Electrical penetration assembly and nuclear reactor device

Abstract

The embodiment of the invention discloses an electrical penetration assembly and a nuclear reactor device, the electrical penetration assembly comprises a wire, a wire sleeve pipe and a fireproof sealing element, the wire sleeve pipe is sleeved outside the wire, the fireproof sealing element is arranged in the wire sleeve pipe, the wire penetrates through the fireproof sealing element, and the fireproof sealing element is solidified when the environment temperature is greater than or equal to a high-temperature threshold value. The fireproof sealing element has good high-temperature insulation performance and stability in a curing state, the sealing performance and fire resistance of the electrical penetration assembly are guaranteed, the electrical penetration assembly still has reliable electrical conduction performance under the working condition of high temperature or open fire, smooth transmission of electrical feed-through signals is guaranteed, and the electrical penetration assembly is safe and reliable. And the applicability of the electrical penetration assembly to a high-temperature working condition is improved. And the reliability of the electrical penetration assembly is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of nuclear reactor technology, and in particular to an electrical penetration piece and a nuclear reactor device. Background Art

[0002] Electrical penetrations are installed in the working environment of a nuclear reactor and are used to connect cables that pass through the shell. Electrical penetrations need to adapt to the complex environmental conditions of a nuclear power plant to ensure smooth transmission of electrical feedthrough signals under harsh working conditions such as high temperature and open flames.

[0003] In the related art, electrical penetrations have low thermal stability and fire resistance, and their internal organic materials such as sealing fillers and insulating materials are prone to aging under long-term harsh environmental conditions in nuclear power plants, making it difficult to ensure the sealing and fire resistance of electrical penetrations. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides an electrical penetration.

[0006] A second aspect of the present invention provides a nuclear reactor device.

[0007] In view of this, according to the first aspect of the technical solution of the present application, an electrical penetration is proposed, which includes: a wire, a wire sleeve and a fireproof seal, the wire sleeve is arranged outside the wire, the fireproof seal is arranged inside the wire sleeve, the wire passes through the fireproof seal, and when the ambient temperature is greater than or equal to the high temperature threshold, the fireproof seal is cured.

[0008] In some technical solutions provided in the present application, optionally, the fireproof seal is made of inorganic fire-resistant material, and the material of the fireproof seal includes at least one of silicone rubber, glass fiber, and silicone sealant.

[0009] In some technical solutions provided in the present application, optionally, the electrical penetration also includes a fireproof sealing component, the fireproof sealing component is located on one side of the fireproof sealing component, and the wire passes through the fireproof sealing component.

[0010] In some technical solutions provided in the present application, the fireproof sealing assembly includes: a sleeve and a sealing module, the sealing module is arranged in the sleeve, and the wire passes through the sealing module.

[0011] In some technical solutions provided in the present application, there are multiple sealing modules, and the multiple sealing modules are adjacently arranged along the extension direction of the wire.

[0012] In some technical solutions provided in the present application, the wire sleeve wraps around one end of the fireproof sealing component close to the fireproof sealing component.

[0013] In some technical solutions provided in the present application, the electrical penetration also includes a ceramic composite tape, which is wound around the outside of the wire sleeve. When the ambient temperature is greater than or equal to the high temperature threshold, the ceramic composite tape solidifies into a ceramic body.

[0014] In some technical solutions provided in the present application, optionally, the wire sleeve is made of heat shrinkable material.

[0015] In some technical solutions provided in the present application, optionally, the casing pipe is made of nuclear-grade material.

[0016] In some technical solutions provided in the present application, optionally, the electrical penetration also includes a partition, and the partition abuts against the end of the fireproof sealing component.

[0017] The second technical solution of the present application provides a nuclear reactor device, which includes a shell and an electrical penetration provided by any one of the first technical solutions of the present application. The shell is provided with a ferrule, and the electrical penetration passes through the ferrule and is sealed and connected to the ferrule.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] Under extreme working conditions such as high temperature and open flame, the ambient temperature of the electrical penetration is greater than or equal to the high temperature threshold, and the fireproof seal can be cured. The fireproof seal has good high temperature insulation performance and stability in the cured state, ensuring the sealing and fire resistance of the electrical penetration, so that the electrical penetration still has reliable electrical conduction performance under high temperature or open flame conditions, ensuring the smooth transmission of electrical feedthrough signals, and improving the applicability of the electrical penetration to high temperature conditions. The reliability of the electrical penetration is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 A schematic diagram of the structure of an electrical penetration member according to an embodiment of the present application;

[0022] Figure 2 A schematic structural diagram of a nuclear reactor device according to an embodiment of the present application.

[0023] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0024] 10 electrical penetrations, 100 conductors, 200 wire tubes, 300 fireproof seals, 400 fireproof sealing components, 410 casings, 420 sealing modules, 500 ceramic composite tapes, 20 nuclear reactor devices, 21 shells, 22 ferrules. DETAILED DESCRIPTION

[0025] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0026] The first aspect of the present application provides an electrical penetration member 10, such as Figure 1 As shown, the electrical penetration component 10 includes: a wire 100, a wire sleeve 200 and a fireproof seal 300. The wire sleeve 200 is sleeved on the outside of the wire 100, and the fireproof seal 300 is arranged in the wire sleeve 200. The wire 100 passes through the fireproof seal 300. When the ambient temperature is greater than or equal to the high temperature threshold, the fireproof seal 300 is cured.

[0027] In this embodiment, the wire 100 is arranged in the wire casing 200, the space between the wire 100 and the wire casing 200 forms a wire core space, and the fireproof seal 300 is arranged in the wire core space, so that the end of the wire 100 extends out of the fireproof seal 300. The fireproof seal 300 is filled in the wire casing 200 and abuts against the inner wall of the wire casing 200. The fireproof seal 300 has the functions of flame retardancy, fire isolation and sealing, so that the fireproof seal 300 forms a barrier structure against external high temperature and open flames, forming an inner layer fire barrier of the electrical penetration 10.

[0028] Under extreme working conditions such as high temperature and open flame, the ambient temperature of the electrical penetration 10 is greater than or equal to the high temperature threshold, and the fireproof seal 300 can be cured, that is, the fireproof seal 300 is transformed from a low molecular structure to a high molecular structure. The fireproof seal 300 has good high temperature insulation performance and stability in the cured state, ensuring the sealing and fire resistance of the electrical penetration 10, so that the electrical penetration 10 still has reliable electrical conduction performance under high temperature or open flame conditions, ensuring the smooth transmission of electrical feedthrough signals, and improving the applicability of the electrical penetration 10 to high temperature conditions. The reliability of the electrical penetration 10 is improved.

[0029] In some embodiments provided in the present application, optionally, the fireproof seal 300 is made of inorganic fire-resistant material, and the material of the fireproof seal 300 includes at least one of silicone rubber, glass fiber, and silicone sealant.

[0030] In this embodiment, the fireproof seal 300 is located at the end of the wire 100 to provide fireproof and sealing protection for the end of the wire 100. The fireproof seal 300 is made of inorganic fire-resistant material to prevent organic materials from melting and aging easily at high temperatures, thereby affecting the protection effect of the fireproof seal 300. The material of the fireproof seal 300 includes at least one of silicone rubber, glass fiber, and silicone sealant, so that the fireproof seal 300 can be cured under extreme working conditions such as high temperature and open flame, ensuring the applicability of the electrical penetration 10 to high temperature working conditions. The reliability of the electrical penetration 10 is improved.

[0031] In some embodiments provided in this application, Figure 1 As shown, optionally, the electrical penetration 10 further includes a fireproof sealing component 400 , which is located on one side of the fireproof sealing component 300 , and the wire 100 passes through the fireproof sealing component 400 .

[0032] In this embodiment, the electrical penetration 10 is used for a nuclear reactor device 20. A ferrule 22 is provided on a shell 21 of the nuclear reactor device 20. The electrical penetration 10 is inserted into the ferrule 22. The fireproof sealing component 400 is located on the side of the fireproof sealing component 300 away from the end of the wire 100, so that the fireproof sealing component 300 is located between the fireproof sealing component 400 and the end of the wire 100. The wire 100 passes through the fireproof sealing component 400 to be connected with other electrical components. The fireproof sealing component 400 is sealed and connected to the ferrule 22. The fireproof sealing component 400 has the functions of flame retardancy, fire isolation and sealing. The fireproof sealing component 400 cooperates with the fireproof sealing component 300 to form a double barrier structure, which improves the thermal stability and fire resistance of the electrical penetration 10 and ensures that the electrical penetration 10 still has reliable electrical conductivity under high temperature or open flame conditions.

[0033] In some embodiments provided in this application, Figure 1 As shown, the fireproof sealing assembly 400 includes: a sleeve 410 and a sealing module 420 . The sealing module 420 is disposed in the sleeve 410 , and the wire 100 passes through the sealing module 420 .

[0034] In this embodiment, the sleeve 410 is inserted into the ferrule 22, and the sealing module 420 is closely attached to the inner wall of the sleeve 410, ensuring the airtightness of the fireproof sealing assembly 400 and maintaining the integrity of the connection boundary. The sleeve 410 can be a metal tube, which positions the sealing module 420 and blocks the sealing module 420 from direct contact with the ferrule 22. The sleeve 410 provides structural protection for the sealing module 420, ensuring that the sealing module 420 can be used for a long time.

[0035] For example, the sealing module 420 is made of polyetheretherketone material, which has high temperature resistance and corrosion resistance, so that the sealing module 420 has good stability and fire resistance in harsh environments such as high temperature, ensuring the effectiveness of end sealing and fire prevention. In addition, polyetheretherketone has strong strength, toughness and insulation performance, which can prevent the wire 100 from leaking electricity.

[0036] In some embodiments provided in this application, Figure 1 As shown, there are multiple sealing modules 420 , and the multiple sealing modules 420 are adjacently arranged along the extension direction of the wire 100 .

[0037] In this embodiment, a plurality of sealing modules 420 are provided in the sleeve 410, and the wire 100 passes through the plurality of sealing modules 420. The plurality of sealing modules 420 are fitted together, thereby enhancing the insulation and fireproofing effects of the sealing modules 420, facilitating the installation of the sealing modules 420, and improving the assembly efficiency of the fireproof sealing assembly 400.

[0038] In some embodiments provided in this application, Figure 1 As shown, the wire sleeve 200 wraps around one end of the fireproof seal assembly 400 close to the fireproof seal 300 .

[0039] In this embodiment, one end of the fireproof sealing component 400 close to the fireproof sealing component 300 extends into the wire sleeve 200, so that the wire sleeve 200 can provide structural protection for the end of the fireproof sealing component 400. Specifically, the wire sleeve 200 wraps one end of the sleeve 410, so that the connection between the fireproof sealing component 400 and the wire sleeve 200 is tighter, thereby improving the sealing and reliability of the electrical penetration 10.

[0040] In some embodiments provided in this application, Figure 1 As shown, the electrical penetration 10 further includes a ceramic composite tape 500 , which is wound around the outer surface of the wire casing 200 . When the ambient temperature is greater than or equal to the high temperature threshold, the ceramic composite tape 500 is solidified into a ceramic body.

[0041] In this embodiment, the ceramic composite tape 500 is a special silicone rubber wrapped refractory material composited with ceramic refractory silicone rubber and high-temperature resistant inorganic glass fiber. The ceramic composite tape 500 is wrapped around the outside of the wire sleeve 200. The ceramic composite tape 500 completely covers the outer surface of the wire sleeve 200. Under extreme working conditions such as high temperature and open flame, the ambient temperature is greater than or equal to the high temperature threshold, and the ceramic composite tape 500 solidifies into a ceramic body. The ceramic composite tape 500 has good high-temperature insulation performance and stability in the ceramic body state, and can be quickly burned into a ceramic-like hard and complete shell in a fire environment. The hard shell ensures the integrity of the equipment, making the ceramic composite tape 500 the outermost fire barrier, thereby improving the tolerance and adaptability of the electrical penetration 10 to high temperature environments.

[0042] In some embodiments provided in the present application, optionally, the wire sleeve 200 is made of heat shrinkable material.

[0043] In this embodiment, the wire sleeve 200 can shrink and cover the outer surface of the fireproof seal 300, the wire 100 and the sleeve 410 after being heated. The heat shrinkable material has good insulation, moisture resistance and sealing properties, which makes the wrapping effect of the wire sleeve 200 more snug, enables the wire sleeve 200 to prevent internal current leakage and electrical short circuit, provides a reliable sealing effect, avoids the internal being affected by the external environment, and improves the reliability of the wire sleeve 200.

[0044] In some embodiments provided in the present application, optionally, the casing tube 200 is made of nuclear grade material.

[0045] In this embodiment, the wire casing 200 is made of nuclear safety grade materials and can perform nuclear safety functions. The wire casing 200 can be used in radioactive and reactivity controlled environments and in response to accidents within the design basis, so that the wire casing 200 can provide nuclear safety grade protection, enable the electrical penetration 10 to maintain the feedthrough of electrical signals in extreme environments, and prevent the leakage of radioactive substances in the reactor.

[0046] In some embodiments provided in the present application, optionally, the electrical penetration 10 further includes a partition, which abuts against an end of the fireproof seal 300 .

[0047] In this embodiment, the end of the fireproof seal 300 is connected to the partition, so that the partition limits and determines the fireproof seal 300, prevents the fireproof seal 300 from moving in the wire sleeve 200, and improves the stability of the fireproof seal 300.

[0048] In a second aspect of the present application, a nuclear reactor device 20 is provided, such as Figure 2As shown, the nuclear reactor device 20 includes a shell 21 and an electrical penetration piece 10 provided in any one of the first aspect embodiments of the present application. A ferrule 22 is provided on the shell 21. The electrical penetration piece 10 passes through the ferrule 22 and is sealed and connected to the ferrule 22.

[0049] In this embodiment, the shell 21 can be a nuclear reaction containment vessel, and a through hole is provided on the shell 21. The ferrule 22 is provided in the through hole. The electrical through-hole 10 passes through and is sealed and connected with the ferrule 22 to ensure the sealing of the shell 21, so that the electrical through-hole passes through the shell 21, and then the electrical components inside and outside the shell 21 are fed through the electrical through-hole 10.

[0050] It should be noted that the nuclear reactor device 20 includes the electrical penetration piece 10 provided by any of the above embodiments of the present application, and thus has all the beneficial technical effects of the above electrical penetration piece 10, which will not be described here in detail to avoid repetition.

[0051] In a specific embodiment, the electrical penetration 10 is a feed-through fireproof component used in a nuclear power plant. A fireproof seal 300 is filled in the conductor core and the end space. The outer sleeve of the fireproof seal 300 is a heat shrink tube (i.e., the wire sleeve 200), and then the ceramic composite tape 500 is wrapped around the heat shrink tube to achieve feed-through fireproofing. The feed-through fireproof component has multiple fireproofing functions, including internal fireproofing and double-pass fireproofing at the end. The heat shrink tube used to prepare the feed-through fireproof component plays a role in fixing the fireproof seal 300, and can ensure that the fireproof seal 300 will not flow out directly before solidification. The fireproof seal 300 used for the internal fireproofing function is composed of inorganic refractory materials. It will solidify rapidly when it encounters extreme conditions such as high temperature and open flames, and has good high-temperature insulation performance. It serves as an inner fireproof barrier to ensure the normal operation of the conductor. The fireproof sealing component 400 used for the first fireproofing function at the end is made of polyetheretherketone material, which has high temperature resistance and will not melt easily under high temperature conditions, ensuring the effectiveness of the end seal. The ceramic composite tape 500 used for the second fire protection function at the end is wrapped around the heat shrink tube and solidified into a ceramic body after being affected by high temperature or open flame, serving as the outermost fire protection barrier to improve the tolerance of the overall device.

[0052] The present invention proposes a feedthrough refractory assembly for use in nuclear power plants, which can not only ensure the sealing, electrical, refractory feedthrough and environmental resistance performance of the equipment, but also fully adapt to the compact space on site and meet the limited installation space requirement of the shell wall of the nuclear power plant.

[0053] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electrical penetration (10), characterized in that: include: Wire (100); A wire sleeve (200) sleeved outside the wire (100); The fireproof seal (300) is arranged in the wire casing (200), the wire (100) passes through the fireproof seal (300), and when the ambient temperature is greater than or equal to a high temperature threshold, the fireproof seal (300) is solidified.

2. The electrical penetration (10) according to claim 1, characterized in that The fireproof seal (300) is made of inorganic fire-resistant material, and the material of the fireproof seal (300) includes at least one of silicone rubber, glass fiber, and silicone sealant.

3. The electrical penetration (10) according to claim 1, characterized in that: The electrical penetration member (10) further comprises: A fireproof sealing assembly (400) is located on one side of the fireproof sealing member (300), and the wire (100) passes through the fireproof sealing assembly (400).

4. The electrical penetration (10) according to claim 3, characterized in that: The fireproof sealing assembly (400) comprises: Casing (410); A sealing module (420) is disposed in the sleeve (410), and the wire (100) passes through the sealing module (420).

5. The electrical penetration (10) according to claim 4, characterized in that There are a plurality of sealing modules (420), and the plurality of sealing modules (420) are arranged adjacent to each other along the extension direction of the wire (100).

6. The electrical penetration (10) according to claim 3, characterized in that: The wire sleeve (200) wraps around one end of the fireproof sealing assembly (400) close to the fireproof sealing member (300).

7. The electrical penetration (10) according to claim 1, characterized in that Also includes: A ceramic composite tape (500) is wound around the outside of the casing tube (200), and when the ambient temperature is greater than or equal to a high temperature threshold, the ceramic composite tape (500) solidifies into a ceramic body.

8. The electrical penetration (10) according to any one of claims 1 to 7, characterized in that: The wire sleeve (200) is made of heat shrinkable material.

9. The electrical penetration (10) according to any one of claims 1 to 7, characterized in that The casing tube (200) is made of nuclear grade material.

10. A nuclear reactor device (20), characterized in that: include: The electrical penetration (10) according to any one of claims 1 to 9; A housing (21) is provided with a sleeve (22), and the electrical penetration piece (10) passes through the sleeve (22) and is sealedly connected to the sleeve (22).

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