Horizontal moving cable bridge and integrated reactor top assembly

Abstract

The invention provides a horizontal moving cable bridge and an integrated reactor top assembly, the horizontal moving cable bridge is installed on an operation platform of a reactor building, the horizontal moving cable bridge comprises a driving base and a main body, and the driving base is in sliding fit with a guide rail arranged on the operation platform; the main body is arranged above the driving base, and at least one cable tray is arranged on the main body; when the reactor is in a running state, the main body is driven by the driving base to move to the side close to the shroud assembly, so that a cable on the cable tray is connected with a second connector of the shroud assembly through a first connector; when the reactor shuts down and refuels, the first connector of the cable on the cable tray is disconnected from the second connector of the shroud assembly, and the main body is driven by the driving base to move to the side away from the shroud assembly. According to the horizontally-moving cable bridge, the space above the top cover of the reactor pressure vessel is opened, interference between the integral bolt stretcher and the cable bridge when the integral bolt stretcher enters a reactor is avoided, and favorable conditions are provided for in-place of the integral bolt stretcher.

Description

Technical Field

[0001] The invention relates to the technical field of integrated stack top assembly design, and in particular to a horizontally movable cable bridge and an integrated stack top assembly. Background Art

[0002] The integrated stack top assembly is installed above the reactor pressure vessel top cover and integrates the cable tray function to support and lay the stack top cables.

[0003] Currently, newly built and in-service integrated stack top assemblies mainly use flip-type cable trays. One end of the cable tray is supported on the integrated stack top assembly, and the other end is supported on the refueling pool operating platform and connected to the cable connection plate on the platform side.

[0004] When the reactor is operating normally, the cable tray is placed flat on the operating platform and connected to the cable connection plate to realize power supply and signal transmission of the reactor top equipment. When the reactor is shut down for refueling, the cable tray is lifted and turned over and supported on the integrated reactor top assembly to facilitate the lifting, transfer and storage of the integrated reactor top assembly.

[0005] However, due to the large number of cables on the top of the reactor, the cable tray structure is large in size, occupying more space on the top of the reactor, which has an adverse impact on the design, manufacturing and maintenance of the integrated top assembly, as well as the application of the overall bolt tensioner.

[0006] Based on this, the inventor of the present application proposes a horizontally movable cable tray and an integrated stack top assembly in order to solve the above technical problems. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the large size of the cable tray is not conducive to the design of the integrated top stack assembly, and to provide a horizontally movable cable tray and an integrated top stack assembly.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] The present invention provides a horizontally movable cable tray installed on an operating platform of a reactor building, which is characterized by comprising:

[0010] A driving base, slidably matched with a guide rail provided on the operating platform;

[0011] The main body is arranged above the driving base, and at least one cable tray is arranged on the main body; wherein,

[0012] When the reactor is in operation, the main body is driven by the driving base to move close to the side of the shroud assembly, so that the cables on the cable tray are connected to the second connector of the shroud assembly through the first connector;

[0013] When the reactor is shut down for refueling, the first connector of the cable on the cable tray is disconnected from the second connector of the shroud assembly, and the main body is moved to the side away from the shroud assembly under the drive base.

[0014] According to one embodiment of the present invention, the number of the guide rails is two, and they are disposed on opposite sides of the circumferential tube assembly.

[0015] According to one embodiment of the present invention, the driving base is an electric roller mechanism, and the bottom of the electric roller mechanism is in sliding cooperation with the guide rail.

[0016] According to one embodiment of the present invention, the driving base and the guide rail are matched through a gear rack transmission.

[0017] According to one embodiment of the present invention, there are multiple cable trays, and the multiple cable trays are arranged at intervals to physically isolate the cables;

[0018] Different types of cables are separately arranged in the cable tray, and the cables are connected with a cable drag chain.

[0019] According to an embodiment of the present invention, a support plate is provided on the top of the main body, the cable tray is located below the support plate, and the support plate is used to support an operator.

[0020] According to an embodiment of the present invention, the main body is arc-shaped on a side facing the shroud assembly, and the cable tray is arranged on a side of the main body close to the shroud assembly.

[0021] According to an embodiment of the present invention, a plurality of the cable trays are arranged at intervals along one arc-shaped end of the main body.

[0022] According to an embodiment of the present invention, each of the cable trays corresponds to a group of the first connectors, and the cables in each group of the first connectors are of the same type.

[0023] The present invention also provides an integrated stack top assembly, comprising the horizontally movable cable tray as described above.

[0024] The positive and progressive effects of the present invention are:

[0025] The horizontally movable cable bridge of the present invention adopts a horizontal movement mode. When the reactor is running, the cable bridge is close to the shroud assembly to realize the connection between the pile top cable and the shroud cable; when the reactor is stopped for refueling, the cable connector is disconnected, and the cable bridge is parked on the operating platform beside the refueling pool away from the shroud. The horizontally movable cable bridge opens up the space above the top cover of the reactor pressure vessel, avoids the interference of the cable bridge when the integral bolt tensioner is put into the reactor, and provides favorable conditions for the integral bolt tensioner to be put into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a schematic diagram of the arrangement of the horizontal movable cable bridge of the present invention when the reactor is in operation;

[0028] Figure 2 It is a schematic diagram of the arrangement of the horizontal movable cable bridge of the present invention when the stack is stopped for refueling;

[0029] Figure 3 A top view of the horizontally movable cable bridge of the present invention;

[0030] Figure 4 It is a schematic diagram of the arrangement of the cable tray in the main body of the present invention.

[0031] 1. Driving base;

[0032] 2. Operating platform; 21. Guide rail;

[0033] 3. Main body; 31. Cable tray; 32. First connector; 33. Support plate; 34. Cable drag chain;

[0034] 4. a shroud assembly; 41. a second connector;

[0035] 5. Horizontally movable cable tray. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] Please refer to Figures 1 to 4 The present invention provides a horizontally movable cable tray, which is installed on an operating platform 2 of a reactor building, and specifically includes a driving base 1 and a main body 3, wherein the driving base 1 is slidably matched with a guide rail 21 provided on the operating platform 2. The main body 3 is arranged above the driving base 1, and at least one cable tray 31 is provided on the main body 3.

[0039] When the reactor is in operation, the main body 3 is driven by the driving base 1 to move close to the side of the shroud assembly 4 so that the cables on the cable tray 31 are connected to the second connector 41 of the shroud assembly 4 through the first connector 32 .

[0040] When the reactor is shut down for refueling, the first connector 32 of the cable on the cable tray 31 is disconnected from the second connector 41 of the shroud assembly 4, and the main body 3 is moved to the side away from the shroud assembly 4 under the drive base 1, thereby avoiding the operating space of the integral bolt tensioner.

[0041] It can be seen that the cable tray is installed on the operating platform 2 and moves horizontally above the refueling pool, so that the cable tray is close to or away from the shroud assembly 4, and then connected to or disconnected from the cables in the shroud assembly 4.

[0042] Specifically, a guide rail 21 is provided on the operating platform 2, and the guide rail 21 extends above the refueling pool. The driving base 1 slides with the guide rail 21 to drive the main body 3 to approach or move away from the enclosure.

[0043] For example, you can first refer to Figure 1 and Figure 3 , Figure 1 The cable tray in the middle is moved to the side of the enclosure assembly 4, which also corresponds to Figure 3 That is, when the reactor is in operation, the main body 3 moves to the side of the shroud assembly 4 driven by the driving base 1, and at this time, the cables on the cable tray 31 can be connected to the second connector 41 of the shroud assembly 4 through the first connector 32 to achieve power and signal transmission.

[0044] Please refer to Figure 2 and Figure 3 , Figure 2 The cable tray in the middle is moved to the side away from the enclosure assembly 4, which also corresponds to Figure 3That is, when the reactor is shut down for refueling, the first connector 32 on the cable tray 31 is disconnected from the second connector 41 on the shroud assembly 4 and is driven away from the shroud assembly 4 by the driving base 1.

[0045] In this way, the horizontally movable cable tray can open the space above the top cover of the reactor pressure vessel when the reactor is shut down for refueling, avoiding interference between the cable tray and the integral bolt tensioner when it is inserted into the reactor, thus providing favorable conditions for the positioning of the integral bolt tensioner.

[0046] Moreover, the cable tray and the integrated stack top assembly are spatially separated, avoiding the eccentric load caused by the traditional flip-type cable tray during hoisting, which is beneficial to the hoisting and leveling of the integrated stack top assembly.

[0047] In one embodiment, reference Figure 3 There are two guide rails 21 , which are disposed on opposite sides of the surrounding tube assembly 4 .

[0048] That is, the two opposite sides of the bottom of the driving base 1 are respectively slidably matched with the guide rails 21, and the driving base 1 can be self-driven, or can be connected to a driving mechanism to drive it, both methods are acceptable and are not limited here.

[0049] Reference Figure 2 and Figure 3 In one embodiment, the driving base 1 is an electric roller mechanism, and the bottom of the electric roller mechanism is slidably matched with the guide rail 21. The electric roller mechanism may include two or four rollers that cooperate with the guide rail 21, and the number of rollers is not limited here. The driving method of the electric roller mechanism is also not limited here, for example, a built-in motor can be self-driven to complete the forward or backward movement of the main body 3.

[0050] That is, the main body is mounted on the electric roller mechanism and can slide along the guide rail 21 under the drive of the electric roller mechanism to approach or move away from the surrounding cylinder assembly 4.

[0051] In some other embodiments, the driving base 1 and the guide rail 21 are also coupled via a gear rack transmission.

[0052] For example, a gear or a rack is provided on the top of the guide rail 21, and a rack or a gear matching with the guide rail 21 is provided on the bottom of the driving base 1, so as to cooperate with each other to drive the main body 3 to move toward or away from the shroud assembly 4.

[0053] Please refer to Figure 2 and Figure 4 There are multiple cable trays 31 , and the multiple cable trays 31 are spaced apart to physically isolate the cables; different types of cables are separately arranged in the cable trays 31 , and the cables are connected with cable drag chains 34 .

[0054] All cables of the cable tray are arranged in the cable tray 31 and physically isolated according to strong current, weak point, 1E class cable and non-1E class cable. At the same time, by controlling the minimum bending radius of the cable drag chain 34, it is beneficial to cable bending and protection.

[0055] Please refer to Figure 3 A support plate 33 is provided on the top of the main body 3, and the cable tray 31 is located below the support plate 33, and the support plate 33 is used to support the operator.

[0056] When the reactor is in operation, the operator needs to connect the cables of the cable tray to the second connector 41 of the cables of the shroud assembly 4 through the first connector 32 , so a platform for supporting the operator needs to be provided on the main body 3 , which corresponds to the support plate 33 .

[0057] The support plate 33 and the main body 3 may be integrally provided or separately provided, for example, connected by welding, threaded connectors, etc., which is not limited here.

[0058] Please continue to refer to Figure 4 The main body 3 is arc-shaped toward the side of the shroud assembly 4, and the cable tray 31 is arranged on the side of the main body 3 close to the shroud assembly 4.

[0059] Correspondingly, the shroud assembly 4 opens toward one side of the cable tray, and the size of the opening corresponds to the size of the arc-shaped side of the main body 3, so that when the reactor is running, the main body 3 can be embedded in the opening and matched with the shroud assembly 4.

[0060] Because the barrel of the shroud assembly 4 is cylindrical, the shape of the main body 3 facing the shroud assembly 4 is arc-shaped. Figure 4 A semicircle is taken as an example to match the cylindrical surrounding tube component 4.

[0061] It can be seen that when the cylinder body of the surrounding cylinder assembly 4 is square, the main body 3 can also be square on the side facing the surrounding cylinder assembly 4, and the specific structural dimensions are not limited here.

[0062] Specifically, a plurality of cable trays 31 are arranged at intervals along one arc-shaped end of the main body 3 .

[0063] Because there are many types of cables inside the enclosure assembly 4, multiple cable trays 31 are provided for easy arrangement to connect different types of cables. For example, strong current, weak current, 1E-level cables and non-1E-level cables are arranged in different cable trays 31 for physical isolation, and different connection partitions are also provided on the side of the enclosure assembly 4 to connect different types of cables.

[0064] Moreover, each cable tray 31 corresponds to a group of first connectors 32 , and the cables in each group of first connectors 32 are of the same type.

[0065] That is, the first connector 32 and the second connector 41 can be grouped or partitioned, respectively, thereby improving the efficiency and accuracy of the cable connection by the operator.

[0066] The present invention also provides an integrated stack top assembly, comprising the above-mentioned horizontal movable cable tray.

[0067] In summary, the horizontally movable cable tray and integrated stack top assembly proposed in the present invention have at least the following advantages:

[0068] 1. The cable tray moves closer to or farther away from the shroud assembly 4 in a translational manner. When the reactor is in operation, the cable tray moves closer to the shroud assembly 4 to achieve connection between the top cable and the second connector 41 of the cable connection plate on the shroud.

[0069] When the reactor is shut down for refueling, the connection between the first connector 32 and the second connector 41 is disconnected, and the cable tray is moved away from the side of the shroud assembly 4, providing favorable conditions for the integral bolt tensioning machine to be put in place.

[0070] Second, by moving the cable tray 5 horizontally, compared with the flip-type cable tray, the cable tray and the integrated stack top assembly are separated and coordinated in space, avoiding the eccentric load caused by the flip-type cable tray during hoisting, which is beneficial to the hoisting and leveling of the integrated stack top assembly.

[0071] 3. Cable trays 31 are used on the cable bridge to separate strong and weak current cables and Class 1E and non-Class 1E cables, thus achieving physical isolation.

[0072] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0073] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0074] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A horizontally movable cable tray, installed on the operating platform of a reactor building, characterized in that: include: A driving base, slidably matched with a guide rail provided on the operating platform; The main body is arranged above the driving base, and at least one cable tray is arranged on the main body; wherein, When the reactor is in operation, the main body is driven by the driving base to move close to the side of the shroud assembly, so that the cables on the cable tray are connected to the second connector of the shroud assembly through the first connector; When the reactor is shut down for refueling, the first connector of the cable on the cable tray is disconnected from the second connector of the shroud assembly, and the main body is moved to the side away from the shroud assembly under the drive base.

2. The horizontally movable cable tray according to claim 1, characterized in that: The number of the guide rails is two, and they are arranged on two opposite sides of the surrounding tube assembly.

3. The horizontally movable cable tray according to claim 1, characterized in that: The driving base is an electric roller mechanism, and the bottom of the electric roller mechanism is slidably matched with the guide rail.

4. The horizontally movable cable tray according to claim 1, characterized in that: The driving base and the guide rail are matched through gear rack transmission.

5. The horizontally movable cable tray according to claim 1, characterized in that: There are multiple cable trays, and the multiple cable trays are spaced apart to physically isolate the cables; Different types of cables are separately arranged in the cable tray, and the cables are connected with cable drag chains.

6. The horizontally movable cable tray according to claim 1, characterized in that: The main body has a support plate on the top, the cable tray is located below the support plate, and the support plate is used to support an operator.

7. The horizontally movable cable tray according to claim 1, characterized in that: The main body is arc-shaped on one side facing the shroud assembly, and the cable tray is arranged on one side of the main body close to the shroud assembly.

8. The horizontally movable cable tray according to claim 7, characterized in that: A plurality of cable trays are arranged at intervals along one arc-shaped end of the main body.

9. The horizontally movable cable tray according to claim 1, characterized in that: Each of the cable trays corresponds to a group of the first connectors, and the cables in each group of the first connectors are of the same type.

10. An integrated stack top assembly, characterized in that: It comprises a horizontally movable cable tray as described in any one of claims 1 to 9.

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