penetrates through the shielding wall of the hot chamber has the following defects: (1) the electrical and sealing performance is unreliable, the sealing filler and the cable are easy to age, the sealing effect is poor, and the electrical and sealing performance cannot be ensured for a long time under severe environmental conditions; (2) cables are difficult to replace, generally the cables are laid in a bent pipe pre-embedding mode, and once the cables break down, the cables are difficult to maintain and replace; (3) the sealing performance of the cable penetration part cannot be detected, and if the operation state of negative pressure cannot be normally established in the hot chamber, the difficulty in checking leakage points is high; (4) the connection and replacement of the cables inside the hot chamber are performed without remote operation by a robot at the outside of the hot chamber.

In fact, the electrical penetration device is used as a passage for various cables to penetrate through the pressure boundary of radioactive operation spaces such as hot chamber walls, glove boxes and the like, and needs to meet related electrical performance requirements and ensure reliable sealing performance, so that the electrical continuity and the integrity of the pressure boundary can be maintained even under severe working conditions such as high temperature, high pressure, high humidity, high radiation, high corrosion and the like and under limit conditions such as earthquake accidents and the like, and radioactive substances are prevented from leaking; it is further desirable to provide for remote operation of the hot cell for installation and removal of the electrical feedthrough and the external cable assembly.

In order to solve the above-mentioned unreliable problem of electric and sealing performance among the prior art to and realize above-mentioned electric partial function requirement that runs through the device at least, the utility model provides an electric device, system and installation method that run through for hot chamber. The product can not only ensure various electrical, mechanical, sealing and radiation protection functions of the equipment under the conditions of high temperature, high humidity, high pressure, high irradiation and chemical corrosion, but also facilitate on-site installation, detection and maintenance and replacement after operation. Furthermore, a special connector is selected, the device can also have a remote operation function, and the device can be remotely operated outside the hot chamber through a manipulator, so that the connection and replacement operation of the cable assembly in the hot chamber and the electric penetration device can be realized.

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present invention.

[ example 1 ]

The electric penetration device for the hot chamber in the embodiment is special electric equipment for allowing cables such as power cables, instrument control cables, communication cables and the like to penetrate through a hot chamber shell and a shielding wall body, and the equipment has good pressure bearing performance, ageing resistance, irradiation resistance and excellent sealing performance, can ensure reliable electric connection of the cables inside and outside the hot chamber, and can effectively prevent radioactive substances from leaking. Furthermore, when the connector which can be remotely controlled in the prior art is selected, the manipulator can be used for remotely plugging and unplugging the connector, integrally replacing cables and equipment in the radioactive space in the hot chamber, and the safety of operators is guaranteed.

As shown in fig. 1 to 3, an electrical penetration system for a hot chamber includes a pre-cast sleeve 14 disposed in a wall 15, a pre-welded flange 17 disposed on the wall 15, and an electrical penetration device disposed in the pre-cast sleeve 14. The left end of the electric penetration device is far away from the hot chamber and is connected with the pre-welding flange 17, and the right end of the electric penetration device is close to the hot chamber and is positioned in the hot chamber or in one end, close to the hot chamber, of the embedded sleeve 14.

The structure of the electrical penetration device will be described in detail below.

An electric penetration device for a hot chamber comprises a conductor component 3, a cylinder component, a hot chamber outer side junction box 2 and a hot chamber inner side junction box 12; the cylinder assembly comprises a cylinder 18, a conductor fixing device 5 and an end plate 16, wherein the left end of the cylinder 18 is connected with the right side of the conductor fixing device 5, and the right end of the cylinder is connected with the left side of the end plate 16; the hot box outside connection box 2 is connected on the left side of the conductor fixing device 5, and the hot box inside connection box 12 is connected on the right side of the end plate 16; a hot chamber outer side connector 1 is mounted on the hot chamber outer side junction box 2, and a hot chamber inner side connector 13 is mounted on the hot chamber inner side junction box 12; in this embodiment, the conductor fixing device 5 is an end plate flange, so that the electric penetration device for the hot chamber forms a flange assembly type electric penetration device.

A support assembly and a plurality of shielding assemblies 10 for blocking rays are also arranged in the cylinder 18; the support assembly comprises a support rod 8, the support rod 8 penetrates through all the shielding assemblies 10 and is connected with the conductor fixing device 5, and all the shielding assemblies 10 are axially fixed through the support assembly. The shielding assembly 10 is provided with a through hole or a groove for the conductor assembly 3 or an extension lead of the conductor assembly 3 to pass through. The shielding component 10 is matched with the cylinder body structure and is cylindrical, when the conductor component 3 or the extension lead of the conductor component 3 needs to pass through the circumferential surface (hereinafter referred to as the wall surface or the side wall) of the shielding component 10, a groove is formed on the circumferential surface of the shielding component 10 and penetrates through the left end surface and the right end surface of the shielding component 10, and the groove can be a smooth groove or a spiral groove; when the extension lead of the conductor component 3 and the conductor component 3 do not need to pass through the circumferential surface, a through hole is arranged on the shielding component 10 and also passes through the left end surface and the right end surface of the shielding component 10; the projections of the through holes and the grooves of all the shielding assemblies 10 on the H plane are not coincident, and the H plane is any plane parallel to the radial direction of the cylinder 18. The side wall of the shielding component 10 is all contacted with the inner wall of the cylinder 18 except the groove position, so as to block rays and realize radiation protection. In the embodiment, the shielding component 10 adopts a lead shielding block; in other embodiments, shield assembly 10 can be made of other radiation protective materials, such as lead boron polyethylene, boron-containing polyethylene, and the like. The number and position of the shielding components 11 are determined according to the calculation requirements of radiation protection, and are positioned by the supporting components.

The conductor assembly 3 is connected to the conductor fixing device 5 in a sealing mode, and the left end or the extended lead at the left end of the conductor assembly 3 extends out of the conductor fixing device 5 to be connected with the hot chamber external connector 1; the right end of the conductor assembly 3 or the extension wire at the right end is connected to the hot room side connector 13 through the shield assembly 10. The extension lead of the conductor assembly refers to an extension line of a cable inside the conductor assembly, and the conductor assembly 3 is fixed on the end plate flange, and only the extension line of the cable inside the conductor assembly passes through the shielding assembly 10. Fig. 1 shows a case in which 1 conductor assembly 3 is fixed to an end plate flange 5, and only the extension wires of the cable inside the conductor assembly pass through 3 shield assemblies 10. In the specific implementation process, a plurality of conductor assemblies 3 can be arranged on the end plate flange 5 in a penetrating manner, and each shielding assembly 10 can be provided with a plurality of through holes or grooves which can be arranged according to specific requirements; of course, the preferred number of conductor assemblies 3 is 1-3 to ensure hermeticity. The conductor component 3 can adopt conductor components with various specifications, covers various types such as power, instrument control and coaxial, and can meet the requirement that various types of cables penetrate through the pressure boundary of the heat chamber.

The specific implementation mode that the conductor component 3 is connected to the conductor fixing device 5 in a sealing mode is as follows: a sealing assembly 4 is further arranged between the conductor assembly 3 and the conductor fixing device 5, and the sealing assembly 4 is used for sealing a gap between the conductor assembly 3 and the conductor fixing device 5.

When electric penetration device adopted above-mentioned structure, electric penetration device and embedded sleeve 14 complex concrete mode is: the left end of the cylinder 18 is connected with an end plate flange; the left end of the end plate flange is connected with the outer connector 1 of the hot chamber, and the right end of the end plate flange is connected with the prewelding flange 17; the right end of the cylinder is connected with an end plate 16 which is positioned in one end of the embedded sleeve 14 close to the hot chamber. And a sealing ring 7 is arranged between the end plate flange and the prewelding flange 17, and the sealing ring 7 is used for sealing a gap between the end surface of the prewelding flange 17 and the end surface of the conductor fixing device 5. A sealing mechanism 11 is further arranged between the outer wall of the right end of the cylinder 18 and the embedded sleeve 14, and the sealing mechanism 11 is a sealing ring or a sealing gasket. Wherein: the sealing ring 7 between the right side of the end plate flange 5 and the embedded sleeve 14 can adopt a sealing cavity formed between two sealing rings of the two sealing rings 7; the sealing performance between the end plate flange and the embedded sleeve 14 can be detected by designing a leakage detecting hole. A sealing ring or a sealing gasket can be arranged between the outer wall of the right end of the cylinder 18 and the embedded sleeve 14. In this embodiment, the seal ring 7 is preferably a double O-ring (or C-ring) rubber seal ring or a double O-ring (or C-ring) metal seal ring.

The conductor fixing device 5 is provided with a first leak detection hole 19 and a second leak detection hole 20; the first leak detection opening 19 serves for detecting the sealing between the conductor arrangement 3 and the conductor holder 5, and the second leak detection opening 20 serves for detecting the sealing between the conductor holder 5 and the pre-welded flange 17.

The embedded sleeve 14 and the cylinder 18 are both in a stepped cylindrical structure, and the cylinder 18 is matched with the embedded sleeve 14, so that the inner diameter of the embedded sleeve 14 at the position where the outer diameter of the cylinder 18 changes correspondingly changes. The diameter of the left side of each embedded sleeve 14 and the diameter of the right side of each cylinder 18 are large, and the diameter of the right side of each embedded sleeve is small; the inner diameter of the embedded sleeve 14 at the position where the outer diameter of the cylinder 18 changes correspondingly changes so as to adapt to the change of the cylinder 18, the cylinder assembly of the penetrating device adopts a sectional and step-shaped reducing design, the embedded sleeve 14 is also designed into a step-shaped structure, the shape of the embedded sleeve is matched with that of the cylinder assembly, and rays can be effectively prevented from being directly irradiated to the outer side of a hot room from a gap between the cylinder assembly of the electric penetrating device and the embedded sleeve.

The following detailed description of the structure and principles of the present application will be given by way of example of an electrical feedthrough device with 1 conductor assembly 3 and 3 lead shielding blocks installed in fig. 1:

the electric penetration device mainly comprises parts such as a hot chamber outer side connector 1, a hot chamber outer side connection box 2, a conductor component 3, a sealing component 4, a cylinder component, a support rod 8, a retainer ring 9, a lead shielding block, a hot chamber inner side connection box 12, a hot chamber inner side connector 13 and the like.

The cylinder assembly penetrates through a wall 15 of the whole pressure boundary, the cylinder assembly is composed of an end plate flange 5, a cylinder 18 and an end plate 16, the cylinder assembly is connected with a pre-welding flange 17 on the wall through bolts, and a double-channel O-shaped (or C-shaped) rubber (or metal) sealing ring 7 is used for sealing between the cylinder assembly and the pre-welding flange. The lead shielding blocks are uniformly arranged inside the cylinder assembly at intervals through the supporting rods 8, and the retaining rings 9 are adopted for axially positioning the lead shielding blocks 10. A groove or a through hole is formed in the lead shielding block and is penetrated by a cable, and the groove and the through hole of the lead shielding block are arranged in a staggered mode, so that the effective shielding thickness is guaranteed. The arrangement quantity and the position of the lead shielding blocks are determined according to the calculation requirement of radiation protection, and are positioned through the supporting component.

The conductor assembly 3 mainly comprises an insulation coated conductor, a sealing module and a stainless steel protective sleeve. The types of the conductor assemblies comprise various types such as power, instrument control, coaxiality and the like, and can meet the penetrating pressure boundary of various types of cables. The supporting assembly in this embodiment includes a supporting rod 8, a retainer ring 9, and a fastener, where the supporting rod 8 passes through a through hole on the shielding assembly 10 and passes through the retainer ring 9 and the fastener to support and position the shielding assembly 10, specifically, two sides of the shielding assembly 10 are limited by the retainer ring 9, the retainer ring 9 is sleeved on the supporting rod 8 and then fixed on the supporting rod 8 by the fastener, and the fastener includes but is not limited to a screw, a bolt, and a stud. Wherein the support rods 8 in the support assembly may further take the form of stepped shafts which in turn pass through the shielding assembly 10. The shielding assembly 10 is provided with a spiral groove or an opening for the extension lead of the large-size conductor assembly 3 or the small-size conductor assembly 3 to penetrate through, the positions of the opening or the opening on the shielding assembly 10 are staggered, and the extension lead of the conductor assembly inside the electric penetration device penetrates through all the shielding assemblies 10 at a proper angle so as to ensure that the shielding performance on any straight line inside the penetration device meets the radiation protection requirement.

The conductor assembly 3 penetrates through the end plate flange 5 of the cylinder assembly, and the sealing assembly 4 is adopted to realize double-channel metal sealing between the conductor assembly 3 and the end plate flange 5 of the cylinder assembly. The extension lead of the conductor component 3 positioned at the inner side of the hot chamber sequentially passes through the through hole of the lead shielding block, extends into the hot chamber internal junction box 12 and is connected with the hot chamber internal connector 13, so that reliable electrical connection at the inner side of the hot chamber is realized. The hot chamber internal connection box 12 is mounted on the end plate 16 of the cylinder assembly by bolts, and the hot chamber connector 13 is mounted on the cover plate of the hot chamber internal connection box 12, and when a connector capable of being remotely operated is selected, the function of performing remote operation by using a manipulator outside the hot chamber can be realized. In this way, the electrical penetration device achieves termination with the inner conductor assembly 3 using the dedicated thermal outdoor-side connector 1 and the thermal indoor-side connector 13, and achieves quick connection with the external cable.

The conductor component 3 mainly comprises an insulation coated conductor (namely a cable), an insulation medium block and an armor sheath, wherein the armor sheath is coated outside the cable, and the insulation medium block is filled between the armor sheath and the cable. The types of the cable can comprise instrument control, power, twisted pair, coaxial, triaxial, optical fiber and the like, and can meet the penetrating pressure boundary of various types of cables. The conductor component 3 can be independently installed or mixed, has various specifications, covers various types such as power, instrument control and coaxiality, and can meet the penetrating pressure boundary of various types of cables. In this embodiment, a number of different numbers and sizes of conductor assemblies 3 may be used, mounted on the end plate flange 5 by the seal assembly 4. Conductor assembly 3 runs through end plate flange 5 to adopt seal assembly 4 to realize the metal seal between conductor assembly and the end plate flange 5, seal assembly 4 mainly comprises gland nut, back cutting ferrule, clamp ring, preceding cutting ferrule that arrange in proper order, seal assembly 4 is used for realizing the sealed of clearance between conductor assembly 3 and the end plate flange 5, and as the general technical personnel in this field, gland nut is used for producing sealed specific pressure, extrudees back cutting ferrule, and back cutting ferrule lasts pressure transmission to clamp ring, and clamp ring is with pressure transmission to preceding cutting ferrule again, and finally, preceding cutting ferrule takes place to warp, realizes the first sealed between conductor assembly 3 and the end plate flange 5, and back cutting ferrule is under gland nut and clamp ring's combined action, takes place deformation equally, realizes that the second between conductor assembly 3 and the end plate flange 5 is sealed. A small hole is designed at any point in the circumferential direction of the compression ring to serve as a leakage detecting hole, the leakage detecting hole in the compression ring is located between the first seal and the second seal, and the detection of the sealing performance of the double-channel metal clamping sleeve can be realized by designing the leakage detecting hole. The sealing assembly is sealed by the metal clamping sleeve, so that the corresponding sealing effect can be realized, meanwhile, the sealing pretightening force is provided through the compression nut to fix the conductor assembly 3 on the end plate flange 5, and the sealing assembly actually plays a role in fixing. The seal assembly 4 may be designed on either side of the end plate flange 5, as desired.

The hot chamber outer side connection box 2 is mounted on an end plate flange 5 of the cylinder assembly by bolts, the hot chamber outer side connector 1 is mounted on a cover plate of the hot chamber outer side connection box 2, and a hot chamber outer side extension wire of the conductor assembly 3 is connected to the hot chamber outer side connector 1. Thereby achieving a reliable electrical connection inside the hot cell.

Sealing mechanism 11 between the outer wall of the right end of the cylinder 18 and the embedded sleeve 14 adopts an O-shaped gasket (ring), and the sealing mechanism 11 is installed on the outer side of the cylinder assembly and used for plugging a gap between the cylinder assembly and the embedded sleeve, so that radioactive aerosol is effectively prevented from entering the gap to pollute the outer surface of the cylinder assembly, and convenience is brought to subsequent operation maintenance and retirement treatment of the device.

On the basis of the embodiment, the electric penetration system can be further improved,

as shown in fig. 3, two leak detection holes are provided in the end plate flange 5 of the cartridge assembly: a second leak hole 20 and a first leak hole 19; the second leak detection hole 20 can detect the sealing performance of a double-channel O-shaped (or C-shaped) rubber (or metal) seal ring between the end plate flange 5 and the mating flange of the embedded sleeve 14, and the first leak detection hole 19 can detect the sealing performance of a double-channel metal seal formed between the conductor assembly 3 and the end plate flange 5. The sealing performance of the electrical penetration device can be regularly detected, the sealing performance of the electrical penetration device is guaranteed to be in effective monitoring, the completeness of a pressure boundary is guaranteed, and radioactive materials are prevented from leaking.

Because the sealing ring 7 between the right side of the end plate flange 5 and the embedded sleeve 14 can adopt a double-channel sealing ring 7, when the second detection hole 20 is arranged, a sealing cavity formed between the two sealing rings of the double-channel sealing ring 7 is communicated with the second leakage detection hole 20; similarly, the sealing assembly 4 realizes double-channel metal sealing of the gap between the conductor assembly 3 and the end plate flange 5, and when the first leakage detecting hole 19 is arranged, a sealing cavity between the double-channel metal sealing is communicated to the first leakage detecting hole 19.

The device and the system of the embodiment have the following characteristics:

the flange assembly type structural design ensures that the device assembly has simple assembly steps and good maintenance performance;

the modular design is adopted, the modules with the electrical function, the shielding function, the sealing function, the remote operation function and the like are designed, and all the functions are integrated, so that the independence of all the functions is ensured, and the reliability of the equipment is improved;

the realization of the electrical function is realized through the conductor assembly and the connector, and the application of the connector ensures that the field operation and maintenance are convenient;

the shielding function is realized by a plurality of lead shielding blocks, the arrangement and the hole opening positions of the lead shielding blocks fully consider the radiation protection requirement, and the good shielding effect is ensured;

the application of the barrel assembly and the embedded sleeve stepped structure also ensures that the gap between the barrel assembly and the embedded sleeve has enough shielding thickness;

when the connector capable of being remotely operated is selected, the hot chamber side connector has a remote operation function, and remote operation of equipment is realized.

In conclusion, the electric penetration device for the hot chamber has the advantages of reasonable structure, reliable performance and convenient maintenance, has good special requirements on high temperature resistance, high pressure resistance, irradiation resistance, shock resistance and the like, can ensure good mechanical integrity and electrical integrity under the environmental condition in the pressure boundary of the hot chamber, and further can complete the connection and replacement operation of cables on the inner side of the hot chamber on the outer side of the hot chamber by utilizing the manipulator. The device can meet the functional requirement of a cable penetrating through a pressure boundary.

The embodiment also provides an installation method of the electric penetration system for the hot chamber, which comprises the following steps:

s11, inserting the conductor assembly 3 into the conductor fixing device 5, and connecting the conductor assembly 3 on the conductor fixing device 5 in a sealing mode;

s12, fixing the shielding component 10 on the supporting rod 8, and fixedly connecting one end of the supporting rod 8 close to the conductor component 3 on the conductor component 3;

s13, sequentially passing the extension lead of the conductor component 3 through the shielding component 10 from left to right;

s14, sleeving the cylinder 18 on the outer sides of the support rod 8 and the shielding assembly 10, and connecting the cylinder with one side of the fixing device 5 by welding or threaded connection;

s15, passing the extension lead at the left end of the conductor assembly 3 (or the left end of the conductor assembly 3) through the hot chamber outer side junction box 2, and then connecting with the hot chamber outer side connector 1 by adopting compression joint or welding; the extension lead at the right end of the conductor assembly 3 passes through the hot chamber inner side junction box 12, then is connected with the hot chamber inner side connector 13 by adopting compression joint or welding, and finally, the hot chamber outer side connector 1 is installed on the hot chamber outer side junction box 2, and the hot chamber inner side connector 13 is installed on the hot chamber inner side junction box 12; at this time, the electrical penetration device is assembled;

s16, sleeving a sealing ring or a sealing gasket on the outer wall of one side of the cylinder 18 close to the hot chamber, and installing a double-channel O-shaped ring on one side of the fixing device 5 close to the pre-welding flange 17;

and S17, enabling the electric penetration device to penetrate through the embedded sleeve 14, and fixing the electric penetration device on the embedded sleeve 14 by bolts.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. An electric penetration device for a hot chamber is characterized by comprising a conductor assembly (3), a cylinder assembly, a hot chamber outer side junction box (2) and a hot chamber inner side junction box (12); the cylinder assembly comprises a cylinder (18), a conductor fixing device (5) and an end plate (16), one end of the cylinder (18) is connected with the conductor fixing device (5), and the other end of the cylinder (18) is connected with the end plate (16);

the hot chamber outer side junction box (2) is connected to the conductor fixing device (5) and is connected to different sides of the conductor fixing device (5) together with the cylinder (18); the hot chamber inner side junction box (12) is connected to the end plate (16) and is connected to the different sides of the end plate (16) with the cylinder (18);

a hot chamber outer side connector (1) is mounted on the hot chamber outer side junction box (2), and a hot chamber inner side connector (13) is mounted on the hot chamber inner side junction box (12);

a shielding component (10) for blocking rays is also arranged in the cylinder body (18); the shielding assembly (10) is provided with a through hole or a groove for the extension lead of the conductor assembly (3) to pass through;

the conductor assembly (3) is connected to the conductor fixing device (5) in a sealing mode, and one end of the conductor assembly (3) or an extension lead at one end of the conductor assembly extends out of the conductor fixing device (5) to be connected with the hot chamber external connector (1); the other end of the conductor assembly (3) or the extension lead of the other end passes through the shielding assembly (10) to be connected with the hot chamber inner side connector (13).

2. An electric penetration device for hot chamber according to claim 1, wherein the number of said shielding assemblies (10) is one or more, and a support assembly is further disposed in said barrel (18), said support assembly comprising a support rod (8), said support rod (8) passing through all said shielding assemblies (10) and being connected to said conductor fixing device (5), all said shielding assemblies (10) being axially fixed by said support assembly.

3. An electrical feedthrough for a hotcell according to claim 1, characterized in that the projections of the through-holes and the recesses of all shielding assemblies (10) do not coincide on an H-plane parallel to the radial direction of the barrel (18).

4. An electric penetration device for a hot cell according to claim 1, wherein a sealing assembly (4) is further provided between the conductor assembly (3) and the conductor fixture (5), the sealing assembly (4) being adapted to seal a gap between the conductor assembly (3) and the conductor fixture (5).

5. An electrical feedthrough for a hotcell as claimed in claim 1, characterised in that the cartridge (18) is of stepped cylindrical configuration.

6. The utility model provides an electric system that runs through for hot cell, its characterized in that includes pre-buried sleeve pipe (14) of setting in wall body (15), sets up prewelding flange (17) on wall body (15) and wears to establish the electric through device in pre-buried sleeve pipe (14), electric through device is the electric through device for hot cell of any one of claims 1-5, conductor fixing device (5) and prewelding flange (17) of electric through device are connected, and are provided with sealing washer (7) between conductor fixing device (5) and prewelding flange (17), sealing washer (7) are used for realizing the sealed of the clearance between prewelding flange (17) terminal surface and conductor fixing device (5) terminal surface.

7. The electric penetration system for the hot chamber as claimed in claim 6, wherein the embedded sleeve (14) and the cylinder (18) are both in a stepped cylindrical structure, and the cylinder (18) is matched with the embedded sleeve (14) so that the inner diameter of the embedded sleeve (14) is correspondingly changed at the position where the outer diameter of the cylinder (18) is changed.

8. The electric penetration system for the hot chamber is characterized in that a sealing mechanism (11) is further arranged between the outer wall of one side, close to the hot chamber, of the cylinder body (18) and the embedded sleeve (14), and the sealing mechanism (11) is a sealing ring or a sealing gasket.

9. An electrical feedthrough system for a hotcell as claimed in claim 8, characterized in that the conductor holder (5) is provided with a first (19) and a second (20) leak hole; the first leak detection hole (19) is used for detecting the sealing performance between the conductor component (3) and the conductor fixing device (5), and the second leak detection hole (20) is used for detecting the sealing performance between the conductor fixing device (5) and the pre-welding flange (17).

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