阅读说明：本技术 一种核电站用耐高温核岛专用电缆 (High-temperature-resistant special cable for nuclear island for nuclear power station ) 是由 韩俊宝 夏候东 宰学龙 周俊 徐晓丽 朱元忠 陈安鹏 陶恒莹 郑斌 朱道进 于 2020-04-30 设计创作，主要内容包括：本发明涉及核电缆技术领域,且公开了一种核电站用耐高温核岛专用电缆,包括导体,导体外包裹有耐高温层,耐高温层的外侧包裹有绝缘层,绝缘层的外侧挤包有内套层,内套层的外侧套接有防喷淋隔离层；耐高温层,其具体为：在导体外采用特殊工艺的新型煅烧云母耐火带重叠绕包；绝缘层,其具体为：以SiO2为主体,在燃烧过程中烧结成的致密导体保护外壳,且致密导体保护外壳采用走线速度同步控制技术和反射磁铁技术的Mev3.0型高频电子辐照加速器,使材料由原先的线性分子结构变为网状结构。该核电站用耐高温核岛专用电缆,能够解决目前我国的核电缆发展水平较低,其自身性能也较为低下,难以满足使用需求的问题。(The invention relates to the technical field of nuclear cables and discloses a high-temperature-resistant special cable for a nuclear island, which comprises a conductor, wherein a high-temperature-resistant layer is wrapped outside the conductor, an insulating layer is wrapped outside the high-temperature-resistant layer, an inner jacket layer is extruded outside the insulating layer, and a spray-prevention isolating layer is sleeved outside the inner jacket layer; the high temperature resistant layer specifically is: a novel calcined mica refractory belt with a special process is lapped outside the conductor; an insulating layer, which is specifically: the SiO2 is used as a main body, a compact conductor protective shell is sintered in the combustion process, and the compact conductor protective shell adopts a Mev3.0 type high-frequency electron irradiation accelerator of a wiring speed synchronous control technology and a reflection magnet technology, so that the original linear molecular structure of the material is changed into a net structure. The high-temperature-resistant special cable for the nuclear island can solve the problems that the development level of the existing national nuclear cable is low, the performance of the existing national nuclear cable is low, and the use requirement is difficult to meet.)

1. The utility model provides a high temperature resistant nuclear island private cable for nuclear power station, includes conductor (1), its characterized in that: the conductor (1) is wrapped by a high-temperature-resistant layer (2), the outer side of the high-temperature-resistant layer (2) is wrapped by an insulating layer (3), the outer side of the insulating layer (3) is wrapped by an inner jacket layer (4) in an extruding manner, and the outer side of the inner jacket layer (4) is sleeved with a spray-prevention isolating layer (5);

the high-temperature resistant layer (2) is specifically: a novel calcined mica refractory tape with a special process is lapped outside the conductor (1);

the insulating layer (3) is specifically: the SiO2 is taken as a main body, a compact conductor protective shell is sintered in the combustion process, and the compact conductor protective shell adopts a Mev3.0 type high-frequency electron irradiation accelerator of a wiring speed synchronous control technology and a reflection magnet technology, so that the original linear molecular structure of the material is changed into a net structure;

the inner sleeve layer (4) is specifically as follows: an extrusion type extrusion packing structure is adopted, so that the increase of the outer diameter caused by strip-shaped packing is reduced, and the roundness of the cable is improved;

the anti-spray isolation layer (5) specifically comprises the following components: adopting a mixture silicon rubber of methyl vinyl silicon rubber and methyl phenyl vinyl silicon rubber, wherein the weight ratio of the mixture silicon rubber to the methyl vinyl silicon rubber is 30-50: 12-32.

2. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 1, wherein: an outer sheath layer (6) is sleeved outside the spray-proof isolation layer (5), a plurality of buffer mechanisms are arranged on the spray-proof isolation layer (5) and the outer sheath layer (6), the plurality of buffer mechanisms are annularly distributed by taking the spray-proof isolation layer (5) as a center, and each buffer mechanism comprises a plurality of buffer components which are linearly distributed;

the buffer assembly comprises a curved buffer plate (7) and a curved support frame (8), the buffer plate (7) is fixedly connected to the inner side wall of the outer sheath layer (6), the position of the support frame (8) corresponding to the buffer plate (7) is arranged on the outer side wall of the anti-spray isolation layer (5), one side, close to the support frame (8), of the buffer plate (7) is provided with a chute (9) with a T-shaped section, sliders (10) with T-shaped sections are symmetrically and slidably connected in the chute (9), the two sliders (10) are fixedly connected with first springs (11) in an opposite end-to-end symmetrical mode, the other ends of the first springs (11) are fixedly connected to the corresponding chute walls of the chute (9), one end, far away from the chute bottom of the chute (9), of each slider (10) penetrates through a notch of the chute (9) to be hinged with a transmission rod (12), and the other ends of the two transmission rods (12), one end fixedly connected with gangbar (14) of buffer board (7) is kept away from in driving plate (13), the other end of gangbar (14) runs through support frame (8) and extends to support frame (8) interior, one end fixedly connected with second spring (15) that driving plate (13) is close to support frame (8), the other end fixed connection of second spring (15) is on support frame (8).

3. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 2, wherein: slide bar (16) is fixedly connected with in spout (9), slide bar (16) run through first spring (11) and slider (10) setting, first spring (11) cover is established on slide bar (16), and slide bar (16) and slider (10) sliding connection.

4. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 2, wherein: one end of the linkage rod (14) far away from the transmission plate (13) is fixedly connected with an anti-drop block (17).

5. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 2, wherein: the sliding block is characterized in that a rolling groove (18) is formed in one end, close to the bottom of the sliding groove (9), of the sliding block (10), rolling balls (19) are arranged in the rolling groove (18), one end, far away from the bottom of the rolling groove (18), of each rolling ball (19) penetrates through a notch of the corresponding rolling groove (18), and the rolling balls (19) are connected to the bottom of the sliding groove (9) in a rolling mode.

6. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 5, wherein: the ball diameter of the ball (19) is larger than the groove diameter of the notch of the rolling groove (18), and the ball (19) is made of stainless steel.

7. The high-temperature-resistant special cable for the nuclear island for the nuclear power station as claimed in claim 2, wherein: the linkage rod (14) is connected with the support frame (8) in a sliding mode, and the second spring (15) is sleeved on the rod wall of the linkage rod (14).

Technical Field

The invention relates to the technical field of nuclear cables, in particular to a high-temperature-resistant special cable for a nuclear island.

Background

With the rapid development of national economy in China, city construction and industrial scale are continuously enlarged, and the power demand is rapidly increased. At present, the phenomenon of electric power shortage appears in provinces and cities in China, which becomes a great problem influencing the economic construction process of China. The nuclear energy is a clean, safe and reliable energy source, can effectively relieve the contradiction between the increasingly prominent energy demand and resources, transportation and environmental protection in China, and is also an important way for solving the potential crisis of energy in China.

The nuclear power equipment manufacturing has higher monopoly, the equipment investment accounts for about 50% of the total investment of the nuclear power station, wherein the investment proportion of a nuclear island and a conventional island is about 2: 1. the anti-spray nuclear island fire-resistant cable of the nuclear power station is one of important electrical matching products of the nuclear power station, has harsh use environment and strict safety requirement, and is a wire and cable variety with high performance level requirement and larger manufacturing technical difficulty. Under the guidance of the nuclear power aim of 'safety first', the safety problem of the nuclear power station is particularly important, and all countries in the world take strict safety measures for the nuclear power station. The cable line system is also a safety key element as a nuclear power blood vessel and nerve cable line system, plays an important role in the aspects of normal operation and safe shutdown of a nuclear power station, and has a wide nuclear cable market prospect according to the construction requirements of future nuclear power in China. However, the development level of the nuclear cable in China is low at present, the performance of the nuclear cable is low, and the nuclear cable is difficult to meet the use requirement.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the high-temperature-resistant special cable for the nuclear island, which has the advantage of improving the performance of the nuclear cable and solves the problems that the development level of the nuclear cable in China is low, the performance of the nuclear cable is low, and the use requirement is difficult to meet.

(II) technical scheme

In order to achieve the purpose of improving the performance of the nuclear cable, the invention provides the following technical scheme: a high-temperature-resistant special cable for a nuclear island for a nuclear power station comprises a conductor, wherein a high-temperature-resistant layer wraps the conductor, an insulating layer wraps the outer side of the high-temperature-resistant layer, an inner jacket layer is extruded and wrapped on the outer side of the insulating layer, and a spraying-preventing isolating layer is sleeved on the outer side of the inner jacket layer;

the high temperature resistant layer specifically comprises: a novel calcined mica refractory belt with a special process is lapped outside the conductor;

the insulating layer specifically is: the SiO2 is taken as a main body, a compact conductor protective shell is sintered in the combustion process, and the compact conductor protective shell adopts a Mev3.0 type high-frequency electron irradiation accelerator of a wiring speed synchronous control technology and a reflection magnet technology, so that the original linear molecular structure of the material is changed into a net structure;

the inner sleeve layer specifically comprises: an extrusion type extrusion packing structure is adopted, so that the increase of the outer diameter caused by strip-shaped packing is reduced, and the roundness of the cable is improved;

the anti-spraying isolation layer specifically comprises: adopting a mixture silicon rubber of methyl vinyl silicon rubber and methyl phenyl vinyl silicon rubber, wherein the weight ratio of the mixture silicon rubber to the methyl vinyl silicon rubber is 30-50: 12-32.

Preferably, an outer sheath layer is sleeved outside the spray-prevention isolation layer, a plurality of buffer mechanisms are arranged on the spray-prevention isolation layer and the outer sheath layer, the plurality of buffer mechanisms are annularly distributed by taking the spray-prevention isolation layer as a center, and each buffer mechanism comprises a plurality of buffer assemblies which are linearly distributed;

the buffer assembly comprises an arc-shaped buffer plate and an arc-shaped support frame, the buffer plate is fixedly connected to the inner side wall of the outer sheath layer, the position of the support frame corresponding to the buffer plate is arranged on the outer side wall of the anti-spray isolation layer, one side of the buffer plate, which is close to the support frame, is provided with a chute with a T-shaped section, sliders with T-shaped sections are symmetrically and slidably connected in the chute, the opposite ends of the two sliders are symmetrically and fixedly connected with a first spring, the other end of the first spring is fixedly connected to the corresponding chute wall of the chute, one end of each slider, which is far away from the chute bottom of the chute, penetrates through a notch of the chute and is hinged with a transmission rod, the other ends of the two transmission rods are hinged with a transmission plate together, one end of each transmission plate, which is far away from the buffer plate, is fixedly connected with a, the other end of the second spring is fixedly connected to the support frame.

Preferably, the sliding chute is internally and fixedly connected with a sliding rod, the sliding rod penetrates through the first spring and the sliding block, the first spring is sleeved on the sliding rod, and the sliding rod is in sliding connection with the sliding block.

Preferably, one end of the linkage rod, which is far away from the transmission plate, is fixedly connected with an anti-falling block.

Preferably, a rolling groove is formed in one end, close to the bottom of the sliding groove, of the sliding block, rolling balls are arranged in the rolling groove, one end, far away from the bottom of the rolling groove, of each ball penetrates through a notch of the corresponding rolling groove, and the balls are connected to the bottom of the sliding groove in a rolling mode.

Preferably, the ball diameter of the ball is larger than the groove diameter of the notch of the rolling groove, and the ball is made of stainless steel.

Preferably, the linkage rod is connected with the support frame in a sliding mode, and the second spring is sleeved on the rod wall of the linkage rod.

(III) advantageous effects

Compared with the prior art, the invention provides the high-temperature-resistant special cable for the nuclear island, which has the following beneficial effects:

1. this nuclear power station is with high temperature resistant nuclear island private cable through setting up high temperature resistant layer, insulating layer, endotheca layer and preventing spouting and drench the isolation layer, through high temperature resistant layer and insulating layer greatly improve and stabilized mica's temperature resistant and insulating properties, makes the insulating layer material become network structure by original linear molecular structure, reduces the external diameter increase because of the strip is filled and is caused, improves the cable roundness, has still improved the high temperature resistant of cable simultaneously and has prevented spraying the performance.

2. This nuclear power station is with high temperature resistant nuclear island private cable, through setting up the restrictive coating, the buffer board, the support frame, the spout, the slider, first spring, the transfer line, the driving plate, buffer assembly is constituteed to gangbar and second spring, when the oversheath layer received external force and takes place deformation, atress part's oversheath layer drives buffer board synchronous motion, and then make two sliders be back of the body motion in the spout, compress two first springs simultaneously, first spring takes place deformation and consumes partly pressure, the transmission through transfer line and driving plate when two sliders are back of the body motion, drive gangbar synchronous motion, and then stretch the second spring, further once more consume partly pressure, the protection effect to the cable has been improved.

Drawings

Fig. 1 is a schematic structural diagram of a high-temperature-resistant cable dedicated to a nuclear island for a nuclear power station according to the present invention;

FIG. 2 is a schematic cross-sectional structural view of a spray-proof isolation layer of the high-temperature-resistant cable for the nuclear island for the nuclear power station, which is provided by the invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is an enlarged view of a portion B in fig. 3.

In the figure: the device comprises a conductor 1, a high-temperature-resistant layer 2, an insulating layer 3, an inner sleeve layer 4, a spray-preventing isolation layer 5, an outer sleeve layer 6, a buffer plate 7, a support frame 8, a sliding groove 9, a sliding block 10, a first spring 11, a transmission rod 12, a transmission plate 13, a linkage rod 14, a second spring 15, a sliding rod 16, an anti-falling block 17, a rolling groove 18 and balls 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without any creative effort are within the protection scope of the present invention.

Referring to fig. 1-4, a high temperature resistant cable dedicated for a nuclear island for a nuclear power station includes a conductor 1, a high temperature resistant layer 2 is wrapped outside the conductor 1, an insulating layer 3 is wrapped outside the high temperature resistant layer 2, an inner jacket layer 4 is extruded outside the insulating layer 3, and a spray prevention isolation layer 5 is sleeved outside the inner jacket layer 4;

the high temperature resistant layer 2 specifically comprises: a novel calcined mica refractory tape with a special process is lapped outside the conductor 1;

an insulating layer 3, which is specifically: the SiO2 is taken as a main body, a compact conductor protective shell is sintered in the combustion process, and the compact conductor protective shell adopts a Mev3.0 type high-frequency electron irradiation accelerator of a wiring speed synchronous control technology and a reflection magnet technology, so that the original linear molecular structure of the material is changed into a net structure;

inner jacket layer 4, it specifically is: an extrusion type extrusion packing structure is adopted, so that the increase of the outer diameter caused by strip-shaped packing is reduced, and the roundness of the cable is improved;

the spray-proof isolation layer 5 specifically comprises: adopting a mixture silicon rubber of methyl vinyl silicon rubber and methyl phenyl vinyl silicon rubber, wherein the weight ratio of the methyl vinyl silicon rubber to the methyl phenyl vinyl silicon rubber is 42: 27.

the temperature resistance and the insulating property of mica are greatly improved and stabilized through the high-temperature resistant layer 2 and the insulating layer 3, so that the insulating layer material is changed into a net structure from an original linear molecular structure, the increase of the outer diameter caused by strip-shaped filling is reduced, the roundness of the cable is improved, and the high-temperature resistance and the spraying prevention performance of the cable are also improved.

An outer sheath layer 6 is sleeved outside the spray-proof isolation layer 5, a plurality of buffer mechanisms are arranged on the spray-proof isolation layer 5 and the outer sheath layer 6, the plurality of buffer mechanisms are distributed in a ring shape by taking the spray-proof isolation layer 5 as a center, and each buffer mechanism comprises a plurality of buffer components which are distributed in a straight line;

the buffer component comprises an arc buffer plate 7 and an arc support frame 8, the buffer plate 7 is fixedly connected on the inner side wall of the outer sheath layer 6, the position of the support frame 8 corresponding to the buffer plate 7 is arranged on the outer side wall of the anti-spray isolation layer 5, one side of the buffer plate 7 close to the support frame 8 is provided with a chute 9 with a T-shaped section, sliders 10 with T-shaped sections are symmetrically and slidably connected in the chute 9, the opposite ends of the two sliders 10 are oppositely and symmetrically and fixedly connected with a first spring 11, the other end of the first spring 11 is fixedly connected on the corresponding chute wall of the chute 9, one end of each slider 10 far away from the bottom of the chute 9 penetrates through the notch of the chute 9 to be hinged with a transmission rod 12, the other ends of the two transmission rods 12 are jointly hinged with a transmission plate 13, one end of each transmission plate 13 far away from the buffer plate 7 is, one end fixedly connected with second spring 15 that driving plate 13 is close to support frame 8, the other end fixed connection of second spring 15 is on support frame 8, when oversheath layer 6 receives external force to take place deformation, partial oversheath layer 6 of atress drives buffer board 7 synchronous motion, and then make two sliders 10 do back of the body motion in spout 9, compress two first springs 11 simultaneously, first spring 11 takes place to deform and consumes partly pressure, transmission through transfer line 12 and driving plate 13 when two sliders 10 are back of the body motion, drive gangbar 14 synchronous motion, and then stretch second spring 15, further once more consume partly pressure, the protection effect to the cable has been improved.

A sliding rod 16 is fixedly connected in the sliding groove 9, the sliding rod 16 penetrates through the first spring 11 and the sliding block 10, the first spring 11 is sleeved on the sliding rod 16, and the sliding rod 16 is in sliding connection with the sliding block 10, so that the sliding block 10 moves on the sliding rod 16 more stably, and the sliding block 10 is prevented from being separated from the sliding groove 9.

One end of the linkage rod 14 far away from the transmission plate 13 is fixedly connected with an anti-falling block 17 to prevent the linkage rod 14 from being separated from the support frame 8.

The sliding block 10 is provided with a rolling groove 18 at one end close to the bottom of the sliding groove 9, a rolling ball 19 is arranged in the rolling groove 18, one end, far away from the bottom of the rolling groove 18, of the rolling ball 19 penetrates through a notch of the rolling groove 18, the rolling ball 19 is connected to the bottom of the sliding groove 9 in a rolling mode, the sliding block 10 drives the rolling ball 19 in the rolling groove 18 to roll when moving in the sliding groove 9, and friction resistance of the sliding block 10 when moving in the sliding groove 9 is reduced.

The ball 19 has a larger diameter than the groove of the rolling groove 18, and the ball 19 is made of stainless steel to prevent the ball 19 from slipping out of the rolling groove 18.

The linkage rod 14 is connected with the support frame 8 in a sliding mode, and the second spring 15 is sleeved on the rod wall of the linkage rod 14.

In conclusion, the high-temperature-resistant special cable for the nuclear island for the nuclear power station greatly improves and stabilizes the temperature resistance and the insulating property of mica through the high-temperature-resistant layer 2 and the insulating layer 3, so that the insulating layer material is changed into a net structure from an original linear molecular structure, the increase of the outer diameter caused by strip-shaped filling is reduced, the roundness of the cable is improved, and the high-temperature-resistant and anti-spraying properties of the cable are also improved; when the oversheath layer 6 receives external force to take place the deformation, the oversheath layer 6 of atress part drives buffer board 7 synchronous motion, and then make two sliders 10 do back-to-back motion in spout 9, compress two first springs 11 simultaneously, first spring 11 takes place to deform and consumes partly pressure, two sliders 10 are the transmission through transfer line 12 and driving plate 13 when back-to-back motion, drive the 14 synchronous motion of gangbar, and then stretch second spring 15, further once more consume partly pressure, the protection effect to the cable has been improved.

It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.