Auxiliary mounting device

Abstract

The utility model relates to the technical field of nuclear power equipment, in particular to an auxiliary installation device. The auxiliary mounting device is used for pre-positioning and mounting a sensor at a first positioning point on the outer wall of an inner shell dome of a nuclear power station containment vessel and a second positioning point on the inner wall of an outer shell dome, and comprises a rod main body and a mounting assembly, and the mounting assembly is arranged at one end of the rod main body; the mounting assembly is used for being detachably connected with a connecting assembly for mounting the upper portion of a sensor and allowing the connecting assembly to be mounted at the second positioning point, and the other end of the rod body can vertically point to the first positioning point so as to indicate that the lower portion of the sensor is mounted at the first positioning point. The auxiliary mounting device is beneficial to improving the safety and convenience when the sensor is positioned and mounted on the containment.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power equipment, in particular to an auxiliary installation device. Background Art

[0002] Nuclear power plants need to regularly conduct containment overall pressure tests. During the test, the deformation data of the dome of the inner shell of the containment needs to be monitored. Therefore, sensors for monitoring the deformation of the dome need to be installed on the outer wall of the inner shell dome of the containment and the inner wall of the outer shell dome of the containment. Since the distance between the inner shell dome and the outer shell dome of the containment is about 3-4 meters, the height of the personnel cannot reach the installation height. Therefore, the installation position of the sensor on the containment is usually pre-positioned by building scaffolding, so as to facilitate the subsequent installation of the sensor at the pre-positioned position. However, the inner shell dome and the outer shell dome of the containment are both inclined, which easily makes it inconvenient to build and install the scaffolding, and there are safety risks when personnel use the scaffolding. Utility Model Content

[0003] The main purpose of the utility model is to propose an auxiliary installation device, which aims to solve technical problems such as the difficulty of installation when building a scaffold between the inner shell dome and the outer shell dome of the containment shell when pre-positioning the installation position of the sensor on the containment shell and installing the sensor in subsequent operations, and the safety risks when personnel use the scaffolding to work.

[0004] To achieve the above purpose, the utility model proposes an auxiliary installation device for pre-positioning and installing a sensor at a first positioning point on the outer wall of the inner shell dome of a nuclear power plant containment vessel and a second positioning point on the inner wall of the outer shell dome arranged oppositely, comprising:

[0005] Rod body;

[0006] An installation component is arranged at one end of the rod body, and is used for detachably connecting a connecting component for installing the upper part of the sensor, and for installing the connecting component at the second positioning point. The other end of the rod body can vertically point to the first positioning point to indicate that the lower part of the sensor is installed at the first positioning point.

[0007] In some embodiments, the mounting assembly is provided with a first hook, and the first hook can be hooked on the connecting assembly so that the rod body is suspended on the connecting assembly and is in a vertically extended state.

[0008] In some embodiments, a laser positioning portion is provided at one end of the rod body away from the mounting assembly, and the laser positioning portion can emit a laser point and make the laser point illuminate the second positioning point.

[0009] In some embodiments, a first plug-in portion and a second plug-in portion are respectively provided at both ends of the rod body, the mounting assembly is plugged into the first plug-in portion, and the laser positioning portion is plugged into the second plug-in portion.

[0010] In some embodiments, the rod body is provided with a fixed bracket, and the fixed bracket is provided with a level adjuster, and the level adjuster is used to monitor the verticality of the rod body when it is in a suspended state.

[0011] In some embodiments, the rod body comprises:

[0012] A first connecting rod, wherein the first connecting rod is provided with an internal thread;

[0013] a second connecting rod, the second connecting rod being sleeved in the first connecting rod, the second connecting rod being provided with an external thread;

[0014] The internal thread and the external thread cooperate with each other so that the second connecting rod can rotate inside the first connecting rod to achieve the extension or contraction of the rod body.

[0015] In some embodiments, a motor is disposed in the first connecting rod, and a rotating shaft of the motor is connected to an end of the second connecting rod close to the first connecting rod, so that the motor drives the second connecting rod to rotate in the first connecting rod.

[0016] In some embodiments, the mounting assembly includes a first positioning portion, and the first positioning portion is used to be magnetically connected to the connecting assembly;

[0017] Alternatively, the first positioning portion can be bonded to the connecting component via Velcro.

[0018] In some embodiments, the length L of the rod body satisfies: 1m≤L≤4m.

[0019] In some embodiments, the rod body is a metal structure or the rod body is a carbon fiber structure.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] In the technical solution of the utility model, when the auxiliary installation device is used to pre-position the installation position of the sensor on the inner shell dome and the outer shell dome, first determine the second positioning point on the outer shell dome, and apply a viscous material such as glue on the second positioning point to facilitate the subsequent installation and fixing of the connecting component on the second positioning point, and then install the connecting component on the installation component of the auxiliary installation device. After the connecting component is installed on the installation component, the rod body can be used to push the connecting component upward, so that the connecting component moves in the direction close to the second positioning point, and finally the connecting component is bonded to the second positioning point. After the connecting component is bonded to the second positioning point, the rod body is in a suspended state at this time, and the end of the rod body away from the connecting component is vertically pointed to the inner shell dome. At this time, the vertical projection of the end of the rod body on the inner shell dome is the first positioning point. The first positioning point and the second positioning point are arranged oppositely in the vertical direction, the first positioning point is the lower installation position of the sensor, and the second positioning point is the upper installation position of the sensor. At this point, the auxiliary installation device is used to complete the pre-positioning of the installation position of the sensor on the inner shell dome and the outer shell dome.

[0022] After the auxiliary installation device is used to pre-position the installation position of the sensor on the inner shell dome and the outer shell dome, one end of the sensor can be connected to the installation assembly of the auxiliary installation device, and the sensor can be pushed upward by the rod body so that one end of the sensor is finally connected to the connection assembly to achieve the upper positioning of the sensor. After the upper positioning of the sensor is completed, the other end of the sensor is connected to the first positioning point to achieve the lower positioning of the sensor.

[0023] The auxiliary installation device can not only realize the pre-positioning of the installation position of the sensor on the inner shell dome and the outer shell dome, but also enable the sensor to be vertically arranged between the inner shell dome and the outer shell dome, which meets the construction requirements of the sensor installation in the containment. The sensor can monitor the deformation data of the dome of the inner shell of the containment in real time, which is conducive to recording the test data of the overall pressure test of the containment to ensure the safety of the use of the containment.

[0024] The auxiliary installation device can replace the scaffolding to quickly complete the pre-positioning of the sensor installation position and the installation of the sensor, thereby eliminating the risks of scaffolding erection and the risks of personnel working at heights, and is also beneficial to improving work efficiency and shortening the work cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the overall structure of an auxiliary installation device provided in one embodiment of the utility model;

[0027] Figure 2 A cross-sectional view of the overall structure of an auxiliary installation device provided in one embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a connection assembly provided in one embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the connection relationship between the auxiliary installation device and the connection assembly provided in one embodiment of the utility model;

[0030] Figure 5 A schematic diagram of the connection of an auxiliary installation device in a containment shell provided by an embodiment of the utility model;

[0031] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0032] Description of Figure Numbers:

[0033] 100-rod body;

[0034] 110 - first connecting rod; 120 - second connecting rod; 130 - motor;

[0035] 200-Installation components;

[0036] 210-first hook; 220-first positioning portion;

[0037] 300-connection components;

[0038] 310 - second hook; 320 - second positioning portion;

[0039] 400-Laser positioning unit;

[0040] 500-Fixed bracket;

[0041] 510-Level regulator;

[0042] 600 - inner shell dome;

[0043] 610-first positioning point;

[0044] 700 - housing dome;

[0045] 710-Second positioning point.

[0046] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0050] Nuclear power plants need to regularly conduct containment overall pressure tests. During the test, the deformation data of the dome of the inner shell of the containment needs to be monitored. Therefore, sensors for monitoring the deformation of the dome need to be installed on the outer wall of the inner shell dome of the containment and the inner wall of the outer shell dome of the containment. Since the distance between the inner shell dome and the outer shell dome of the containment is about 3-4 meters, the height of the personnel cannot reach the installation height. Therefore, the installation position of the sensor on the containment is usually pre-positioned by building scaffolding, so as to facilitate the subsequent installation of the sensor at the pre-positioned position. However, the inner shell dome and the outer shell dome of the containment are both inclined, which easily makes it inconvenient to build and install the scaffolding, and there are safety risks when personnel use the scaffolding.

[0051] In order to solve the technical problems such as the difficulty of installing the scaffolding between the inner shell dome 600 and the outer shell dome 700 of the containment when pre-positioning the installation position of the sensor on the containment and installing the sensor in subsequent operations, and the safety risks when personnel use the scaffolding to work, refer to Figures 1 to 6 An embodiment of the utility model provides an auxiliary installation device for pre-positioning and installing a sensor at a first positioning point 610 on the outer wall of an inner shell dome 600 of a nuclear power plant containment vessel and a second positioning point 710 on the inner wall of an outer shell dome 700 arranged opposite thereto. The auxiliary installation device includes a rod body 100 and an installation assembly 200. The installation assembly 200 is arranged at one end of the rod body 100. The installation assembly 200 is used for detachably connecting a connecting assembly 300 for installing the upper part of the sensor, and for installing the connecting assembly 300 at the second positioning point 710. The other end of the rod body 100 can vertically point to the first positioning point 610 to indicate that the lower part of the sensor is installed at the first positioning point 610.

[0052] Specifically, in this embodiment, when the auxiliary installation device is used to pre-position the installation position of the sensor on the inner shell dome 600 and the outer shell dome 700, the second positioning point 710 is first determined on the outer shell dome 700, and a viscous material such as glue is applied to the second positioning point 710, so as to facilitate the subsequent installation and fixing of the connecting component 300 at the second positioning point 710, and then the connecting component 300 is installed on the mounting component 200 of the auxiliary installation device. After the connecting component 300 is installed on the mounting component 200, the rod body 100 can be used to push the connecting component 300 upward, so that the connecting component 300 moves in the direction close to the second positioning point 710, and finally the connecting component 300 is bonded to the second positioning point 710. After the connecting assembly 300 is bonded to the second positioning point 710, the rod body 100 is in a suspended state, and the end of the rod body 100 that is away from the connecting assembly 300 is vertically pointed to the inner shell dome 600. At this time, the vertical projection of the end of the rod body 100 on the inner shell dome 600 is the first positioning point 610. The first positioning point 610 and the second positioning point 710 are arranged opposite to each other in the vertical direction. The first positioning point 610 is the lower installation position of the sensor, and the second positioning point 710 is the upper installation position of the sensor. At this point, the auxiliary installation device is used to complete the pre-positioning of the installation position of the sensor on the inner shell dome 600 and the outer shell dome 700.

[0053] After the auxiliary installation device is used to pre-position the installation position of the sensor on the inner shell dome 600 and the outer shell dome 700, one end of the sensor can be connected to the installation assembly 200 of the auxiliary installation device, and the sensor can be pushed upward by the rod body 100, so that one end of the sensor is finally connected to the connection assembly 300 to achieve the upper positioning of the sensor. After the upper positioning of the sensor is completed, the other end of the sensor is connected to the first positioning point 610 to achieve the lower positioning of the sensor.

[0054] The auxiliary installation device can not only realize the pre-positioning of the installation position of the sensor on the inner shell dome 600 and the outer shell dome 700, but also enable the sensor to be vertically arranged between the inner shell dome 600 and the outer shell dome 700, which meets the construction requirements for the installation of the sensor in the containment. The sensor can monitor the dome deformation data of the inner shell of the containment in real time, which is conducive to recording the test data of the overall pressure test of the containment to ensure the safety of the use of the containment.

[0055] The auxiliary installation device can replace the scaffolding to quickly complete the pre-positioning of the sensor installation position and the installation of the sensor, thereby eliminating the risks of scaffolding erection and the risks of personnel working at heights, and is also beneficial to improving work efficiency and shortening the work cycle.

[0056] In some embodiments, the mounting assembly 200 can be threadedly connected to the rod body 100. When the auxiliary mounting device is required to be used for operation, the rod body 100 and the mounting assembly 200 can be assembled on site. When the auxiliary mounting device is used, the rod body 100 and the mounting assembly 200 can be disassembled on site. The auxiliary mounting device adopts a structured assembly design, which is convenient for installation, carrying, storage and transportation of the auxiliary mounting device.

[0057] Further, Figure 4 Schematic diagram of the connection assembly 300 before the connection assembly 300 is fixed to the second positioning point 710, Figure 6 It is a schematic diagram showing that the mounting assembly 200 is hung on the connecting assembly 300 after the connecting assembly 300 has been fixed at the second positioning point 710 .

[0058] In some embodiments, reference Figures 1 to 6 The mounting assembly 200 is provided with a first hook 210, and the first hook 210 can be hooked to the connecting assembly 300, so that the rod body 100 is suspended from the connecting assembly 300 and is in a vertically extended state. Corresponding to the first hook 210, the connecting assembly 300 can be provided with a second hook 310.

[0059] Specifically, after the connecting component 300 is bonded to the second positioning point 710 using the rod body 100, in order to facilitate the adjustment of the vertical state of the rod body 100, in this embodiment, when the connecting component 300 is firmly bonded at the second positioning point 710, the installation component 200 can be removed from the connecting component 300, and the rod body 100 can be hung on the second hook 310 of the connecting component 300 using the first hook 210, so that the rod body 100 is in a freely suspended state. When the rod body 100 is completely in a vertical state, the first positioning point 610 indicated by the rod body 100 can be aligned with the second positioning point 710 in the vertical direction, which is beneficial to improve the installation accuracy of the sensor and ensure the monitoring accuracy of the sensor.

[0060] In some embodiments, reference Figures 1 to 5 A laser positioning part 400 is provided at one end of the rod body 100 away from the mounting assembly 200 . The laser positioning part 400 can emit a laser point and irradiate the laser point to the second positioning point 710 .

[0061] Specifically, since the vertical state of the sensor will affect the monitoring accuracy of the sensor, and the installation position of the sensor is determined by the first positioning point 610 and the second positioning point 710, in order to improve the installation accuracy of the sensor on the containment shell and ensure the accuracy of the monitoring results, in this embodiment, a laser positioning part 400 is provided at one end of the rod body 100 pointing to the inner shell dome 600. The laser positioning part 400 will emit a laser in the direction of the inner shell dome 600 and form a "cross-shaped" laser point on the outer wall of the inner shell dome 600. The center of the "cross-shaped" laser point is the second positioning point 710.

[0062] The position of the second positioning point 710 is determined on the inner shell dome 600 by the laser positioning unit 400. This is simple, efficient, and accurate in positioning, which can eliminate human errors, improve the installation accuracy of the sensor, and ensure the real-time monitoring effect of the sensor.

[0063] In some embodiments, the laser positioning part 400 can be threadedly connected to one end of the rod body 100. Such a structure facilitates the installation of the laser positioning part 400 on the rod body 100, as well as the removal and replacement of the laser positioning part 400 from the rod body 100.

[0064] In some embodiments, a first plug-in portion and a second plug-in portion are respectively provided at both ends of the rod body 100, the mounting assembly 200 is plugged into the first plug-in portion, and the laser positioning portion 400 is plugged into the second plug-in portion.

[0065] Specifically, referring to the above embodiment, the mounting assembly 200 and the laser positioning part 400 can be connected to the rod body 100 by threading, or can be connected to the rod body 100 by a plug-in part. Exemplarily, for example, one end of the rod body 100 can be provided with a first slot, the other end of the rod body 100 can be provided with a second slot, the mounting assembly 200 can be provided with a first plug-in block, and the laser positioning part 400 can be provided with a second plug-in block. The first plug-in block is configured to be plugged into the first slot so that the mounting assembly 200 is connected to one end of the rod body 100, and the second plug-in block is configured to be plugged into the second slot so that the laser positioning part 400 is connected to the other end of the rod body 100.

[0066] Compared with the threaded connection form, the plug-in form can, on the one hand, reduce the processing difficulty of the auxiliary installation device and improve the processing efficiency of the auxiliary installation device. On the other hand, it is conducive to the assembly of the auxiliary installation device in a limited space, reducing the assembly difficulty of the auxiliary installation device, and the various components of the auxiliary installation device are still firmly connected.

[0067] It is understandable that both ends of the rod body 100 may be provided with plug blocks respectively, and correspondingly, the mounting assembly 200 and the laser positioning part 400 are provided with slots.

[0068] In some embodiments, reference Figures 1 to 5 The rod body 100 is provided with a fixing bracket 500, and the fixing bracket 500 is provided with a leveling regulator 510, and the leveling regulator 510 is used to monitor the verticality of the rod body 100 when it is in a suspended state.

[0069] Specifically, since the rod body 100 may be in a non-vertical state when in a suspended state, in order to ensure that the rod body 100 is in a vertical state, and further to ensure the accuracy of the first positioning point 610 determined by the end of the rod body 100, in the present embodiment, a level adjuster 510 is provided on the rod body 100, and the level adjuster 510 displays the verticality of the rod body 100 in real time. When the level adjuster 510 shows that the rod body 100 has a verticality deviation, the rod body 100 can be manually intervened at this time, and the personnel can adjust the rod body 100 in time, and manually adjust the verticality of the rod body 100 so that the rod body 100 is in a vertical state, thereby facilitating the use of the rod body 100 to determine the first positioning point 610 on the outer wall of the inner shell dome 600, thereby ensuring the installation accuracy of the sensor and ensuring the accuracy of the data of the sensor monitoring the deformation of the inner shell dome 600.

[0070] It should be noted that the level regulator 510 is a conventional device in this field, so the specific structure, working principle, monitoring process, etc. of the level regulator 510 will not be described in detail.

[0071] Furthermore, a connection hole is opened on the fixing bracket 500, and the fixing bracket 500 can be passed through the connection hole and arranged on the rod body 100, and fixedly connected with the rod body 100 by welding.

[0072] In some embodiments, reference Figure 1 to Figure 2 The rod body 100 includes a first connecting rod 110 and a second connecting rod 120. The first connecting rod 110 is provided with an internal thread, and the second connecting rod 120 is sleeved in the first connecting rod 110. The second connecting rod 120 is provided with an external thread. The internal thread and the external thread cooperate so that the second connecting rod 120 can rotate in the first connecting rod 110 to achieve the extension or contraction of the rod body 100.

[0073] Specifically, in order to enable the auxiliary installation device to adapt to the different height differences between the inner shell dome 600 and the outer shell dome 700 of the containment shell, and to facilitate the storage of the auxiliary installation device, in the present embodiment, the rod body 100 of the auxiliary installation device is designed as a retractable structure. When positioning the installation position of the sensor on the outer shell dome 700 and subsequently installing the sensor on the outer shell dome 700, it is necessary to extend the length of the rod body 100. At this time, the second connecting rod 120 can be screwed in the first direction. Since the second connecting rod 120 and the first connecting rod 110 are connected by threads, when the second connecting rod 120 is screwed, the second connecting rod 120 can rotate inside the first connecting rod 110. As the second connecting rod 120 continues to rotate, the second connecting rod 120 continues to extend in a direction away from the first connecting rod 110, thereby extending the length of the rod body 100, so as to facilitate the positioning and installation of the sensor on the outer shell dome 700 using the auxiliary installation device. When the auxiliary installation device is to be stored, the length of the rod body 100 needs to be shortened. At this time, the second connecting rod 120 can be screwed in the opposite direction of the first direction, and the second connecting rod 120 rotates inside the first connecting rod 110. As the second connecting rod 120 continues to rotate, the second connecting rod 120 continues to retract in the direction close to the first connecting rod 110, thereby shortening the length of the rod body 100, so as to shorten the length of the auxiliary installation device, reduce the volume of the auxiliary installation device, and improve the portability of the auxiliary installation device.

[0074] The first connecting rod 110 and the second connecting rod 120 are connected together by threads. The connection method is simple and easy for personnel to manually screw. The connection is stable and reliable, which is conducive to personnel completing operations such as high-altitude positioning and installation of the sensor without climbing.

[0075] In some embodiments, referring to the above embodiments, after the connecting assembly 300 is positioned at the second positioning point 710 by the telescopic rod body 100, the rod body 100 can also be telescoped again so that the lower end of the rod body 100 extends to the outer wall of the inner shell dome 600, and the laser positioning part 400 provided at the lower end of the rod body 100 can accurately determine the first positioning point 610 on the outer wall of the inner shell dome 600.

[0076] In some embodiments, reference Figure 1 to Figure 2 A motor 130 is disposed in the first connecting rod 110 , and a rotating shaft of the motor 130 is connected to an end of the second connecting rod 120 close to the first connecting rod 110 , so that the motor 130 drives the second connecting rod 120 to rotate in the first connecting rod 110 .

[0077] Specifically, in order to improve the automation level of the auxiliary installation device, in this embodiment, the second connecting rod 120 can be driven by the motor 130 to rotate in the first connecting rod 110, instead of manually screwing the second connecting rod 120, to achieve the extension or contraction of the rod body 100. Exemplarily, for example, a first control button and a second control button can be provided at the gripping portion of the rod body 100, and the first control button and the second control button are both connected to the motor 130. The first control button and the second control button can control the forward and reverse rotation of the motor 130, thereby controlling the extension or contraction of the rod body 100. When the extension of the rod body 100 needs to be controlled, the first control button can be long pressed, at which time the first control button will control the forward rotation of the motor 130, and the second connecting rod 120 will continue to extend in the direction away from the first connecting rod 110, thereby extending the length of the rod body 100. When the rod body 100 needs to be shortened, the second control button can be long pressed, and the second control button will control the motor 130 to reverse, and the second connecting rod 120 will continue to retract toward the first connecting rod 110, thereby shortening the length of the rod body 100.

[0078] By controlling the length change of the rod body 100 through the motor 130, the operating steps can be simplified and the automation level of the auxiliary installation device can be improved. The start or stop of the motor 130 can be controlled by the first control button and the second control button, and it can be stopped at any time, so that the length change of the rod body 100 can be freely adjusted according to needs.

[0079] In some embodiments, reference Figures 1 to 4 , the installation component 200 includes a first positioning portion 220, and the first positioning portion 220 is used to be magnetically connected to the connecting component 300. Alternatively, the first positioning portion 220 can be bonded to the connecting component 300 through Velcro. Corresponding to the first positioning portion 220, the connecting component 300 is provided with a second positioning portion 320. When the installation component 200 and the connecting component 300 are connected by magnetic attraction, the magnetism of the first positioning portion 220 and the second positioning portion 320 are opposite. For example, if the first positioning portion 220 is a positive magnetic pole, the second positioning portion 320 is a negative magnetic pole, and if the first positioning portion 220 is a negative magnetic pole, the second positioning portion 320 is a positive magnetic pole. In addition, when the installation component 200 and the connecting component 300 are connected by magnetic attraction, one of the first positioning portion 220 and the second positioning portion 320 can be a magnet and the other can be a magnetic metal. The installation component 200 can still be connected to the connecting component 300 by using the magnetic connection between the magnet and the magnetic metal.

[0080] Specifically, in this embodiment, when it is necessary to install the connecting component 300 at the second positioning point 710 on the inner wall of the outer shell dome 700, the connecting component 300 can be first installed on the mounting component 200 of the auxiliary mounting device through the first positioning portion 220 and the second positioning portion 320. Relying on the auxiliary mounting device, the connecting component 300 can be "sent" to the second positioning point 710 on the inner wall of the outer shell dome 700 through the extension rod body 100. For example, the second positioning point 710 can be coated with glue, and the connecting component 300 can be pushed against the glue using the auxiliary mounting device.

[0081] After the connecting component 300 is firmly bonded at the second positioning point 710 and before the sensor is installed on the connecting component 300, it is necessary to separate the connecting component 300 and the auxiliary installation device. Since the connecting component 300 and the auxiliary installation device are mainly connected by the first positioning portion 220 and the second positioning portion 320, the connection method between the first positioning portion 220 and the second positioning portion 320 is designed to be a magnetic connection, so that the acting force between the auxiliary installation device and the connecting component 300 is smaller than the bonding force between the connecting component 300 and the outer shell dome 700, so that when the auxiliary installation device is pulled off the connecting component 300, it can effectively prevent the connecting component 300 from falling off the outer shell dome 700, so as to ensure that the connecting component 300 can provide an installation basis for the subsequent installation of the sensor on the outer shell dome 700.

[0082] In some embodiments, the first positioning portion 220 and the second positioning portion 320 may also be Velcro. With such a structure, the bonding force between the first positioning portion 220 and the second positioning portion 320 is smaller than the bonding force between the connecting component 300 and the outer shell dome 700. When the auxiliary installation device is pulled off the connecting component 300, the connecting component 300 can still be firmly bonded to the outer shell dome 700 without affecting the subsequent installation of the sensor on the connecting component 300.

[0083] In some embodiments, the length L of the rod body 100 satisfies: 1 m≤L≤4 m. The value of L can be 1 m, 1.5 m, 2 m, 2.5 m, 3 m, 3.5 m, 4 m, etc.

[0084] Specifically, in this embodiment, specific values ​​of the length variation range of the rod body 100 are provided, wherein when the length L of the rod body 100 is 1m, it represents the minimum length of the rod body 100, i.e., the rod body 100 is completely in a retracted state at this time, and when the length L of the rod body 100 is 4m, it represents the maximum length of the rod body 100, i.e., the rod body 100 is completely in an extended state at this time. The length of the rod body 100 can be freely adjusted within 1m-4m (including the end value) to adapt to different height distances between the inner shell dome 600 and the outer shell dome 700 of the containment.

[0085] It should be noted that the overall length of the auxiliary installation device is approximately equal to the length of the rod body 100 , and therefore, the overall length of the auxiliary installation device is between 1 m and 4 m (including the end values).

[0086] In some embodiments, the rod body 100 is a metal structure or the rod body 100 is a carbon fiber structure.

[0087] Specifically, in order to facilitate people to hold the auxiliary installation device, in this embodiment, the rod body 100 can be a lightweight material structure such as a metal structure or a carbon fiber structure. When the rod body 100 is a metal structure, metal materials such as stainless steel are preferred. This can improve the anti-corrosion ability of the rod body 100, extend the service life of the rod body 100, and save the manufacturing cost of the rod body 100.

[0088] It should be noted that other contents of the auxiliary installation device disclosed in the present utility model can be found in the prior art and will not be described in detail here.

[0089] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Auxiliary installation device, used for pre-positioning and installing the sensor at a first positioning point on the outer wall of the inner shell dome of the nuclear power plant containment and a second positioning point on the inner wall of the outer shell dome arranged oppositely, It is characterized in that include: Rod body; An installation component is arranged at one end of the rod body, and is used for detachably connecting a connecting component for installing the upper part of the sensor, and for installing the connecting component at the second positioning point. The other end of the rod body can vertically point to the first positioning point to indicate that the lower part of the sensor is installed at the first positioning point.

2. The auxiliary installation device according to claim 1, It is characterized in that The mounting assembly is provided with a first hook, and the first hook can be hooked on the connecting assembly so that the rod body is suspended on the connecting assembly and is in a vertically extended state.

3. The auxiliary installation device according to claim 1, It is characterized in that A laser positioning part is arranged at one end of the rod body away from the mounting assembly, and the laser positioning part can emit a laser point and make the laser point irradiate the second positioning point.

4. The auxiliary installation device according to claim 3, It is characterized in that A first plug-in portion and a second plug-in portion are respectively provided at two ends of the rod body, the mounting assembly is plugged into the first plug-in portion, and the laser positioning portion is plugged into the second plug-in portion.

5. The auxiliary installation device according to claim 1, It is characterized in that The rod body is provided with a fixed bracket, and the fixed bracket is provided with a level adjuster, and the level adjuster is used to monitor the verticality of the rod body when it is in a suspended state.

6. The auxiliary installation device according to claim 1, It is characterized in that The rod body comprises: A first connecting rod, wherein the first connecting rod is provided with an internal thread; a second connecting rod, the second connecting rod being sleeved in the first connecting rod, the second connecting rod being provided with an external thread; The internal thread and the external thread cooperate with each other so that the second connecting rod can rotate inside the first connecting rod to achieve the extension or contraction of the rod body.

7. The auxiliary installation device according to claim 6, It is characterized in that A motor is disposed in the first connecting rod, and a rotating shaft of the motor is connected to an end of the second connecting rod close to the first connecting rod, so that the motor drives the second connecting rod to rotate in the first connecting rod.

8. The auxiliary installation device according to claim 1, It is characterized in that The mounting assembly includes a first positioning portion, and the first positioning portion is used for magnetically connecting with the connecting assembly; Alternatively, the first positioning portion can be bonded to the connecting component via Velcro.

9. The auxiliary installation device according to claim 1, It is characterized in that The length L of the rod body satisfies: 1m≤L≤4m.

10. The auxiliary installation device according to any one of claims 1 to 9, It is characterized in that The rod body is a metal structure or a carbon fiber structure.

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