Maintenance shed for exciter of nuclear power plant

Abstract

The utility model relates to a nuclear power plant exciter overhaul and maintenance shed which comprises a frame and an isolation cover. The frame defines a maintenance space for placing an exciter, and comprises two keel groups, each keel group comprises at least one upper keel and at least one lower keel, each upper keel is in an L-shaped bent shape, and each lower keel is in an L-shaped bent shape. The upper keels of the two keel sets are detachably connected to form a semi-surrounding structure with an upward opening, and each lower keel is detachably connected with the free end of the upper keel in the same keel set so that the upper keels can be lifted to expand the maintenance space. The isolation cover is arranged on the frame in a covering mode so that the maintenance space can be isolated from the outside. According to the utility model, the manufacturing cost can be saved, the dismounting process is simplified, and the isolation effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of exciter repair and maintenance, in particular to an exciter repair and maintenance shed for a nuclear power plant. Background Art

[0002] Nuclear power plants are generally located in coastal areas, where the ambient humidity is high all year round, and the ambient air is highly corrosive due to the influence of seawater. During shutdown and maintenance, the exciter will be exposed to the ambient air as a whole after dismantling and removal. Its insulation performance will drop rapidly due to the influence of ambient humidity and air, and the surface is prone to rust. Therefore, during the overhaul, the exciter needs to be maintained after dismantling and disassembling to prevent the stator poles and armature of the exciter from getting damp. The exciter maintenance is a first-level foreign body protection area, and the exciter storage area needs to be isolated and closed to prevent foreign objects from entering.

[0003] The existing magnetic machine inspection and maintenance method is to build a frame by setting up scaffolding and laying plastic sheeting outside the frame to form a temporary maintenance shed. However, this maintenance method requires a lot of manpower and material resources to be built and disassembled during each overhaul, which is a large workload. In addition, there is a high operational safety risk during the construction process. At the same time, it is difficult to purchase such a large-sized overall plastic sheet, and multiple pieces need to be spliced ​​together, which not only wastes manpower and material resources, but also easily leads to the risk of moisture or foreign matter entering the splicing point, resulting in maintenance failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a maintenance shed for the exciter of a nuclear power plant.

[0005] The utility model adopts the following technical solutions:

[0006] Construct a nuclear power plant exciter maintenance shed, including:

[0007] A frame defining a maintenance space for placing an exciter, comprising two keel groups, each of the keel groups comprising at least one upper keel and at least one lower keel, each of the upper keels being bent in an L-shape, and the upper keels of the two keel groups being detachably connected to form a semi-enclosed structure with an opening facing upward, and each of the lower keels being detachably connected to a free end of the upper keel in the same keel group to lift the upper keel to expand the maintenance space; and

[0008] An isolation cover is arranged on the frame to isolate the maintenance space from the outside.

[0009] In some embodiments, the upper keel includes at least two horizontal rods, at least two first vertical rods, at least two support rods, and at least one first connecting rod, wherein the at least two horizontal rods are parallel, spaced apart, and horizontally arranged, and the at least two first vertical rods are parallel and vertically arranged;

[0010] One end of the horizontal rod is rotatably connected to one end of the first vertical rod, the first connecting rod is horizontally arranged and its two ends are respectively connected to one end of two adjacent first vertical rods, and the supporting rod is inclined and its two ends are respectively rotatably and / or detachably connected to the horizontal rod and the first vertical rod.

[0011] In some embodiments, the lower keel includes at least two second vertical rods and at least one second connecting rod, the at least two second vertical rods are parallel and vertically arranged, and the second connecting rod is horizontally arranged with two adjacent second vertical rods connected at both ends.

[0012] In some embodiments, the other ends of the horizontal rods of the two keel groups are detachably connected through a first connecting assembly, and a first assembly hole is provided on the other ends of the horizontal rods;

[0013] The first connecting component includes a connecting plate, a first connecting hook and a first rotating member, one end of the connecting plate is detachably connected to the other end of the horizontal rod of one of the keel groups, and the other end of the connecting plate is formed with a second assembly hole corresponding to the first assembly hole, the first connecting hook is detachably inserted into the first assembly hole and the second assembly hole of the horizontal rod of another keel group, and one end is provided with a bending portion, and the other end is detachably connected to the first rotating member.

[0014] In some embodiments, the upper keel further includes at least one third connecting rod, which is horizontally arranged and respectively connects the other ends of at least two adjacent first vertical rods;

[0015] The lower keel further comprises at least one fourth connecting rod, which is horizontally arranged and respectively connects one end of at least two adjacent second vertical rods;

[0016] At least one third assembly hole is formed on the third connecting rod, and at least one fourth assembly hole corresponding to the third assembly hole is formed on the fourth connecting rod;

[0017] The third connecting rod and the fourth connecting rod are detachably connected via a second connecting assembly, and the second connecting assembly includes a second connecting hook and a second rotating member, the second connecting hook is detachably inserted into the third assembly hole and the fourth assembly hole, and has a bending portion at one end and is detachably connected to the second rotating member at the other end.

[0018] In some embodiments, each of the keel groups includes at least two upper keels, and two adjacent upper keels in the same keel group are rotatably connected via at least one hinge structure.

[0019] In some embodiments, each of the keel groups includes at least two lower keels, and two adjacent lower keels in the same keel group are rotatably connected via at least one hinge structure.

[0020] In some embodiments, the horizontal rod is rotatably connected to the first vertical rod via a rotating connector, and the rotating connector is L-shaped, with one end fixed to one end of the first vertical rod and the other end rotatably connected to one end of the horizontal rod.

[0021] In some embodiments, the isolation cover includes a cover body disposed on the frame, and the cover body is provided with at least one transparent observation window.

[0022] In some embodiments, the isolation cover includes a cover body disposed on the frame and at least one access door, the cover body is formed with at least one access door, and the access door is detachably disposed on the cover body to cover the access door.

[0023] The utility model has the following advantages:

[0024] The utility model constructs a frame with two keel groups, and each keel group is set as a combination of an upper keel and a lower keel, so that the frame is formed by four structures, which simplifies the structure of the frame, saves manufacturing costs, makes assembly very simple, reduces the investment of manpower and material resources, and reduces the safety risks in the assembly process;

[0025] At the same time, by setting an integral isolation cover, the entire maintenance space is covered to ensure the isolation effect and avoid the entry of moisture caused by the splicing and falling of multiple pieces of cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a nuclear power plant exciter maintenance shed in one embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the framework in FIG.

[0029] Figure 3 yes Figure 2 A partial enlarged view of the first connection component in FIG.

[0030] Figure 4 yes Figure 2 A partial enlarged view of the rotating connection in FIG. DETAILED DESCRIPTION

[0031] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the directions or positional relationships shown in some of the drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0033] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0034] Figure 1 and Figure 2 The present invention shows a nuclear power plant exciter maintenance shed 1 in one embodiment of the utility model, which is used to place the exciter to isolate and seal it from the external environment to prevent foreign objects (such as moisture and dust) from entering. The nuclear power plant exciter maintenance shed 1 includes a frame 10 and an isolation cover 20. The frame 10 defines a maintenance space 15 for placing the exciter. The isolation cover 20 is arranged on the frame 10 to isolate the maintenance space 15 from the outside to form a relatively closed area for the exciter to be repaired and maintained, so as to prevent foreign objects (such as moisture and dust) from entering during the repair and maintenance, resulting in maintenance failure.

[0035] Specifically, the frame 10 includes two keel groups, each of which includes at least one upper keel 11 and at least one lower keel 12. The two keel groups define half of the frame 10 respectively, and the two are detachably connected to form a whole frame 10.

[0036] Each upper keel 11 is L-shaped, and the upper keels 11 between the two keel groups are detachably connected to form a semi-enclosed structure with an opening facing upward, defining the top of the frame 10, and realizing the detachable connection of the two keel groups. The lower keels 12 of each keel group are detachably connected to the free ends of the upper keels 11 in the same keel group, defining the side of the frame 10, thereby raising the height of the upper keel 11 to expand the height of the maintenance space 15, and the detachability of the two can reduce the space occupied after disassembly, which is convenient for storage.

[0037] It should be understood that, since the upper keels 11 are all L-shaped, the "semi-enclosed structure with an opening facing upward" is similar to a cubic structure with a bottom and two opposite side surfaces penetrated, and the vertical cross section is similar to an inverted concave shape.

[0038] like Figure 2 As shown, in some embodiments, the upper keel 11 includes at least two horizontal rods 111, at least two first vertical rods 112, at least two support rods 113, and at least one first connecting rod 114. The horizontal rods 111 are parallel, spaced and horizontally arranged, and the first vertical rods 112 are parallel and vertically arranged.

[0039] Specifically, the first end of the horizontal rod 111 is rotatably connected to the first end of the first vertical rod 112. The support rod 113 is tilted, and the two ends are respectively connected to the horizontal rod 111 and the first vertical rod 112 rotatably and / or detachably, so that the horizontal rod 111 and the first vertical rod 112 have at least two states: a folded state and a working state. When the horizontal rod 111 and the first vertical rod 112 are in the folded state, the support rod 113 is removed from the horizontal rod 111 and the first vertical rod 112, or is adjacent to the horizontal rod 111 and the first vertical rod 112. When the horizontal rod 111 and the first vertical rod 112 are in the working state, the setting of the support rod 113 makes the two be arranged at a certain angle. The first connecting rod 114 is horizontally arranged, and the two ends are respectively connected to the first ends of two adjacent first vertical rods 112, that is, the first connecting rod 114 is horizontally arranged at the connection between the horizontal rod 111 and the first vertical rod 112.

[0040] In this embodiment, connecting holes are respectively provided at both ends of the support rod 113, and connecting holes are also respectively provided at corresponding positions of the horizontal rod 111 and the first vertical rod 112. The two ends of the support rod 113 are penetrated through the connecting holes by bolts, so as to realize the detachable connection between the support rod 113 and the horizontal rod 111 and the first vertical rod 112 respectively, and the setting positions of the connecting holes on the horizontal rod 111 and the first vertical rod 112 are such that when they are in working state, the angle between the horizontal rod 111 and the first vertical rod 112 is a right angle.

[0041] In some other optional embodiments, the support rod 113 may also be rotatably connected to one of the horizontal rod 111 and the first vertical rod 112 at one end, and detachably connected to the other one at the other end.

[0042] In some other optional embodiments, the support rod 113 can also be arranged so that when the horizontal rod 111 and the first vertical rod 112 are in working condition, the angle between the two is less than or greater than 90°, as long as it does not affect the storage of the exciter and the covering of the isolation cover 20.

[0043] In some embodiments, each keel group includes at least two upper keels 11, and two adjacent upper keels 11 in the same keel group are rotatably connected via at least one hinge structure.

[0044] In this embodiment, each keel group includes two upper keels 11, and each upper keel 11 includes three first vertical rods 112 and two first connecting rods 114. The three first vertical rods 112 are arranged in parallel and spaced apart, and the two first connecting rods 114 respectively connect the upper ends of two adjacent first vertical rods 112. The two upper keels 11 are arranged adjacent to each other side by side, and one first vertical rod 112 in each of the two upper keels 11 is adjacent to each other. The two adjacent first vertical rods 112 are rotatably connected by providing a hinge structure at the top and bottom, thereby simplifying the assembly steps and reducing the size of the nuclear power plant exciter maintenance shed 1 after disassembly.

[0045] Further, one of the upper keels 11 includes three horizontal rods 111 and three support rods 113, the first ends of the three horizontal rods 111 are rotatably connected to one ends of the three first vertical rods 112, and the two ends of the three support rods 113 are detachably connected to the three horizontal rods 111 and the three first vertical rods 112. Another upper keel 11 includes two horizontal rods 111 and two support rods 113, wherein the remaining two first vertical rods 112 that are not connected to the first vertical rods 112 of the other upper keel 11 through the hinge structure are rotatably connected to the two horizontal rods 111, and the two support rods 113 are respectively arranged between the two horizontal rods 111 and the two first vertical rods 112. Such a structure can reduce the manufacturing cost of the upper keel 11.

[0046] In some other optional embodiments, the two upper keels 11 may also be arranged to have the same structure, that is, three horizontal rods 111 and three supporting rods 113 are arranged on each of them.

[0047] In some other optional embodiments, when the number of horizontal rods 111 of the two upper keels 11 is three, the two upper keels 11 can be rotatably connected by providing at least one hinge structure between two adjacent horizontal rods 111. At this time, the number of the first vertical rods 112 of the two upper keels 11 can be two for one and three for the other, and the number of support rods 113 is also adjusted accordingly.

[0048] In some other optional embodiments, the number of the horizontal rods 111, the first vertical rods 112 and the support rods 113 of each upper keel 11 can also be two, four, five or more. This embodiment is only an example of one possibility, and it needs to be flexibly set according to the site conditions and the size of the required maintenance space 15. Similarly, each keel group can also include three, four or more upper keels 11, and the number of horizontal rods 111, first vertical rods 112 and support rods 113 of different upper keels 11 in the same keel group can be the same, partially the same, or completely different.

[0049] In some other optional embodiments, three, four or more hinge structures may be provided between the two first vertical rods 112 , or only one hinge structure may be provided.

[0050] In some embodiments, the upper keel 11 further includes at least one third connecting rod 115 , and the third connecting rod 115 is respectively connected to the second ends of at least two adjacent first vertical rods 112 , so as to improve the stability of the upper keel 11 and enhance its supporting strength.

[0051] In this embodiment, each upper keel 11 includes a third connecting rod 115 , and the third connecting rod 115 is respectively connected to the second ends of the three first verticals 112 .

[0052] In some other optional embodiments, each upper keel 11 may also include two third connecting rods 115 ("two" is only based on the situation where three first vertical rods 112 are set in this embodiment), and the second ends of any two adjacent first vertical rods 112 are respectively connected to the two ends of a third connecting rod 115.

[0053] In some other optional embodiments, the upper keel 11 may further include at least one fourth connecting rod (not shown in the figure), and the fourth connecting rod is respectively connected to the second ends of at least two adjacent horizontal rods 111.

[0054] Read also Figure 4 In some embodiments, the upper keel 11 further includes at least two rotating connectors 116 , and each horizontal rod 111 is rotatably connected to the first vertical rod 112 via the rotating connector 116 .

[0055] Specifically, the rotating connecting member 116 is L-shaped, one end of which is fixed to the first end of the first vertical rod 112 , and the other end is rotatably connected to the first end of the horizontal rod 111 , thereby realizing the rotating connection between the horizontal rod 111 and the first vertical rod 112 .

[0056] In this embodiment, one end of the rotating connector 116 and the first end of the horizontal rod 111 are both provided with a rotating hole, and the rotating connection between the two is achieved by simultaneously passing a vertical rotating shaft through the rotating holes of the rotating connector 116 and the horizontal rod 111.

[0057] In some other optional embodiments, the rotatable connector 116 may be fixed to the horizontal rod 111 at one end and rotatably connected to the first vertical rod 112 at the other end.

[0058] like Figure 3As shown, in some embodiments, the frame 10 further includes at least two first connection components 13 (only one is shown in the figure), and the upper keels 11 of the two keel groups are detachably connected through the first connection components 13. The second ends of the horizontal rods 111 of the two upper keels 11 are detachably connected through the first connection components 13 respectively.

[0059] Taking two corresponding detachably connected horizontal rods 111 in two keel groups as an example, one of the horizontal rods 111 in one of the keel groups is defined as the first horizontal rod, and the corresponding detachably connected horizontal rod 111 in the other keel group is defined as the second horizontal rod, then:

[0060] Specifically, the second end of the first horizontal rod and / or the second horizontal rod is penetrated with a first assembly hole (not shown in the figure), and the first connecting assembly 13 includes a connecting plate 131, a first connecting hook 132 and a first rotating member 133. The connecting plate 131 is arranged in a longitudinal plate shape, and its two ends are respectively connected to the first horizontal rod and the second horizontal rod, and one end thereof is detachably connected to one of the first horizontal rod and the second horizontal rod, and the other end is formed with a second assembly hole (not shown in the figure) corresponding to the first assembly hole. The first connecting hook 132 is arranged in a longitudinal shape, and one end thereof has a bending portion (not shown in the figure) for being simultaneously penetrated in the first assembly hole and the second assembly hole. The first rotating member 133 is detachably connected to the other end of the first connecting hook 132 by rotation, thereby realizing the detachable connection between the first horizontal rod and the second horizontal rod.

[0061] It should be understood that the first connecting component 13 can use existing technologies such as hooks to achieve the above effects.

[0062] In some other optional embodiments, when the upper keel 11 is provided with a fourth connecting rod, the upper keels 11 of the two keel groups can also be detachably connected by the fourth connecting rod, so as to realize the detachable connection of the two keel groups. For example, the first connecting assembly 13 is not provided with a connecting plate 131, and the first connecting hook 132 is simultaneously inserted into the corresponding two fourth connecting rods, and the first rotating member 133 is detachably provided at the other end of the first connecting hook 132, so as to realize the detachable connection of the upper keels 11 of the two keel groups.

[0063] For example Figure 2As shown, in some embodiments, the lower keel 12 includes at least two second vertical rods 121 and at least one second connecting rod 122. The second vertical rods 121 are parallel to each other and vertically arranged, and are detachably connected to the upper keel 11, thereby realizing the detachable connection between the upper keel 11 and the lower keel 12. The second connecting rod 122 is horizontally arranged, and the two ends are respectively connected to two adjacent second vertical rods 121, so as to connect the lower keel 12 to form an integral structure, thereby improving the structural strength of the frame 10.

[0064] In some embodiments, each keel group includes at least two lower keels 12, and two adjacent lower keels 12 in the same keel group are rotatably connected via at least one hinge structure.

[0065] In this embodiment, each keel group includes two lower keels 12, and each lower keel 12 includes three second vertical rods 121 and two second connecting rods 122. The three second vertical rods 121 are arranged in parallel and spaced apart, and the two second connecting rods 122 respectively connect two adjacent second vertical rods 121 (in this embodiment, they are located near the lower end portion, and in other embodiments, they may also be connected to other positions such as the middle position).

[0066] The two lower keels 12 are arranged side by side adjacent to each other, and a second vertical rod 121 is adjacent to each other in each of the two lower keels 12. The two adjacent second vertical rods 121 are rotatably connected by respectively setting a hinge structure at the top and the bottom, thereby simplifying the assembly steps and reducing the size of the nuclear power plant exciter maintenance shed 1 after disassembly.

[0067] In some other optional embodiments, the number of the second vertical rods 121 and the second connecting rods 122 of each lower keel 12 can also be two, three, four, five, etc. This embodiment is only an example of one possibility, and it needs to be flexibly set according to the site conditions and the size of the required maintenance space 15, and needs to correspond to the setting of the upper keel 11. Similarly, each keel group can also include three, four, etc. multiple lower keels 12, and the number of second vertical rods 121 and second connecting rods 122 of different lower keels 12 in the same keel group can be the same, partially the same, or completely different.

[0068] In some other optional embodiments, three, four or more hinge structures may be provided between the two adjacent second vertical rods 121 , or only one hinge structure may be provided.

[0069] In some embodiments, the lower keel 12 further includes at least one fourth connecting rod 123 , which is horizontally disposed and respectively connects the upper ends of at least two adjacent second vertical rods 121 .

[0070] In this embodiment, each lower keel 12 includes a fourth connecting rod 123 , and the fourth connecting rod 123 is respectively connected to the upper ends of the three second vertical rods 121 .

[0071] In some other optional embodiments, each lower keel 12 may also be provided with two fourth connecting rods 123 (the number "two" refers to the case of three second vertical rods 121 in this embodiment), and the two ends of each fourth connecting rod 123 are respectively connected to the upper ends of two adjacent second vertical rods 121.

[0072] In some embodiments, at least one third assembly hole (not shown in the figure) is formed on the third connecting rod 115, and at least one fourth assembly hole (not shown in the figure) is also formed on the fourth connecting rod 123, and the third assembly hole and the fourth assembly hole are arranged correspondingly.

[0073] The frame 10 further includes at least one second connecting assembly 14 , through which the corresponding third connecting rod 115 and fourth connecting rod 123 in the same keel group are detachably connected, thereby realizing a detachable connection between the upper keel 11 and the lower keel 12 .

[0074] Specifically, the second connecting assembly 14 includes a second connecting hook and a second rotating member (not shown in the figure). The second connecting hook is arranged in a longitudinal direction and is detachably inserted into the corresponding third assembly hole and fourth assembly hole, and a bending portion is arranged at one end. The second rotating member is detachably connected to the other end of the second connecting hook by rotating.

[0075] It should be understood that the second connecting component 14 can use existing technologies such as hooks to achieve the above effects.

[0076] In some other optional embodiments, the third connecting rod 115 and the fourth connecting rod 123 may not be provided. By providing the first connecting component 13 at the second end of the first vertical rod 112 and the first end of the second vertical rod 121, the upper keel 11 and the lower keel 12 can be detachably connected.

[0077] The arrangement of the first connecting assembly 13 and the second connecting assembly 14 makes it very easy to disassemble and assemble the upper keel 11 and the lower keel 12, and to disassemble and assemble the upper keels 11 of the two keel groups, which can be completed by simply rotating the first rotating member 133 and the second rotating member, thereby saving the assembly time of the frame 10.

[0078] In some other optional embodiments, the first connecting component 13 and the second connecting component 14 may not be provided, and a detachable connection may be achieved by providing a connecting plate and punching holes to provide bolts for bolt connection.

[0079] It should be understood that the horizontal rod 111, the first vertical rod 112, the support rod 113, the first connecting rod 114, the third connecting rod 115, the second vertical rod 121, the second connecting rod 122, and the fourth connecting rod 123 are all hollow stainless steel rod-shaped structures with a square cross section to reduce weight and facilitate disassembly and transportation. In some other optional embodiments, it can also be selected to be a hollow rod-shaped structure with a triangular or circular cross section, or a solid rod-shaped structure.

[0080] In some embodiments, the shape of the isolation cover 20 is adapted to the shape defined by the frame 10. In this embodiment, they are all in a cubic shape. The isolation cover 20 includes a cover body 21 and an entry and exit door. Among them, the cover body 21 is covered on the frame 10 as the main isolation structure, and an entrance and exit 212 is formed. The entrance and exit door (not shown in the figure) is detachably arranged on the entrance and exit 212, which is used to achieve complete isolation of the isolation cover 20 and is used for the entry and exit of personnel.

[0081] In this embodiment, the door and the cover body 21 are detachably connected by Velcro to facilitate quick opening and closing of the door and reduce moisture entry. In other optional embodiments, the two can also be detachably connected by a zipper structure.

[0082] In this embodiment, the entrance 212 on the cover body 21 is formed on at least one of the two sides where the first vertical rod 112 and the second vertical rod 121 are not provided.

[0083] In some embodiments, the cover body 21 is further provided with at least one transparent observation window 211 for observing the maintenance status of the exciter.

[0084] It should be understood that the transparent observation window 211 can be formed by providing an observation hole on the cover body 21 and providing a transparent material cover on the observation hole. Alternatively, part of the cover body 21 can be directly provided with a transparent material, which is not limited here.

[0085] In this embodiment, the observation windows 211 are formed at two opposite sides where no access door is provided.

[0086] It should be understood that the isolation cover 20 can be made of existing one-piece Kevlar cloth to ensure better fire resistance, tear resistance and puncture resistance.

[0087] During actual use, if the exciter needs to be repaired and maintained, first the upper keel 11 folded together by the hinge structure needs to be unfolded, and the lower keel 12 folded together by the hinge structure needs to be unfolded.

[0088] Furthermore, the upper keel 11 and the lower keel 12 are connected and installed through the second connecting component 14 to form a whole keel group, and the upper keels 11 of the two keel groups are connected and installed through the first connecting component 13 to form a frame 10.

[0089] Furthermore, the frame 10 is moved to the location where the exciter is located, and the exciter is located in the maintenance space 15 .

[0090] Furthermore, the isolation cover 20 is placed on the frame 10 to complete the installation.

[0091] When disassembly is required, it can be realized by simply following the reverse steps of the above steps, which is very simple to operate and saves manpower and material resources. The isolation cover 20 is an integrated structure, which avoids the situation of splicing and separation and foreign matter entering. At the same time, the disassembled structure occupies less space and is easy to store.

[0092] The nuclear power plant exciter maintenance shed 1 is also convenient for hoisting the exciter. When the exciter needs to be hoisted, only the isolation cover 20 needs to be removed and the entire transport frame 10 can be used without complete disassembly.

[0093] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A nuclear power plant exciter maintenance shed, characterized in that: include: A frame (10) defines a maintenance space (15) for placing an exciter, comprising two keel groups, each of which comprises at least one upper keel (11) and at least one lower keel (12), each of which is bent in an L-shape, and the upper keels (11) of the two keel groups are detachably connected to form a semi-enclosed structure with an opening facing upward, and each of the lower keels (12) is detachably connected to a free end of the upper keel (11) in the same keel group to raise the upper keel (11) to expand the maintenance space (15); and An isolation cover (20) is arranged on the frame (10) to isolate the maintenance space (15) from the outside.

2. The nuclear power plant exciter maintenance shed according to claim 1, characterized in that: The upper keel (11) comprises at least two horizontal rods (111), at least two first vertical rods (112), at least two support rods (113) and at least one first connecting rod (114), wherein the at least two horizontal rods (111) are parallel, spaced apart and horizontally arranged, and the at least two first vertical rods (112) are parallel and vertically arranged; One end of the horizontal rod (111) is rotatably connected to one end of the first vertical rod (112); the first connecting rod (114) is horizontally arranged and its two ends are respectively connected to one end of two adjacent first vertical rods (112); the supporting rod (113) is inclined and its two ends are respectively rotatably and / or detachably connected to the horizontal rod (111) and the first vertical rod (112).

3. The nuclear power plant exciter maintenance shed according to claim 2, characterized in that: The lower keel (12) comprises at least two second vertical rods (121) and at least one second connecting rod (122), wherein the at least two second vertical rods (121) are arranged in parallel and vertically, and the second connecting rod (122) is arranged horizontally and has two ends respectively connected to two adjacent second vertical rods (121).

4. The nuclear power plant exciter maintenance shed according to claim 2, characterized in that: The other ends of the horizontal rods (111) of the two keel groups are detachably connected via a first connecting assembly (13), and a first assembly hole is provided on the other ends of the horizontal rods (111); The first connecting component (13) comprises a connecting plate (131), a first connecting hook (132) and a first rotating member (133); one end of the connecting plate (131) is detachably connected to the other end of the horizontal rod (111) of one of the keel groups, and the other end of the connecting plate (131) is formed with a second assembly hole corresponding to the first assembly hole; the first connecting hook (132) is detachably inserted into the first assembly hole and the second assembly hole of the horizontal rod (111) of the other keel group, and one end is provided with a bending portion, and the other end is detachably connected to the first rotating member (133).

5. The nuclear power plant exciter maintenance shed according to claim 3, characterized in that: The upper keel (11) further comprises at least one third connecting rod (115), wherein the third connecting rod (115) is horizontally arranged and respectively connects the other ends of at least two adjacent first vertical rods (112); The lower keel (12) further comprises at least one fourth connecting rod (123), wherein the fourth connecting rod (123) is horizontally arranged and respectively connects one end of at least two adjacent second vertical rods (121); At least one third assembly hole is formed on the third connecting rod (115), and at least one fourth assembly hole corresponding to the third assembly hole is formed on the fourth connecting rod (123); The third connecting rod (115) and the fourth connecting rod (123) are detachably connected via a second connecting assembly (14). The second connecting assembly (14) comprises a second connecting hook and a second rotating member. The second connecting hook is detachably inserted into the third assembly hole and the fourth assembly hole, and one end of the second connecting hook is provided with a bending portion, and the other end is detachably connected to the second rotating member.

6. The nuclear power plant exciter maintenance shed according to claim 2, characterized in that: Each keel group comprises at least two upper keels (11), and two adjacent upper keels (11) in the same keel group are rotatably connected via at least one hinge structure.

7. The nuclear power plant exciter maintenance shed according to claim 6, characterized in that: Each keel group comprises at least two lower keels (12), and two adjacent lower keels (12) in the same keel group are rotatably connected via at least one hinge structure.

8. The nuclear power plant exciter maintenance shed according to claim 2, characterized in that: The horizontal rod (111) and the first vertical rod (112) are rotatably connected via a rotating connecting member (116); the rotating connecting member (116) is L-shaped, one end of which is fixed to one end of the first vertical rod (112), and the other end is rotatably connected to one end of the horizontal rod (111).

9. The nuclear power plant exciter maintenance shed according to claim 1, characterized in that: The isolation cover (20) comprises a cover body (21) which is covered on the frame (10), and at least one transparent observation window (211) is provided on the cover body (21).

10. The nuclear power plant exciter maintenance shed according to claim 1, characterized in that: The isolation cover (20) comprises a cover body (21) which is covered on the frame (10) and at least one access door, the cover body (21) being formed with at least one entrance and exit (212), and the entrance and exit door being detachably arranged on the cover body (21) to cover the entrance and exit (212).

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